How do you know that a speedometer tells you the instantaneous speed of a car?

Which statements are correct regarding X-rays and sound waves? Check all that apply. A. X-rays are very high energy; sound waves are low energy B.

I'm thinking it's 2? You are asked to explain the Earth's magnetic field. Which is the best reply? 1. The Earth's magnetic south is similar to the north pole of a magnet. 2.

It is said that a fool and his money ate soon parted. Suppose we place the fool and gold brick in the middle of a frictionless, frozen lake (Galileo's ideal frozen lake). How can the fool rescue himself? Is he still a fool?

An atomic nucleus is composed of

Which instrument is launched into the atmosphere to collect pressure, temperature, humidity, wind speed, and other data? a. satellite b. barometer c. radiosonde d. hygrometer

On a cold winters da, y, If you left a drink setting outside, it could freeze. Explain why in a complete sentence Hint-Consider th kinetic theory of heat that explains that temperature is directly related to kinetic energy of atoms.

perature is 0◦F. How much taller is the building when the temperature is 107◦F? The linear expansion coefficient of steel is 1.1 * 10-5 (◦C) - 1.

A weightlifter lifted 800 Newtons to a height of 2.5 meters. What is the power output if this was done in 1.22 seconds?

What conditions must be present for a translational and rotational equilibrium of a rigid body?

In objects motion will not change is the force is acting on the object are blank