A simple machine used to raise a flag is a

Which of the following terms describes a machine that converts heat into work? A. Entropy pump B. Heat engine C. Heat pump D. Entropy engine

As concentration increases by a tenth, what happens to the pH?

How can u use physics in the real world

For humans, why is the characteristic of climate regularity important?

A fly has a mass of 1 gram at rest. how fast would it have to be traveling to have the mass of a large suv, which is about 3000 kilograms?

How do you best determine whether j/m2 and m*s2/N are equivalent units? Compare the written form of the units to see if they look the same. Notice that one unit contains joules and other newtons.

Which state must be supplied with the most energy to turn it into a gas

The heating element of an electric oven is designed to produce 5.0 kw of heat when connected to a 220 v source. what must be the resistance of the element?

Suppose all the grains in a sample of sand were exactly the same size. Could the sample still be a heterogeneous mixture?

A refrigeration system is to cool bread loaves with an average mass of 350 g from 30 to - 10°C at a rate of 1200 loaves per hour with refrigerated air at - 30°C. Taking the average specific and latent heats of bread to be 2.93 kJ/kg·°C and 109.