A toy mouse has a mass of 4 kg and kinetic energy of 32 J. What is its speed? A. 6 m/s B. 3 m/s C. 5 m/s D. 4 m/s

Why do Na andCl readily combine to form a compond

Which of the following is an example of an electromagnetic wave? A. sunlight B. an earthquake C. the sound of kids playing D. butterflies flying through the air

During nuclear fission and fusion matter that seems to disappear is actually converted into

An 80-kgkg quarterback jumps straight up in the air right before throwing a 0.43-kgkg football horizontally at 15 m/sm/s. How fast will he be moving backward just after releasing the ball?

What is the equation for time when using a position-time graph? and What is the equation for displacement when using a velocity-time graph?

Which statement about magnetic poles is accurate? A) Same magnetic poles attract, while different magnetic poles repel. B) Same magnetic poles attract, while different magnetic poles attract.

Power is measured in: A) J/s B) J2/s C) s/J D) s2/J

The amount or the strength of force is called its

An airplane in flight has a pressure difference between the lower and upper wing surface; this provides an upward force that balances the weight of the plane.

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