A block and tackle pulley system of 6 pulley uses 300N to overcome 1200N. find efficiency

Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m3) of radius 82 km and height 5.0 km

A student pulls a box of books on a smooth horizontal floor with a force of 100 N in a direction of 37° above the horizontal. If the mass of the box and the books is 40.0 kg, what is the acceleration of the box?

When you arrive to the scene of an injury where the victim is unconscious, why should you not move them?

The 2-Mg car is being towed by a winch. If the winch exerts a force of T=100 (s+1) N on the cable, where s is the displacement of the car in meters, determine the speed of the car when s=10m, starting from rest. Neglect rolling resistance of the car.

Why do sound waves echo more in some locations than in others?

Lisa has three classes that each last 50 minutes qhat ia the total nuber of minutes of minutes of the three classe?

Which has a greater speed a heron hat travels 600m in 60 seconds or a duck that travels 60 m in 5 seconds? Explain

A machine shovel moves dirt at the rate of 1,100 pounds of dirt 1 foot in 1 second. How many horsepower is this?

Two descriptions about physical quantities are given below: Quantity A: It is a force. Quantity B: It changes when the object travels from Earth to Earth's moon. What quantities are these most likely describing? A.

How does the tilt of Earth's axis affect how the sun's rays strike Earth?