What is the most important reason to control the condition of a experiment

After the pendulum is dropped, determine the height at which the kinetic energy is equal to the potential energy.

A car starting from rest, travels 0.40 km in 11.0 s. What is the magnitude of its constant acceleration?

One plane took 3 hours to travel 240 miles going west in 2 hours to return home going east what was the average speed for the entire trip

An SUV is traveling at a speed of 18 m/s. If the SUV has a mass of 1,550 kg, what force must be applied to stop it in 8 seconds? A. - 4,030.7 N B. - 2.25 N C. - 2,700.0 N D. - 3,487.5 N

How many laws of energy are there

How much work is done when a 105 g tomato is lifted 19.2 m?

Suppose a body has a mass of 60 kilograms and a velocity of 2 meters per second upward. What is the linear momentum?

Reflection and abssorption prevent some

Why is it important to change only one experimental variable at a time in an experiment?

A 0.0663 kg ingot of metal is heated to 241◦C and then is dropped into a beaker containing 0.395 kg of water initially at 25◦C. If the final equilibrium state of the mixed system is 27.4 ◦C, find the specific heat of the metal.