Mathew is simulating forces on a simple machine. He runs four tests as shown. Which test illustrates a balanced net force?

Which type of wire would have the least resistance? A. thick, short, hot B. thick, long, hot C. thin, short, hot D. thin, long, cold E. thick, short, cold

The period of an oscillator is 1 minute. What is the frequency and why?

Kenna has a mass of 30 kilograms. What's her weight in newtons? Assume that acceleration due to gravity is 9.8 N/kg.

What can be answered with science?

What is the speed of the ball relative to the net

A spring has a spring constant of 120 newtons per meter. Calculate the elastic potential energy stored in the spring when it is stretched 2.0 centimeters.

In pottery class, you throw a pot from a lump of wet clay. your pot's mass is 5.5 kg. after the pot is fired, it's mass is 4.9 kg. the density of wet clay is 1.60 g/cm3 and the density of fired clay is 1.36 g/cm3.

When you catch a baseball, what kind of work do you do, negative or positive? By catching the baseball, what do you change? Does the baseball gain or lose energy? What kind of energy?

A man finds that he has a mass of 100.6 kg. He goes on a diet, and several months later he finds that he has a mass of 96.4 kg. Express the mass 100.6 kg in scientific notation.

A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird?