2. If the efficiency of a device is 64 %, what is the amount of Energy lost / wasted by this device?

Explain

What are disadvantages with friction?

Where do objects becomes weightless and why?

What will happen to thermal condictivity of a substance if its thickness is doubled? Also give reason.

Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. To complete the chart below: Go back to the lesson on the historical models.

A radioactive isotope has a half-life of ten days. how much of a 100 gram sample will be left after 20 days

What is the mid-atlantic ridge? how many miles does it stretch?

A basketball player jumps straight up for a ball. To do this, he lowers his body 0.260 m and then accelerates through this distance by forcefully straightening his legs. This player leaves the floor with a vertical velocity sufficient to carry him 0.

Why does Mars have moons even when its mass is small?

During the forging process for a steel sword, the blacksmith places a hot iron blank into a cold bucket of water. Which of the following happens? A. The water molecules move faster. B. The steel molecules move faster. C.

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?