What does a calorimeter directly measure?

change in temperature

kinetic energy

specific heat

radiation

Your friend comments that the bright star must give off much more light than the dimmer star. Is he necessarily right?

How does the effect of poison on lions and hyenas compare to the effect of poison on vultures

Which of the following items involve a wedge? Check all that apply. A. A chisel B. An axe C. A knife. D. A hairbrush

On a distance vs. time graph, the line of an object at rest is a a. curved line with a slope of zero b. flat line with a slope of zero c. jagged line with a negative slope d. curved line with a positive slope

You throw a ball straight up at 45 m/s. how many seconds elapse before it is traveling downward at 9 m/s?

A roller coaster has a mass of 500 kg. It drops from rest at the top of a hill that's 57 m tall. How fast is it going when it reaches the bottom? Acceleration due to gravity is g = 9.8 m/s2.

Two sinusoidal waves are moving through a medium in the positive x-direction, both having amplitudes of 7.00 cm, a wave number of k=3.00m-1, an angular frequency of ω=2.50s-1, and a period of 6.00 s, but one has a phase shift of an angle ϕ=π12rad.

For a vacation, you and your family fly east to west from Boston, Massachusetts, to Seattle, Washington. You notice that your flight back home to Boston is shorter than your flight to Seattle. Which phenomenon causes your flight home to be shorter?

You spy on an anchor on the bottom of a lake. What is the direction and amount of force the water exerts on it: a) zero b) up, equal to the weight of the anchor. c) up, less than the weight of the anchor d) down, equal to the weight of the anchor.

How are electromagnetic waves different from matter waves?