A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine?

Oxygen and other nonmetals are found in which area of the periodic table? on the left side on the right side in the bottom two rows in the middle section

Motion combines the concepts of position change (length) and time. Which of the following combination of units is used to describe the velocity of a moving object? length x time length/time Length/time^2 time/length

A moving company collects data about couches they move and displays the data in a table. The force along the ramp, the angle of the ramp, and the height the couch is raised to are shown.

Which of the following is not a concern regarding waste

The electric potentiol is constabt through a given region of space. is the electric field zero, or non zero in this region explain?

If you are asked to determine an objects speed, what information must you have? A: distance and period of time B: distance and direction C: period of time and direction D: distance and change in position

What is the kinetic energy of a 1150 kg sports car traveling down the road with a speed of 29 m/s?

3. A 2,000-kilogram railroad car moving at 5 m/sec to the east collides with a 6,000-kilogram railroad car moving at 3 m/sec to the west. If the cars couple together, what is their velocity after the collision?

A pendulum swings with amplitude. 02 m and period of 2 s what is its maximum speed

What bone cells respond to stress?