Which of these are physical changes in matter? Check all that apply. boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese

What do u think is the smallest piece that you could break sand into

Which term best describes the speed or rate at which glacial erosion takes place?

Who discovered that sunlight is made of all the colors of the rainbow? a. newton c. kepler b. galileo d. brahe

A student measures the mass of a 1.0 kg standard bar. He obtains measurements of 0.77 kg, 0.78 kg, and 0.79 kg. Which describes his measurements

The phrase, "We the People" is the first phrase of the constitution and arguably the best know

Two copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire?

A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player/'s hand.

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.