Which medium could NOT transmit a mechanical wave? A. air B. rope C. vacuum D. metal bar

A worker does 25 J of work lifting a bucket, then sets the bucket back down in the same place. What is the total net work done on the bucket? a. - 25 J c. 25 J b. 0 J d. 50 J

How much work in N*m is done when a 10.0-N force moves an object 2.5m? -0.25m*N -2.5m*N -25m*N -4.0m*N

Every winter i fly home to Michigan. It takes 5 hrs. What is my average speed?

A car enters a tunnel at 24 m/s and accelerates steadily at 2.0 m/s2. At what speed does it leave the tunnel, 8.0 seconds later?

On April 26, 1939, Great Britain did this in response to Hitler's aggressive moves? a. Removed its army from India c. Removed its navy from the Black Sea b. Re-introduced conscription d. Instituted an embargo of German exports

Velocity is: а - speed and direction. b - distance divided by time. c - always the same as speed. distance multiplied by time. d - distance multiplied by time

The gauge pressure in each of the four tires of an automobile is 230 kpa. if each tire has a "footprint" of 180 cm2 (area touching the ground), determine the mass of the car.

A bus travels 20 KM and 30 minutes what is average speed of the bus

What is the total number of atoms in the following formula? CaBr2

A lifeguard on a beach observes that waves have a speed of 7 m/s and a distance of 4.6m between wave crests. what is the period of the wave motion?