**Answer:**

The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.

**Explanation:**

Hope that helps

- neon signs

- fireworks

- rockets during the ascent

- meteors

- fireflies

- stars

**Answer:**

**Explanation:**

Given that,

The mass of a golf ball, m = 40 g = 0.04 kg

Its angular velocity,

The radius of the sphere is 2.5 cm or 0.025 m

**We need to find the magnitude of the angular momentum of the ball. It is given by the formula as follows:**

**Where I is moment of inertia**

For sphere,

**So, the magnitude of the angular momentum of the sphere is ****.**

Answer:

O The particles of the medium move more slowly and there are fewer chances to transfer energy.

Explanation:

Various media are made up of particles. These particles are in constant motion according to the kinetic theory of matter. Recall that temperature has been defined as the average kinetic energy of the particles in a medium. Hence, for any given medium, the velocity of particle motion increases or decreases linearly with temperature.

The speed of particles in any medium increases or decreases as the temperature of the medium increases or decreases as emphasised above. Hence, at low temperature, the velocity of waves set up by the motion of particles in a medium decreases and transfer the wave energy to neighbouring particles occurs more slowly than at high temperatures.

Using conservation of energy and momentum we get m1*v1=(m1+m2)*v2 so rearranging for v2 and plugging the given values in we get:

(200000kg*1.00m/s)/(21000kg)=.952m/s