Answer:150Nm
Explanation:
Force=50.0N distance=3.00m
Work=force x distance
Work=50 x 3
Work=150Nm
1. What type of evidence shows that, indeed, "there is more to perception than meets the senses?
Perception involves more than just sensory input; it includes interpretation by the brain, as evidenced by the existence of optical illusions, philosophical arguments, and conditions like synesthesia which demonstrate complex brain functions involved in perceiving the world.
Explanation:Evidence for Perception Beyond SensesThe concept that there is more to perception than what our senses can detect is supported by a variety of evidence. It is important to realize that perception is a cognitive process that involves interpreting sensory information, rather than just receiving it passively. The phenomenon of illusions serves as evidence that perception can lead to misinterpretation of sensory inputs. For example, optical illusions often show that what we perceive does not always match the physical reality of what we are sensing, suggesting that our brain is involved in constructing our experiences of the world to a greater degree than we might assume.
Philosophers like Russell and Moore highlight that our beliefs about the world are mediated through and sometimes limited by our sensory experiences, which are subject to error due to limitations or malfunctions in our sense organs or interpretations by the brain. G.E. Moore’s argument about the evidence of a hand existing simply because we can perceive it without further proof is an example of direct realism and points to our reliance on perception for evidence of the external world, yet acknowledges that there is a degree of trust involved in the acceptance of sensory evidence. Furthermore, the concept of homeostasis and allostasis in relation to emotions and reason, shows that our state of mind and body can influence how we interpret sensory information.
Interestingly, the existence of phenomena like synesthesia, where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway, suggests that perception is not purely a direct function of the senses, but can involve more complex brain functions that combine different types of sensory data into unique perceptual experiences that are not directly linked to the external stimuli.
Compare a cup of hot coffee with the Pacific Ocean. Which statement about thermal energy and temperature is correct?
OA. Water in the Pacific Ocean has more thermal energy and a higher temperature.
OB. Water in the Pacific Ocean has less thermal energy and a lower temperature.
C. Water in the Pacific Ocean has less thermal energy and a higher temperature
OD. Water in the Pacific Ocean has more thermal energy and a lower temperature.
Answer:
D- Water in the Pacific Ocean has more thermal energy and a lower temperature.
Explanation:
The Pacific Ocean had much more quantity compared to a cup of hot coffee.
The cup of coffee has a higher temperature due to direct heating, although the Pacific Ocean has more thermal energy because of its great mass.
What is a conversion factor?
a derived unit with a new name
the graph of recorded data
the density of a substance
a ratio of equivalent units
Answer:
A ratio of equivalent units
Explanation:
A conversion factor is a ratio of equivalent units and depends on which units are to be converted.
For example we want to convert 275 [mm] to inches, so we have to find the right conversion factor to allow us to work that conversion.
275 [mm] = inches = ?
[tex]275 [mm] * \frac{1in}{25.4mm} = 10.82 [in][/tex]
In this case the ratio is 1/25.4 = 0.039 [in/mm]
What is a mechanical property that describes the extent to which solid materials can be plastically deformed without fracturing?
Answer:
Elasticity
Explanation:
The property of a body, by virtue of which it tends to regain its
original size and shape when the applied force is removed, is
known as elasticity and the deformation caused is known
as elastic deformation.
Ductility is the mechanical property that describes the extent to which solid materials can be plastically deformed without fracturing.
Explanation:The mechanical property that describes the extent to which solid materials can be plastically deformed without fracturing is ductility.
Ductility is the ability of a material to undergo significant plastic deformation under tensile stress without breaking. Ductile materials, such as metals, can be stretched into thin wires or shaped into various forms without fracturing.
For example, copper and aluminum are highly ductile metals that can be easily drawn into wires and used for electrical conductivity, while brittle materials like glass or ceramic lack ductility and break easily when subjected to stress.
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A student fires a cannonball horizontally with a speed of 39m/s from a height of
73m. Neglect drag.
What was the cannonball's initial horizontal speed?
What was the cannonball's initial vertical speed?
How long did the ball remain in the air?
How far from the base of the building will the ball land (measured along the
ground)?
Explanation:
The initial horizontal speed is 39 m/s, and the initial vertical speed is 0 m/s.
v₀ₓ = 39 m/s
v₀ᵧ = 0 m/s
In the y direction:
Δy = 73 m
v₀ᵧ = 0 m/s
aᵧ = 9.8 m/s²
Find: t
Δy = v₀ᵧ t + ½ aᵧt²
73 = 0 + ½ (9.8) t²
t = 3.9 s
In the x direction:
v₀ₓ = 39 m/s
aₓ = 0 m/s²
t = 3.9 s
Find: Δx
Δx = v₀ₓ t + ½ aₓt²
Δx = (39) (3.9) + 0
Δx = 150 m
The initial horizontal speed of the cannonball is 39 m/s, its initial vertical speed is 0 m/s, it remained in the air for approximately 3.86 seconds, and it landed about 150.3 meters from the base of the building.
Explanation:The cannonball's initial horizontal speed is the speed at which it was fired, which is 39 m/s. Since the cannonball was fired horizontally, its initial vertical speed is 0 m/s.
To find out how long the ball was in the air, we need to use the equation of motion. With the use of the formula for the time of flight for a vertically projected body (t = √(2h/g)), where h is the height from which the cannonball was dropped, and g is the acceleration due to gravity, which is 9.8 m/s², we get t = √(2*73/9.8) = 3.86 seconds.
Finally, to find the distance along the ground, we multiply the time in the air by the horizontal speed (because the horizontal velocity stays consistent in a vacuum), so we get 39 m/s * 3.86 seconds = 150.3 meters.
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How do you calculate acceleration
Answer: acceleration is equal to the change in velocity per unit time in seconds.
a= ∆v / t = vf - vi / t
Explanation: change in velocity or ∆v can be expressed as (vf - vi)
3) Coach Pope rolls marble off the table with a horizontal velocity of 7 m/s. The marble lands 15 m
away from the table. How high above the ground was the marble launched.
Answer:
h = 2.5m
Explanation:
How can hypotheses best be tested?
by asking questions
through experimentation
by forming an opinion
through technology
In a scientific investigation, hypotheses best are tested through experimentation because the result of the experiment confirms the validation of the theoretical hypothesis formed while framing the problem statement, therefore the correct answer is option B.
What is scientific investigation?Scientific investigation is the process of looking for answers by doing extensive research and finding the answers through experimental results.
The greatest way to test a hypothesis in scientific research is through an experiment since the outcome validates the theoretical hypothesis made while defining the issue statement.
Thus, the correct answer is option B.
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1) An eagle accelerates from 15 m/s to 22 m/s in 4 seconds. What is the eagle's average
acceleration?
2) A roller coaster picks up speed as it rolls down its first hill. Its initial speed is 4 m/s,
and 3 seconds later at the bottom its speed is 22 m/s. What is its average acceleration?
3) A car is said to go "zero to sixty in six point seven seconds (6.7 s)". 60 mph is equal to
26.8 m/s. What is its acceleration in m/s??
4) A car is moving at a speed of 35.8 m/s. What acceleration would it have if it took 2.0 s to
come to a complete stop?
5) A car traveling at 22.4 m/s skids to a stop in 2.55 s. Determine the acceleration of the car.
6) A plane has a takeoff speed of 88.3 m/s. It reached that speed in 30.8 s. Determine the
acceleration of the plane.
7) Rocket-powered sleds are used to test the human response to acceleration. If a rocket-
powered sled is accelerated to a speed of 444 m/s in 1.83 seconds, then what is the
acceleration of the sled?
1)The average acceleration of eagle is 1.75 m/s².
2) The average acceleration of roller coaster is 6 m/s².
3)Acceleration in m/s² is 4 m/s².
4) Acceleration required to stop the car is -17.9 m/s².
5) Acceleration required to stop the car is -8.78 m/s².
6) Acceleration of the plane is 2.87 m/s².
7)Acceleration of the sled is 243 m/s².
Answer:
Explanation:
1) Average acceleration is equal to the rate of change in velocity with respect to time. Here the final and initial velocities are given as 22 m/s and 15 m/s respectively and the time is given as 4 seconds.
So, average acceleration = (Final velocity-Initial velocity)/Time
Average acceleration = (22-15)/4= 1.75 m/s².
Thus, the average acceleration of eagle is 1.75 m/s²
2) Similarly we have to use the above formula for determining the average acceleration of the roller coaster. Here the initial velocity is 4 m/s and final velocity is 22 m/s and the time taken to reach this final speed is 3 seconds.
So, average acceleration = (Final velocity-Initial velocity)/Time
Average acceleration = (22-4)/3= 6 m/s².
Thus, the average acceleration of roller coaster is 6 m/s².
3) Acceleration = 26.8/6.7=4 m/s².
Acceleration in m/s² is 4 m/s².
4) Acceleration required to stop the car = -35.8/2=-17.9 m/s².
Acceleration required to stop the car is -17.9 m/s².
5) Acceleration of the car skidding to stop = (0-22.4)/2.55=-8.78 m/s².
Acceleration required to stop the car is -8.78 m/s².
6) Acceleration of the plane= 88.3/30.8=2.87 m/s².
Acceleration of the plane is 2.87 m/s².
7) Acceleration of the sled = 444/1.83=243 m/s².
Acceleration of the sled is 243 m/s².
The eagle's average acceleration is equal to 1.75 [tex]m/s^2[/tex].
Given the following data:
Initial velocity = 15 m/s.Final velocity = 22 m/s.Time = 4 seconds.What is an acceleration?An acceleration can be defined as the rate of change of the velocity of an object with respect to time. Also, it is usually measured in meter per seconds square.
Mathematically, acceleration is given by this formula:
[tex]a = \frac{V\;-\;U}{t}[/tex]
Where:
V is the final velocity.U is the initial velocity.t is the time measured in seconds.Substituting the given parameters into the formula, we have;
[tex]a = \frac{22\;-\;15}{4}\\\\a=\frac{7}{4}[/tex]
Acceleration, a = 1.75 [tex]m/s^2[/tex].
Note: You should use the above formula to solve the other exercises.
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A bicyclist slow with a force of 3.5 x 10^2 N. if the bicyclist and bicycle have a total mass of 1.0 x 10^2 kg, what is the acceleration
Answer:
Acceleration = 3.5 [m/s^2]
Explanation:
We can solve this problem using Newton's second law, which states that the sum of forces on a body is equal to the product of the mass by the acceleration
F = 350 [N]
m = 100 [kg]
Using Newton's second law we have:
F = m*a
where:
F = force [N]
a = acceleration or desacceleration [m/s^2]
therefore:
a = 350/100
a = 3.5 [m/s^2]
Explain using words or visuals how minerals originally found in magma could travel
through the rock cycle and eventually end up in each of the three main classifications
of rocks. Describe what patterns must occur for each rock type to change into another.
Include any surface and sub-surface events that can be a contributing factor to the
rock cycle. SC.7.E.6.2
Answer:
Explanation:
Magma is a molten and semi-molten rock mixture found under the surface of the Earth. This mixture is usually made up of four parts: a hot liquid base, called the melt; minerals crystallized by the melt; solid rocks incorporated into the melt from the surrounding confines; and dissolved gases. When magma is ejected by a volcano or other vent, the material is called lava. Magma that has cooled into a solid is called igneous rock. Magma is extremely hot—between 700° and 1,300° Celsius (1,292° and 2,372° Fahrenheit). This heat makes magma a very fluid and dynamic substance, able to create new landforms and engage physical and chemical transformations in a variety of different environments. How Magma Forms Earth is divided into three general layers. The core is the superheated center, the mantle is the thick, middle layer, and the crust is the top layer on which we live. Magma originates in the lower part of the Earth’s crust and in the upper portion of the mantle.
Molted magma comes outside Earth's surface and formed igneous rocks. Due to natural decay, this igneous rocks forms sedimentary rocks and due to changes of temperature, pressure and chemical changes both of the rocks transforms into metamorphic rocks.
What is rock cycle?A fundamental idea in geology, the rock cycle illustrates how the three primary types of rocks—sedimentary, metamorphic, and igneous—change over the course of geologic time.
When a rock is pushed out of its equilibrium circumstances, it changes. For instance, an igneous rock like basalt may disintegrate and evaporate when exposed to air or melt when it is subducted beneath a continent.
Rocks do not stay in an equilibrium state; rather, they change as they interact with new environments because of the driving forces of the rock cycle, plate tectonics, and the water cycle.
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what’s 3 times 10 to the 8th power divided by 2.45 times 10 to the 9th power
0.12244898 is the value obtained when solving the given.
Explanation:
Given:
3 times 10 to the 8th power can be expressed in equation format as [tex]3 \times 10^{8}[/tex] (3 times symbolizes ‘multiplication’ then it is to the tenth power of 8)
2.45 times 10 to the 9th power can be expressed in equation format as [tex]2.45 \times 10^{9}[/tex] (2.45 times symbolizes ‘multiplication’, then it is to the tenth power of 9)
Asked to find the solution when dividing the above,
[tex]\frac{3 \times 10^{8}}{2.45 \times 10^{9}}=\frac{3}{2.45} \times 10^{8-9}[/tex]
When the tenth power of any value goes from denominator to numerator and vice-versa, presents in opposite sign to that it possess (like when ‘[tex]10^{9}[/tex] ' goes to numerator changed as ' [tex]10^{-9}[/tex] ').
Now by solving the above equation, we get
[tex]\frac{3}{2.45} \times 10^{8-9}=1.22 \times 10^{-1}=\frac{1.22}{10}=0.12244898[/tex]
A 100 sprinter starts from rest and final velocity of 18.8m/s what is the sprinter average acceleration if takes him 10.6 s to run the 100m race
Answer: a= 1.77 m/s²
Explanation: acceleration is expressed in:
a= vf - vi / t
a= 18.8 m/s - 0 m/s / 10.6 s
a= 1.77 m/s²
Convert 53.9 mi/h to m/s. 1 mi = 1609 m
Answer:
it would be 86725.1 m
Explanation:
please give brainly
Answer: 53.9ml/hr = 24.1m/s
Explanation:
Since 1ml = 1609m
And 1hr = 3600sec
53.9ml/hr = 53.9*1609/3600
= 24.1m/s
Three forces act on an object (at the origin of a rectangular coordinate system). Force one, F1, has a magnitude of 5.81 N and a direction Theta1 = 77.0 degrees, force two, F2, has a magnitude of 4.88 N and a direction of Theta2, = 156 degrees, and a force three F3, has a magnitude of 4.52 N and a direction of Theta 3 = 289 degrees. add these three vectors using the component method of vector addition. Call the resultant vector F and write the answer in component form (ie using unit vectors). then calculate the magnitude and direction of the vector F.
Answer:
F = -1.682 i + 3.374 j [N] ; F = 3.77[N]; α = 65.78°
Explanation:
In order to be able to understand this problem more easily, we will have to draw the vectors at the point of origin and in this way, with the help of the angles we will be able to find each of the components of the forces.
Looking at the attached image we can see each of the three forces, take each force and decompose them into the x & y axes.
F1 = 5.81 [N]
[tex]F_{1x} = 5.81*cos(77) = 1.306[N]\\F_{1y} = 5.81*sin(77) = 5.66[N][/tex]
F2= 4.88 [N]
[tex]F_{2x}= - 4.88*cos(180-156) =-4.458[N]\\F_{2y}= 4.88*sin(180-156) =1.984[N][/tex]
F3= 4.52 [N]
[tex]F_{3x} = 4.52*cos(360-289)=1.47[N]\\F_{3y} = - 4.52*sin(360-289) = -4.27[N][/tex]
Now we can sum each of the forces in the different components
[tex]F_{x} =F_{x1}+F_{x2}+F_{x3} = 1.306-4.458+1.47 = - 1.682[N]\\F_{y} =F_{y1}+F_{y2}+F_{y3} = 5.66+1.984-4.27 = 3.374[N][/tex]
F = -1.682 i + 3.374 j [N]
The total magnitude can be calculated by Pythagoras theorem
[tex]F = \sqrt{(1.682)^{2}+(3.374)^{2} } \\F = 3.77 [N][/tex]
The direction can be calculates as follows:
tan(α) = 3.374/1.682
α = 65.78°
This angle was calculated with respect to the horizontal
The ability of atoms to attract electrons in chemical bonds is called
________.
A. swarming
B. ionization energy
C. electronegativity
D. electronic shielding
Answer:
C) Electronegativity
Socrates believed that
Answer:
Socrates believed that one as a matter of fact must concentrate more on self development than on material things. He encouraged people to engage in developing friendships and love among themselves.
Answer:
B. (Mind and body are inseperable).
Explanation:
Gamma radiation:
А
)
causes you to turn green when angry
B
travels at the speed of light
c) is easily stopped by paper
D
is a particle
Answer:
Is a particle
Explanation:
Gamma Ray is a particle and can be stopped with a very thick concrete and iron mixture.
Answer: Is a particle
Explanation:
Took a quiz!
Radium-228 decays by alpha decay. Part of the nuclear equation is shown
below. Fill in the blank with a number.
Ra → He+7 Rn
Answer here
SUBMIT
₈₈ Ra²²⁸ → ₂He⁴ + ₈₆Rn²²⁴
Explanation:
Radium -228 is a radio-active element. It undergoes ∝- decay which means it emits a helium particle that is composed of 2 neutrons and 2 protons. Then the radium- 228 is converted into radon-224 which is again a radio-active element contains 86 protons and 138 neutrons by emitting an ∝-particle. The other isotopes of Ra²²³, Ra²²⁴ and Ra²²⁶ occurs naturally in the chain decay of the radio-active elements Uranium and Thorium. The ∝- decay of ₈₈ Ra²²⁸ is given as,
₈₈ Ra²²⁸ → ₂He⁴ + ₈₆Rn²²⁴
Before colliding , the momentum of Block A is +450 kg^ * m/s , and Block Bis -150 kg^ * m/s . After , Block A has a momentum +100 kg*m/s. What is the momentum of Block B afterwards ?
Answer:
Momentum of Block B after collision is 200 kg.m/s
Explanation:
Momentum of block A before collision is [tex]p_{1A} = 450kg.m/s[/tex]
Momentum of block B before collision is [tex]p_{1B} = -150kg.m/s[/tex]
Momentum of block A after collision is [tex]p_{2A} = 100kg.m/s[/tex]
According to conservation of momentum, total momentum before collision is equal to total momentum after collision
[tex]p_{1A}+p_{1B}=p_{2A}+p_{2B}\\450-150=100+p_{2B}\\p_{2B}=300-100\\p_{2B}=200 kg.m/s[/tex]
Momentum of Block B afterwards is 200 kg.m/s
Answer:
200
Explanation:
HELP PLEASEEEE
how much time would it take to stop a 2.75kg ball traveling at 3.90m/s if a constant force of -5.00N is applied to it?
Answer: 2.15secs
Explanation:
Force = mass*velocity/time
F = 5N
M = 2.75kg
V = 3.90m/s
5.00 = 2.75*3.90/time
Time = 10.725/5.0 = 2.15sec
It will take approximately 2.145 seconds to stop a 2.75 kg ball traveling at 3.90 m/s with a constant force of -5.00 N.
First, we need to calculate the initial momentum of the ball using the formula:
Momentum (p) = mass (m) × velocity (v)
Given:
mass (m) = 2.75 kg and initial velocity (v) = 3.90 m/sp (momentum) = 2.75 kg × 3.90 m/s
p (momentum) = 10.725 kg·m/s
Next, we use the principle of impulse to find the time needed to stop the ball. Impulse (J) is equal to the change in momentum, and it is also equal to the applied force (F) times the time (t):
Impulse (J) = Force (F) × time (t)Since the force applied is -5.00 N (acting against the ball's motion), we rearrange the equation to solve for time:
t = J / FThe change in momentum is equal to the initial momentum (since the final momentum will be 0 when the ball stops):
J = 10.725 kg·m/sThus,
[tex]t = \frac{10.725 kg \cdot m/s}{ 5.00 N }= 2.145 s[/tex]Therefore, it will take approximately 2.145 seconds to stop the ball.
Covert 60 mph to SI mks units
Answer:
26.8224
Explanation:
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how much energy (in joules) is needed to raise the average temperature of all the water in the tank by 1°C?
Answer:Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C.
Explanation:
object is placed 15cm in front of a plane mirror. If the mirror is moved further 5cm away from the object and the image is
Answer:
The image will most likely be 20cm in front the mirror since the mirror was placed further 5cm.
Find the sum of the vectors:11 km N ,11km E
The resultant vector is 11√2 km due north east.
Explanation:The vector is a type of quantity which has both magnitude and direction. This quantities when expressed needs to specify both magnitude and direction.
We need to calculate the magnitude and direction separately.
Here firstly for the magnitude,
The magnitudes are both 11 km and they are at right angles to each other.
So, the resultant magnitude = √(11² +11²) km
=11√2 km
Now for the direction, one vector is due north and the other is due east.
So the resultant vector is due north east.
So the final vector is 11√2 km due North-East.
Definition: This is what causes acceleration. Two forces acting opposite each other.
Example: Ben pushes on a heavy box. Friction opposes Ben's push. The box moves. Ben's pushing force is
greater than the friction force.
Answer:
unbalanced force
Explanation:
i just did it.
Two forces acting opposite each other then the acceleration is caused if one force is greater in magnitude than the other.
What is force?A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull.
A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton (N). Force is represented by the symbol F (formerly P).
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the
Acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.
Hence Two forces act opposite each other then the acceleration is caused if one force is greater in magnitude than the other.
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Find the equivalent resistance between points A and B shown in the figure(Figure 1). Consider R1 = 1.9 Ω , R2 = 2.5 Ω , R3 = 4.4 Ω , R4 = 3.5 Ω , R5 = 5.5 Ω , and R6 = 7.1 Ω .
The equivalent resistance between the point A and B is 0.95 ohm.
Explanation:
Solving for R3, R4, and R5 since they are in parallel formation. Their equivalent resistance could be
1 / R = (1 /R3) + (1 / R4) + (1 / R5)
= (1 / 4.4) + (1 / 3.5) + (1 / 5.5)
1 / R = 0.69
R = 1.43 ohm.
Next solving R6 and leg of this resistance which are in series connection,
r = R + R6
= 1.43 + 7.1)
r = 8.53 ohm.
Finally the three resistance R1, R2 and the leg resistance which are in parallel connection,
1 / r = (1 / 1.9) + (1 / 2.5) + (1 / 8.53)
= 1.04 ohm
Equivalent resistance R eq = 1 / 1.04 = 0.95 ohm.
The equivalent resistance of the circuit shown in the attachment is 0.958 Ω.
What is a resistor?The resistor can be defined as a device that has some electrical resistance and that is used in an electric circuit for protection, operation, or current control.
Given that there are 6 resistors connected in-between points A and B as shown in the attachment.
R1 = 1.9 Ω, R2 = 2.5 Ω, R3 = 4.4 Ω, R4 = 3.5 Ω, R5 = 5.5 Ω, and R6 = 7.1 Ω.
The resistors R3, R4, and R5 are in parallel connections. Let's consider that R' is the equivalent resistor of this parallel connection, then,
[tex]\dfrac {1}{R'} =\dfrac {1}{R_3} + \dfrac {1}{R_4}+\dfrac {1}{R_5}[/tex]
[tex]\dfrac {1}{R'}= \dfrac {1}{4.4}+ \dfrac {1}{3.5}+\dfrac {1}{5.5}[/tex]
[tex]\dfrac {1}{R'}= 0.69[/tex]
[tex]R' = 1.45[/tex]
The equivalent resistor is in series connection with R6. Hence, the equivalent resistance R'' is given below.
[tex]R'' = R' + R_6[/tex]
[tex]R'' = 1.45 + 7.1[/tex]
[tex]R'' = 8.55[/tex]
Now the resistors R1, R2, and R'' are in parallel connection, so the equivalent resistor R is given as,
[tex]\dfrac {1}{R} = \dfrac {1}{R_1} + \dfrac {1}{R_2} + \dfrac {1}{R''}[/tex]
[tex]\dfrac {1}{R} = \dfrac {1}{1.9} +\dfrac {1}{2.5} +\dfrac {1}{8.55}[/tex]
[tex]\dfrac {1}{R} = 1.043[/tex]
[tex]R = 0.958[/tex]
Hence we can conclude that the equivalent resistance of the circuit shown in the attachment is 0.958 Ω.
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prove: st = ut+½ at²
Explanation:
Let the distance covered by the body be s, initial and final velocities be u and v respectively and time taken be t.
[tex] \therefore Average\: velocity = \frac{u+v}{2} \\\\ Now, \:we \:know\: that\\\\ Distance \:covered\\ = Average\: velocity \times time\\\\ \therefore s= \frac{(u+v) }{2} \times t..... (1)\\\\[/tex]
By first equation of motion:
[tex] v = u + at[/tex]
Substituting the value of v in equation (1), we find:
[tex] s= \frac{(u+u + at)}{2} \times t\\\\ \therefore s= \frac{(2u + at)}{2} \times t\\\\ \therefore s= \frac{(2ut + at^2)}{2}\\\\ \therefore s= \frac{2ut} {2}+ \frac{at^2}{2}\\\\ \huge \orange {\boxed {\therefore s= ut+ \frac{1}{2}at^2}} \\\\[/tex]
Hence proved.
_C7H16+ _O2 produces _CO2 +H2O
C₇H₁₆+11O₂⇒7CO₂+8H₂O
Please help with this AP Physics 1 problem
Answer:
i) kinetic friction; ii) The friction force always acts in the opposite direction to the movement of the surface where friction exists.
Explanation:
Part i )
At that time the type of friction that exists is kinetic, as there is movement by the wheel. At the moment when the wheel remains in rest over the inclined plane, the friction force which would be used will be the static force.
Part ii)
The friction force always acts in the opposite direction to the movement of the surface where friction exists. It is not opposed to the sense of movement. In order for the wheel to rise on the inclined plane, it must turn to the right, that is to say in the clockwise direction, therefore the friction force must go in the opposite direction to the rotation of the wheel, that is to say, go in the opposite direction to the movement of the surface under friction effect, that is why it points in the same direction of displacement of the wheel.