Alice and jim calculate that they must do 1,800 j of work to push a piano up a ramp. however, because they must also overcome friction they actually must do 2,400 j of work. what is the efficiency of the map

True or false. Motion is a change in direction. If false change direction to a word that makes it true

What does local acceleration mean?

Un pendul cu arc oscileaza cu frecventa de 0,25Hz. Cite oscilatii efectueaza acest pendul timp de 10s?

A vector isr⇀ = 78.0 m iˆ+278 m jˆ. What is the direction of this vector?

Are household electricity in a parallel or series circuit?

A brake warning lamp on the dash remains on whenever the ignition is on. If the wire to the pressure differential switch (usually a part of a combination valve or built into the master cylinder) is unplugged, the dash lamp goes out.

The host says during the video that her interests during middle school were?

Two hockey pucks with mass 0.1 kg slide across the ice and collide. Before the collision, puck 1 is going 13 m/s to the east and puck 2 is going 18 m/s to the west. After the collision, puck 1 is going 18 m/s to the west.

A snake accelerates from 2 m/s to 10 m/s in 4 seconds. What is the snakes acceleration? m/s2

What is the difference between speed and velocity