Which one of the following is the equation for the first law of thermodynamics?

A. PV = nRT

B. PV/T

C. ΔU = Q - W

D. W = PΔV

An egg is dropped from a height of 20 m. The egg is in free fall the entire time it falls. What wilLthe speed of the egg be when it lands after fallinG for 2 seconds?

The analysis of ac circuits uses a rotating vector called a

If the humidity is 95% does that mean 95% of the air is water vapor?

If the width of the Moon in the sky is 32 arc-minute, and the width of the Sun in the sky is 30 arc-minute, what kind of solar eclipse would an earth-based observer witness, assuming the observer is perfectly aligned with the Sun and Moon?

A 16.0 Ω, 13.0 Ω, and 7.00 Ω resistor are connected in parallel to an emf source. A current of 6.00 A is in the 13.0 Ω resistor. Calculate the equivalent resistance of the circuit. Answer in units of Ω.

Which jet stream affects weather in south Africa

Parts of asteroids that reach Earth's surface are called A) comets B) exosolars C) meteorites D) craters

Industrialized countries have begun to look at sustainable forms of energy to use to replace more harmful methods, yet poorer countries are more likely to use sources that are cheaper and easier to access.

Why can't there be a number lower than absolute zero

How much force is needed to accelerate a 1750-kg car at a rate of 3 m/s2?