The factors that can change in an experiment are called?

Suppose you want to operate an ideal refrigerator with a cold temperature of - 10.0ºC, and you would like it to have a coefficient of performance of 7. 00. What is the hot reservoir temperature for such a refrigerator? (answer in ºC)

What is the upper range for the temperatures of stars

What common household substances can turn blue litmus paper red?

A solid cylinder with an unknown radius starts from rest at the top of a 12.0m long ramp inclined 20.3∘ above the horizontal. Calculate the cylinder's final velocity when it reaches the bottom of the ramp.

What is the relationship between the normal force and weight

suppose mario is meeting a friend at noon. if he leaves his house at 11:55 a. m., at what average speed does he have to travel to make it there on time? write you're answer in m/s.

You push a cart with mass 30 kg forward, giving it an acceleration of 5 m/s How much force did you apply?

An air-track cart with mass m1=0.28kg and initial speed v0=0.75m/s collides with and sticks to a second cart that is at rest initially. if the mass of the second cart is m2=0.43kg, how much kinetic energy is lost as a result of the collision?

Which of the following is a chemical equation that accurately represents what happens when a sulfur and oxygen are produced from sulfur trioxide? A. 2S + 3O2---> 2SO3 B. 2SO3--->2S+3O2 C. S + O2--->SO3 D. SO3---> S+O2

At a construction site a pipe wrench struck the ground with a speed of 31 m/s. (a) From what height was it inadvertently dropped? (b) How long was it falling?