Choose all the answers that apply. Which of the following are chemical changes? rusting souring melting boiling freezing

Why do people have different centres of gravity?

If the torque required to loosen a nut that holds a wheel on a car has a magnitude of 55 n·m, what force must be exerted at the end of a 0.47 m lug wrench to loosen the nut when the angle is 48°?

A machine that changes only the direction of a force has a mechanical advantage of

Which type of tissue does a cell form

How does thermal energy heat a house? What devices and systems are involved?

The power of a machine measures A. its rate of doing work. B. its strength. C. the force it produces. D. the work it does.

the acceleration of gravity is 28 times on sun than earth. Imagine there is a space suit that let you stand on sun. Calculate the weight of 100 kg person on earth in newtons

A force of 20 n acts upon a 5 kg block, calculate acceleration of the object

What resultant force is needed to accelerate a train of mass 3.41000000 kg from rest to 15.0ms in exactly 20s

I to fall in love with someone or to at least get a boyfriend