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Kipish [7]
4 years ago
11

When an astronaut in orbit experiences apparent weightlessness,

Physics
2 answers:
Leviafan [203]4 years ago
8 0
D. The net gravitational force on the astronaut is not balanced by a normal force
Elis [28]4 years ago
5 0

D. The net gravitational force on the astronaut is not balanced by a normal force

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A vertical spring with a spring constant of 420 N/m is mounted on the floor. From directly above the spring, which is unstrained
mixas84 [53]

Answer:

19.53 cm

Explanation:

The computation of the height is as follows:

Here we applied the conservation of the energy formula

As we know that

P.E of the block = P.E of the spring

 m g h = ( 1 ÷ 2) k x^2

where

m = 0.15

g = 9.81

k = 420

x = 0.037

So now put the values to the above formula

(0.15) (9.81) (h) = 1 ÷2 × 420 × (0.037)^2

1.4715 (h) = 0.28749

h = 0.19537 m

= 19.53 cm

3 0
3 years ago
The total potential and kinetic energy of the particles in an object is called
bekas [8.4K]
It can also be called the thermal kinetic energy. The internal energy of a system is the total thermal kinetic energy and thermal potential energy of all its atoms and molecules. The Kinetic Theory of Matter is explains the kinetic energy of particles in an object.
3 0
3 years ago
Read 2 more answers
What is the number of the strength of gravity on Earth?
klasskru [66]

Answer:

i don't know this answer

3 0
3 years ago
Two identical soccer balls are rolled toward each other. What will be true after they collide headon? (2 points)
elixir [45]

Complete Question:

Two identical soccer balls are rolled toward each other. What will be true after they collide headon?

Group of answer choices.

A. they will both stop rolling immediately after they collide head–on.

B. One ball will stop rolling and the other will roll backward at a slower speed.

C. They will both roll back at the same speed they had before the collision

D.They will both roll to the side at a faster speed after the collision

Answer:

C. They will both roll back at the same speed they had before the collision

Explanation:

Newton's Third Law of Motion which states that, for every action there is an equal but opposite reaction.

This ultimately implies that, in every interaction, there is a pair of forces acting on the two interacting objects.

In this scenario, two identical soccer balls are rolled toward each other. Thus, after they collide headon, they will both roll back at the same speed they had before the collision in accordance with Newton’s Third Law of Motion.

Additionally, The law of conservation of momentum states that the total linear momentum of any closed system would always remain constant with respect to time.

This ultimately implies that, if the two identical soccer balls exert forces only on each other, their total momentum is conserved

5 0
3 years ago
4. A truck with a mass of 6,500 Kg can exert a force of 29,250 N when stopping. What is the deceleration
Vitek1552 [10]
Deceleration = 29250 / 6500 = 4.5 m/s^2
7 0
4 years ago
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