An automobile use a 75,000 J of chemical energy from Gosselin produce 10,000 J of useful output energy

A. calculator it's efficiency

B. where does the lost energy go, that part of the input work that doesn't become useful work?

Assume that if the shear stress in steel exceeds about 4.00 108 n/m2, the steel ruptures. (a) determine the shearing force necessary to shear a steel bolt 1.15 cm in diameter. (b) determine the shearing force necessary to punch a 1.

Give an example of the follow components of culture in your life and explain the role it plays. 1. Technology

Im doing the BIg Bang for my project anyone know what it is, make it a ¨question¨ and an experiment.

Temperatures of four liquid substances are shown in the chart. A 2 column table with 4 rows. The first column is labeled substance with entries W, X, Y, Z. The second column is labeled temperature in degrees celcius with entries 40, 37, 19, 37.

Which would you expect to have the greatest amount of friction? a - a smooth surface on a smooth surface b-a smooth surface on a rough surface c-a rough surface and air d-a rough surface on a rough surface

The metric system is now known as the international system of units. a. T b. F

Technician A says that torque-to-yield head bolts are special bolts that are reusable. Technician A says that main bearing clearance can be calculated by knowing the inner diameter of the main bearing and the outer diameter of the main journal.

Which condition describes an object having terminal velocity? a. gravity > air resistance b. gravity < air resistance c. gravity = air resistance

All objects that have mass have gravity, and gravity pulls objects toward each other. A pencil has mass, and so does your hand. Yet a pencil drops to the floor when you let go of it. Why doesn't the pencil stick to your hand instead?

The radius of a car wheel is 3 inches. how far will the car travel in 10 revolutions of the wheel?