Why is the work output of any real machine less than the work needed to operate it?

work is gained due to friction

work is lost due to friction

friction reduces the work input

According to the map, which of the following cities had both a military and a POW camp nearby?

Which causes a rainbow in the sky? a. Sunlight (white light) is refracted as it passes through different layers in the atmosphere. b. Sunlight (white light) refracts when it passes through droplets of water in the atmosphere. c.

The behavior of gas are dependent on all of the factors

What do you think will be different about cars in the future? Describe a change that is already being developed or that you think should be invented.

A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 82.4 mpa1m (75.0 ksi1in.).

The largest velocity reached by a falling object is its

Shows a 190 g hamster sitting on an 820 g wedge-shaped block. the block, in turn, rests on a spring scale. an extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down.

What will happen to the hydronium ion concentration and pH of the water if hydrochloric acid is added to water?

What is the main driver of the water cycle

What two types of evidence are used to classify orgianisms?