A construction foreman exerts 1300 Newtons of force trying to move a 1200-kg block of concrete. How many Joules of work does he perform?

What is the difference between a mechanical wave and an electromagnetic wave? O A mechanical wave travels through empty space, while an electromagnetic wave travels through matter.

A parachutist with a camera, both descending at a speed of 10.8 m/s, releases that camera at an altitude of 60 m. In this problem, take "up" to be positive. What is the velocity of the camera just before it hits the ground?

What kind of units as force measured by

The vertical displacement of the wave is measured from the

What alleles are always both expressed

How is the maunder minimum related to climate? a. changes in the earth's orbit correlate to changes in climate. b. unusually low sunspot activity correlates to unusually cold climatic events. c. the maunder minimum is unrelated to climate. d.

Why is thermal expansion an important consideration for engineering?

The stored energy an object has due to its position is potential energy. True or False?

Describe two changes of state that releases energy

A student is trying to determine if a solution is acidic or basic. She does not have any litmus paper. Which would she most likely use to get a reading on her solution? vinegar soap cabbage juice aquarium water