Which substance is most likely to heat up the fastest?

water (specific heat of 4.19 / g. C°)

o copper (specific heat of. 39 / g. C°)

o aluminum (specific heat of. 90 / g • C°)

o dry air (specific heat of 1.01 / g. cº)

In the periodic table the most reactive metals are found

An example of mechanical energy being converted into heat energy is A) the sun. B) a generator. C) a Snickers bar. D) rubbing your hands together.

Which one is having lesser ressistance. a 60w bulb or a 40w bulb?

The sound source of a ship's sonar system operates at a frequency of 18.0 kHzkHz. The speed of sound in water (assumed to be at a uniform 20∘C) ∘C) is 1482 m/sm/s. The ship is at rest in the water.

Sun looks slightly oval when it is at horizon. why?

Provide at least three examples of kinetic energy and potential energy. Then, identify where the energy is in each system you describe and whether or not it is being converted. If it is being converted, identify how and into what.

If the truck has a mass of 2,000 kilograms, what is its momentum? Express your answer in kg·m/sec.

What is the restoring force of a pendulum

About 1*1020J of energy was consumed in the United States in 2005. What is the ratio of the kinetic energy of the air that passes toward the equator each second and the energy consumed in the United States each second?

A box slides down a ramp. Which statement is true about the kinetic and potential energy of the box? Its potential energy increases and kinetic energy decreases. Its potential energy decreases and kinetic energy increases.