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

The orientation in space of the electron is described by which quantum number?

Alcohol use for can cause feel alcohol syndrome in the unborn fetus? true or false

When a vehicle is at high altitude (like a hill) it has huge potential energy. As the vehicle comes down the hill, all that energy is lost in the form of heat due to the application of brakes.

A 100-cm3 container has 4 g of ideal gas in it at 250 kPa. If the volume is changed to 50 cm3 and the temperature remains constant, what is its new density? 80 kg/m3 250 kg/m3 400 kg/m3 50 kg/m3

A force of 240.0 N causes an object to accelerate at 3.2 m/s2. What is the mass of the object?

How much of the electrical energy transformed by a common light bulb becomes heat energy?

What is the current for a 1200W microwave connected to 110V outlet.

If a negatively charged particle enters a region of uniform magnetic field which is perpendicular to the particle's velocity, will the kinetic energy of the particle increase, decrease, or stay the same?

The horizon moon appears to shrink in size if it is viewed through a narrow tube that eliminates the perception of distance cues. This best illustrates the importance of: a) convergence b) closer, farther away c) context effects d) none of thses

A bow is pulled back with 89.0N of force a distance of. 600m and shoots a 300kg arrow straight up. What is the work done on the arrow? 0.00J 53.4J 26.7J 16.0J