A 2.1-kg brick is placed gently upon a 2.9-kg cart originally moving with a speed of 26 cm/s. determine the post-collision speed of the combination of brick and cart.

Which are properties of both a gas and a plasma? Check all that apply. (1) can change shape to conform to a container (2) has a rigid shape that does not change easily (3) is made up of free-moving ions and electrons (4) is compressed more easily

How are mass and brightness related? Daddies!

In a single-slit diffraction experiment, the width of the slit through which light passes is increased. What happens to the width of the central bright fringe?

Conventional current- a. is the direction an electron would move in an electric field. b. is from + to - c. is from - to + d. both a and c

A satellite in space experiences direct sunlight and heats up. During periods of time when it receives no direct sunlight ... A. the satellite cools off by radiation. B. the satellite cools off by conduction. C.

Without the force of friction, people would not be able to walk.

A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. (a) find its original speed. (b) find its acceleration.

The matter that makes up a planet is distributed uniformly so that the planet has a fixed, uniform density.

3. If the potential difference is 120 volts and the resistance is 60 ohms, what is the current?

Which of galileo's observations most strongly supported a heliocentric cosmology? the phases of venus?