Two opposite poles repel each other

Plutonium isotopes undergo decay, producing heat. Plutonium isotope 239 (Pu-239) has 1.9 watts per kilogram [W/kg] of decay heat. How much heat, in units of calories [cal], will 1.25 moles [mol] of Pu-239 release after decaying for three hours [h]

Ammonia at 20 C with a quality of 50% and a total mass of 2 kg is in a rigid tank with an outlet valve at the bottom. How much saturated liquid can be removed from the tank in an isothermal process until there remains no more liquid?

A solid circular steel shaft having an outside diameter of 2.00 in. is subjected to a pure torque of T = 8380 lb-in. The shear modulus of the steel is G = 12,000 ksi. Determine the magnitude of the angle of twist in a 5.00-ft length of shaft.

According to the zeroth law of thermodynamics, which of the following cannot occur? a) a room being heated by an air conditioner b) a temperature below the coldest item in an area c) a cooler full of ice chilling a soda sitting on top of it d)

Why do conditional statements always have only two outcomes?

Work done by a system during a process can be considered as a property of the system. a) True b) False

When the compression process is non-quasi-equilibrium, the molecules before the piston face cannot escape fast enough, forming a high-pressure region in front of the piston. It takes more work to move the piston against this high-pressure region.

hypothetical A-B alloy of composition 40 wt% B-60 wt% A at some temperature is found to consist of mass fractions of 0.66 and 0.34 for the α and β phases, respectively.

10. Which of these requires a wheel alignment after replacement? A. Struts B. Shocks C. Both

What is the definition of diameter pitch?