1. A car's speedometer reads 20 m/s after accelerating, from a standing start, for 25s. What

was the magnitude of its acceleration?

A physics department has a Foucault pendulum, a long-period pendulum suspended from the ceiling. The pendulum has an electric circuit that keeps it oscillating with a constant amplitude.

Carly places one end of a steel bar in a Bunsen flame and the other end in an ice cube. By what factor is the rate of heat flow changed when the bar's cross-sectional area is doubled? a. 2b. 1/2c. 4.0d. 1/4

A meteor is approaching Earth. Which statement about its motion is true? The meteor travels upward relative to Earth. The meteor accelerates. The meteor is out of Earth's gravitational force field. The meteor falls with a constant velocity.

What is the average atomic mass of an element?

Which of the following is the best example of kinetic energy? A book sitting on a bookshelf A golfer preparing to putt the ball A race car in position at the start line A satellite orbiting the Earth

In musical language, mezzo forte (mf) signals that the music's volume should be A. medium soft. B. soft. C. very loud. D. medium loud.

Suggest a form of renewable energy that could be used to power an electric ticket machine that only needs to work during daylight hours

Physical science unit 4 lesson 10

When light travels from air into water which is more dense than the air, it's speed is lower. So the light wave will ... A. bend towards the normal to the surface B.-always lies along the normal to the surface C. be unaffected D.

How will the current change in a series circuit if more resistors are added to it?