Can any one Explain how energy is conserved in a heat pump.

Resistors labeled 100 Ω have true resistances that are between 80 Ω and 120 Ω. Let X be the mass of a randomly chosen resistor. The probability density function a. What proportion of resistors have resistances less than 90 Ω? b.

A scientist hypothesizes that the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female.

Whats the origin of all stars? a) supernova b) dwarfs c) protostars d) nebulae

Which of the following accurately describe some aspect of gravitational waves? Select all that apply. (A) Gravitational waves come from funnel-shaped regions of the universe (B) Gravitational waves are predicted to travel through space at the speed

If R is the total resistance for a parallel circuit with two resistors of resistance r1 and r2, then. Find the resistance, r1, if the total resistance R is 20 ohms, and r2 is 75 ohms. Round your answer to the nearest ohm if necessary.

Lemonade powder is stirred into water until it dissolves. Which are true statements? Check all that apply. A. Lemonade is the solute. B. Water is the solvent. C. Lemonade is the solvent. D. Water is the solute.

Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. What force would the fire extinguisher have to produce to propel Nikolas if he wanted to accelerate at a rate of 1.

A set of data is collected from a simple circuit with a 20 resistor and is represented in the table

A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v. Assume that the magnitude of the acceleration due to gravity is g. a.

8. What happens to force when mass is increased?