What is an accurate definition of a heat engine?

A 261 kg motorcycle moves with a velocity of 4 m/s. What is its kinetic energy? Joules

The distance between the sun and earth is about 1.5X10^11 m. express this distance with an SI prefix and kilometers

A projectile is launched at 37 degrees to the horizontal with a speed of 200 m/s from position A. How many seconds elapse after launch of the projectile before it returns to its original elevation at C? a. 12 s b. 16 s c. 41 s d. 33 s e. 24 s

Wegener developed he hypothesis that Earth's landmasses had once been fused together, and hen slowly broke apart in a process called. a:continental drift b:subduction c:Pangea d:divergence

As you slide a heavy box across the floor, friction applies a force of - 60 N over a distance of 5 m. How much work is done by friction? A. - 55 J B. - 60 J C. - 300 J D. - 15 J

An object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s. find the (a) speed and (b) mass of the object.

with the wind a driver travels 300 mies in 5 hours. The return trip against the wind take the driver 6 hours. At what rate would thedriver travel without any wind What is the rate of thew ind?

How does sound travel from your vocal cords to someone's ear?

Select all the correct answers. Copper is listed in the 29th position in the periodic table. It's used for conducting electricity. What is copper? a metal a metalloid a nonmetal a noble gas an element

Neutron stars are smaller in size than less massive white dwarfs. a. True b. False