Causes the output work of a machine to be less than the input work

Which describes the properties reflection, absorption, and transmission when the light is shining on the oval end of a silver spoon? A. It reflects all lights, transmits all light, and absorbs some lights B.

What would happen to the railway lines in hot weather if there are no gaps in the track?

An iron anchor of density 7810.00 kg/m^3 appears 252 N lighter in water than in air. (a) What is the volume of the anchor? (b) How much does it weigh in air?

It takes 5.06 J of work to stretch a Hooke's-law spring 13.3 cm from its unstressed length. How much the extra work is required to stretch it an additional 13.4 cm? Answer in units of J. It takes 5.06 J of work to stretch a Hooke's-law spring 13.

What atomic proprty makes conductors and insulators different?

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?