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motikmotik
3 years ago
6

At what point does a moving pendulum have the greatest Kinetic energy

Physics
1 answer:
sattari [20]3 years ago
8 0
C is a correct answer. Because at the bottom, a moving pendulum have the fewest potential energy
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2. An example of a force applied against the direction of motion is: A) opening a door B)applying brakes suddenly to a moving ca
Blababa [14]

Answer:

Option(B),option(C) and Option(D) are the correct answer to the given question .

Explanation:

  • In the option(B) if we apply the force to stop the car. The motion and force of car is in the opposite direction .Suppose the person is moving the car to the straight and person immediately apply break the back wheel of the car is stop this means that  force and direction of motion is opposite that's why this is correct .
  • In the  option(C) the ball  and batsman hinting the ball is in the opposite direction .Suppose the ball is coming to the batsman to the right and it hits to the left its a opposite direction Therefore in this the force and direction of motion is opposite that's why this is correct .
  • In the option(D) if the person drawing water from a well there is always upward force is applied but there is always motion is there i.e downward force i,e mg.that's why  force and direction of motion is opposite that's why this is correct .
  • In the option(A) the force of opening the door of force and the motion is in the same direction therefore it is not the against the direction of motion that's why this option is incorrect .
8 0
4 years ago
An uncovered pot of soup is simmering on a stove, and there are water droplets on the wall above the back of the stove. what seq
Lera25 [3.4K]
The answer is vaporization, then condensation.

Here is a set of flash card that can help with this subject.
5 0
4 years ago
Read 2 more answers
A 6.00 kg object is lifted vertically through a distance of 5.25 m by a light string under a tension of 80.0 N. Find: (2 marks)
jeka57 [31]

Explanation:

It is given that,

Mas of the object, m = 6 kg

It is lifted through a distance, h = 5.25 m

Tension in the string, T = 80 N

(a) By considering the free body diagram of the object, the forces can be equated as :

T-mg=ma

a=\dfrac{T-mg}{m}

a=\dfrac{80-6\times 9.8}{6}

a=3.33\ m/s^2

Work done by tension, W_t=F\times h

W_t=80\times 5.25

W_t=420\ J

(b) Work done by gravity, W_g=mgh

W_g=6\times 9.8\times 5.25

W_g=308.7\ J

(c) Let v is the final speed of the object and u = 0

v=\sqrt{2ah}

v=\sqrt{2\times 3.33\times 5.25}

v = 5.91 m/s

Hence, this is the required solution.

7 0
4 years ago
Why does the gravitational field strength increase with latitude
otez555 [7]
The second major reason for the difference in gravity at differentlatitudes is that the Earth's equatorial bulge (itself also caused by centrifugalforce from rotation) causes objects at the Equator to be farther from the planet's centre than objects at the poles.
4 0
3 years ago
A 1180kg car is moving at a speed of 85.5 km/h. Find the force needed to bring the car to rest in a distance of 300m
yarga [219]

Answer:

1110 N

Explanation:

First, find the acceleration.

Given:

Δx = 300 m

v₀ = 85.5 km/h = 23.75 m/s

v = 0 m/s

Find: a

v² = v₀² + 2aΔx

(0 m/s)² = (23.75 m/s)² + 2a (300 m)

a = -0.94 m/s²

Find the force:

F = ma

F = (1180 kg) (-0.94 m/s²)

F = -1110 N

The magnitude of the force is 1110 N.

3 0
3 years ago
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