Which equation best expresses the first law of thermodynamics, assuming Q is heat, U is internal energy, and W is work?

A.ΔW = ΔQ + ΔU

B.ΔW = ΔU - ΔQ

C.ΔQ = ΔU+W

D.ΔU=Q - W

An alarm clock has a current of 4.5 amps and a resistance of 3.2 ohms. What is the voltage in the circuit?

Your pencil is 11 cm long. How long is it in millimeters?

What causes resistance in an electrical current

Determine whether or not the equation below is balanced. If it isn't balanced, write the balanced form. Also identify the reaction and product in equation.

According to the concept of length contraction, what happens to the length of an object as it approaches the speed of ligh and then slows down, eventually coming to a stop?

If the Coast Guard warns of a giant wave of water approaching the shore as a result of a major earthquake, they are warning of a. an aftershock. b. liquefaction. c. a tsunami. d. landslides.

What is the total number of atoms in the following formula? CaBr2 4 3 2 1

Object A with a mass of 500 kilograms hits stationary object B with a mass of 920 kilograms. If the collision is elastic, what happens after the collision? A) Both object A and object B move forward but with different velocities.

A young man walks daily through a gridded city section to visit his girlfriend, who lives m blocks East and nblocks North of where the young man resides.

Aliens from planet Moby have three alleles for skin color: R (red) W (white) and B (Blue). If all of these alleles are codominant and aliens on planet moby can only inherit two alleles for a gene, what are the six possible genotypes for skin color