Which wave source can travel through the vacuum of space?

a. lasers

b. sound waves

c. pressure waves

d. high frequency whistles

a golf ball of mass 50g travels at 70 m/s hits a persons head (stopping in 0.05 second), what is the impact force

Which of the following accurately describe some aspect of gravitational waves? Select all that apply. (A) Gravitational waves come from funnel-shaped regions of the universe (B) Gravitational waves are predicted to travel through space at the speed

The zeroth law of thermodynamics describes the state where we can say what about the movement of heat between two substances?

What are three common clues that a chemical change has occurred

The role of learning in motivation is most obvious from the influence of

Muscle control is the ability to quickly change directions and make complex movements

According to the first law of thermodynamics, what could happen when heat is added to a system? The internal energy of the system decreases. The heat is turned into work done by the system. New energy is created within the system.

How does a parallel circuit differ from a series circuit? A. A parallel circuit has one path for electrons, but a series circuit has more than one path. B. A series circuit has one path for electrons, but a parallel circuit has more than one path. C.

When a potassium ion (k+) enters a gaurd cell it creates a solution of what?

If two plates diverge at a rate of 1.3 cm/year, how much farther apart will the plates be after 200 million years?