A force of 20 N is executed to raise a rock weighing 30 N. What is the actual mechanical advantage?

A closed circuit is formed by a solid conductor in contact with two parallel conducting rails that are closed on their left end, as shown.

How many moles of MgCl2 are there in 305 g of the compound? Answer and units

What is a chunk of rock or dust from space

As the current in a coil of wire increased, the magnetic field strength what?

How should you test a hypothesis?

Karen has a mass of 51.9 kg as she rides the up escalator at Woodley Park Station of the Washington D. C. Metro. Karen rode a distance of 63.1 m, the longest escalator in the free world. The acceleration of gravity is 9.8 m/s 2.

What is the current in a 160V circuit if the resistance is 2Ω?

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to drop? A. The molecules in the water spread apart. B. The molecules in the thermometer's liquid spread apart. C.

The amount of energy carried by a wave is proportional to the square of the wave's A. frequency B. amplitude C. wavelength D. period ... ?

The pressure at the bottom of a jug filled with water does not depend on