A boy pushes on a box of mass 39 kg and it moves at an acceleration of 7.8m/s2. With what force does the boy push on the box?

A Carnot engine operates with a cold reservoir at a temperature of 474 K and a hot reservoir at a temperature of 628 K. What is the net entropy change (in J/K) as it goes through a complete cycle? slader

Tony drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took hours. When Tony drove home, there was no traffic and the trip only took hours.

instruments used to measure the following quantities Mass weight length time and density of a liquid

The fastest plane ever made, the Lockheed SR71, was able to travel 2200 miles per hour. Based on this speed, how far can it travel in 2 hours, 3 hours, and 5 hours?

Compressed gases aren't ideal. Let's consider a gas that's non-ideal only because the volume available to each of the N molecules is reduced because each other molecule occupies volume v. Instead of pV=NkT, we get: p (V-Nb) = NkT. Let b=1.

What do compressions look like in a sound wave?

45 g of vinegar and 60 g of baking soda were used in a chemical reaction. What is the total mass of the products?

The maximum oxygen uptake is known as the

Moving a distal part of arms or legs to follow a circular path is:

Whats the difference between population density and population size?