A mover pushes a 245 kg piano so that it accelerates uniformly from rest to 1.5 m/s in 5.00 s. What is the power delivered by the mover in this time interval? A 55W B 110W C 280W D 540 W

How does the law of conversation of energy apply to machines

8. A car travels at a constant velocity of 70 mph for one hour. By the end of the second hour, the car's velocity was 60 mph. At the end of the third hour, the car's velocity was 80 mph.

Which type of seismic wave does not travel through liquid? A. L waves B. P waves C. S waves D. Surface waves

A diamond has a density of 3.5 g/cm^3. What is the mass of a diamond with a volume of 0.3 cm^3? A) 11 g B) 1.2 g C) 1.05 g D) 0.086 g

Which statement correctly compares the speed of light? O O O O The speed of light through space is much greater than 3 x 108 m/s. The speed of light in glass is much greater than 3 x 108 m/s.

A starship passes Earth at 80% of the speed of light and sends a drone ship forward at half the speed of light rela - tive to itself. Show that the drone travels at 93% of the speed of light relative to Earth.

Rubies are used in electronics

Two kids are on a merry-go-round that is turning at a constant rate. ariel is near the outer edge, and bob is closer to the center. ariel has answer (smaller, the same, or greater angular speed?

Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.

Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?