Energy Conservation With Nonconservative Forces: As shown in the figure, a 4.0-kg block is moving at 5.0 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring, the spring is compressed a maximum distance of 0.68 m. What is the speed of the block when the spring is compressed to only one-half of the maximum distance?

Fill in the blank(s) with the appropriate word(s).


4.3 m/s

Physics & Space Science

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Which of the following is not a characteristic of superplasticity?

(a) Grains elongate in the direction of flow. (b) Temperatures are above half of the melting temperature. (c) The material is highly strain-rate sensitive. (d) A strain rate of approximately 10-3 s-1.

Physics & Space Science

Water is flowing through a pipe whose cross-sectional area at point A is larger than the cross-sectional area at point B. The reading on a pressure gauge connected to the pipe at point A will be _____________ the reading on a pressure gauge connected to the pipe at point B

a. the same as b. higher than c. lower than d. unrelated to

Physics & Space Science

According to the Big Bang theory, ordinary matter did not exist in the first microsecond after the beginning. All the matter in the universe was a sea of ________.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

In what phase of matter are the particles no longer moving?

A) solid B) liquid C) gas D) none of the above

Physics & Space Science