Initially sliding with a speed of 2.2m/s, a 1.8kg block collides with a spring and compresses it 0.31m before coming to rest. What is the force constant of the spring?

All objects emit what radiation

A spring with a constant of 16 N/m has 98 J of energy stored in it when it is extended. How far is the spring extended?

Technician A says that the current flow through a rear-window defogger can be often self-regulating. Technician B says that as the temperature of the grid decreases, its resistance decreases, reducing current flow. Which technician is correct

Which of the following structure's primary role is to filter lymph? A. Lymph capillaries B. Lymphoid organs C. Lymph nodes D. Lacteals

In a reaction with water, a base will accept a proton from the water; therefore, the water must be acting as an acid. True or False

One reason that life as we know it is unlikely to exist on Venus is because A. the surface temperature is too high. B. the surface temperature is too low. C. the surface has too much ice covering it. D. there is no atmosphere.

The attraction between the Sun's gravity and Earth's gravity holds Earth in is?

Explain how a scientist could change a substance's pH from A. An acid to a neutral. B. A base to a neutral C. Create a salt

What could be put into the center section of this Venn diagram?

You are jumping on a trampoline and it occurs to you that energy is being transferred as you bounce. ( ... sounds like your usual thoughts, doesn't it?) You realize that sometimes you do work on the trampoline and sometimes it does work on you.