A horizontal line above the time axis of a speed vs. time graph means an object is ___.

a) not moving

b) moving at a constant speed

c) moving at a constant velocity

3 The manufacturer of a machine said that it is 86 percent efficient. If you use 70 joules to run the machine (input work), how much output work will it produce?

A sound wave in air has a frequency of 286 hz and travels with a speed of 343 m/s. how far apart are the wave crests (compressions) ?

What are main causes by tornadoes

The angle that the Sun's rays strike a region of Earth determines the amount of heat transferred true or false

A person walks 25.0° North of East for 3.10 km. How far would she have to walk due north and due east to arrive at the same location?

How much power is reqired to lift a 10-n box 2 meters

Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. A 200 kg dolphin leaps straight up to a height of 7.8 m.

An example of renewable energy resource is ... A - uranium B - Wind C - natural gas

The power of a 1.5-volt alkaline cell varies with the number of hours of operation. A brand new D-cell can deliver as much as 13 A through a copper wire connected between terminals. Determine the power of a brand new D-cell.

You measure a watch's hour and minute hands to be 7.4 mm and 12.1 mm long, respectively. Part A In one day, by how much does the distance traveled by the tip of the minute hand exceed the distance traveled by the tip of the hour hand?