A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine?

Near the surface of Venus, its atmosphere has a pressure fv = 91 times the pressure of Earth's atmosphere, and a particle density of around rhov = 1.05 * 1027 m-3. What is the temperature of Venus' atmosphere (in C) near the surface? g

Will the April 29th 2020 astroid be the end of humanity as we know it?

Which material produces static charge when rubbed?

What causes the Coriolis effect?

What is the fundamental unit for measuring mass in the metric system?

One of the longer sides of a kite is 39 feet. one of the shorter sides is 25 feet. half the length of the shorter diagonal is 15 feet. what is the area of the kite?

As the width of an opening in a barrier increases, how will the amount of diffraction of the planar waves change as they pass through the opening? A. It will increase. B. It will decrease. C. It will remain the same.

Two forces whose resultant is 100N, are perpendicular to each other. if one of them makes an angle of 60° with the resultant, calculate it's magnitude Calculate the absolute pressure of an ocean depth of 1200atm.

So this is a very logical question but, where did any of us come from? Do note that I am an atheist and I do not believe in God. Why well if God was real then who were his paretns. You cannot tell me that there is just a God with no parents.

Which condition is a neuron in when the outside of the neuron has a net positive charge and the inside has a net negative charge?. Threshold. Action potential. Resting potential