The molecules of a substance become more closely packed and move more quickly.

What is happening to the substance?

The animal derives energy from its food to maintain its body temperature.

State the energy change that takes place

Assume that a 15-kg ball moving at 8 m/s strikes a wall perpendicularly and rebounds elastically at the same speed. What is the amount of impulse given to the wall?

What is the cause of farsightedness?

An alpha particle travels at a velocity of magnitude 760 m/s through a uniform magnetic field of magnitude 0.034 T. (An alpha particle has a charge of charge of 3.2 * 10-19 C and a mass 6.

A temperature of 273 K is the temperature at which water Question 7 options: A) boils. B) freezes. C) evaporates. D) is at its densest.

What is the speed of a 0.145kg baseball if it's kinetic energy is 109 j

What is the wavelength of an earthquake wave if it has a speed of 4 km/s and a frequency of 7 Hz?

Which of the following do not involve a direction? Check all that apply. A. Time B. Velocity C. Distance D. Acceleration

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.