What gives you a frame of reference for your speed when you are riding a train

a. the wheels of the train

b. the sky overhead

c. the train tracks

d. the station

If two identical bowling balls are raised to the same height, one on Earth and the other on the moon, which has the larger potential energy relative to the surface of the bodies?

A Ping-Pong ball has a diameter of 1.99 cm and average density of 0.121 g/cm3. What force would be required to hold it completely submerged under water? The acceleration of gravity is 9.8 m/s 2. Answer in units of N.

The atoms that make up a star can be determined by A. the color B. the position of the star in its galaxy C. the stars emission spectrum D. The star corona

Hannah does an experiment. she has two colorless chemicals that she mixes together in a beaker. Which of the following indicates that a chemical change occurs when she mixes the two chemicals together? 1.

Blue light and yellow light combine to produce white light because a. they absorb each other s wavelengths. b. blue, yellow, and white are primary colors. c. they are complementary colors of light. d. they are both primary colors of light.

Which of these is a property of most nonmetals? Question 3 options: poor conductors of both heat and electricity reactive lustrous appearance good conductor of heat, but not electricity malleable when a solid

Not all energy sources derive their energy from the sun. Choose the three from the list below that derive their energy from sources other than the sun. chemical heat light geothermal nuclear tidal

Suppose your car is equipped with tire pressure monitoring system (TPMS) and the tire pressure is 34.0 psi on a 98F day in california. You decided to take a road trp to Alaska where the temperature drops to 20 F.

Which sound would be loudest? O A. a wave with an amplitude of 1.0 OB. a wave with an amplitude of 0.1 OC. a wave with an amplitude of 0.5 OD. a wave with an amplitude of O

How much work is done when a 4.0-newton box is carried horizontally a distance of 2.0 meters at a constant velocity?