An engine absorbs 2150 J as heat from a hot reservoir and gives off 750 J as heat to a cold reservoir during each cycle. What is the efficiency of the engine?

Without the wheels, a bicycle frame has a mass of 8.47 kg. each of the wheels can be roughly modeled as a uniform solid disk with a mass of 0.820 kg and a radius of 0.343 m. find the kinetic energy of the whole bicycle when it is moving forward at 3.

During an experiment, a toy car accelerates forward for a total time of 5 s. Which of the following procedures could a student use to determine the average net force exerted on the car during the 5 s that the car accelerates?

1. What shape is the Pencil's body? a. Square c. Circle b. Triangle d. Rectangle

What chemical weathering called oxidation causes

You arrive to science in 3 mins after your math class that is 900 meters away. How fast were you walking?

A thin hoop is hung on a wall, supported by a horizontal nail. The hoop's mass is M=2.0 kg and its radius is R=0.6 m.

Define Momentum in detail.

What is most likely the relationship between Mendel's rules of genetics and Darwin's idea of biological evolution? Mendel's genetics states laws that are now part of the theory of biological evolution.

A 282 kg motorcycle moves with the velocity of 4 m/s what is the kinetic energy

How much does an average straw bale weigh?