Answer:
yes for both.
Explanation:
according to Newton's first law an object in motion will stay in motion until acted on by an outside force and an object at rest will stay at rest until acted on by an outside force. this means that an object that is moving will stay moving in the direction that it's moving and at the same speed unless there's an outside force acting on it and it will keep in motion until there is an outside force acting on it.
With what you have here, there is no way to determine the volume. Do you have the density also?
Answer:
Place the convex lens on a 'V' stand. . ii) Light a candle and take it far away from the lens along the principal axis. iii) Adjust the screen on the other side of the lens to get a clear image on it. iv) Measure the distance between the 'V' stand and the screen which gives a rough idea of the focal length of the lens.
When heat travels between two objects that are touching,
it is moving by <em>conduction</em>.
Thank you for posting your question here at brainly. I hope the answer will help you. Below is the solution:
Make a momentum balance:
<span>m_e · v_e + m_n · v_n = (m_e + m_n) · v </span>
<span>where v is the speed of the two cars instant after the collision. </span>
<span>Because the cars have the same mass, this simplifies to </span>
<span>v_e + v_n = 2v </span>
<span>The square of the speed instant after collision is: </span>
<span>v² = 1/4·(v_e + v_n)² </span>