Postal worker on a bicycle travels at an average speed of 4m/s for 3 minutes. Work out how far she travelled.

Which best describes what is occurring when a door is almost closed and rays of light fan out from the small opening? absorption interference refraction diffraction

Calculate the angular velocity and linear velocity of both wheels assuming the larger wheel rotates at 120 revolutions per min (20RPM)

When finding the ideal mechanical advantage (IMA), the negative force not being included is ___.

How much work is done when a very large force is applied to an object but doe what is the work done on a 34-N weight if it is lifted up 1 km

What is the frequency of a wave if the speed is 24 m/s and the wave is 2 meters

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

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