How are magnetic fields created

The sun and stars appear to move due to the earths rotation true or false

During the construction of an office building, a hammer is accidentally dropped from a height of 784 ft. the distance (in feet) the hammer falls in t sec is s = 16t2. what is the hammer's velocity when it strikes the ground?

A bowling ball has a mass of 6 kg what happens to its momentum when its speed increases from 2m/s to 4m/s? A. The initial 12 kg*m/s and final is 24 B. The initial is 6 and the final 12 C. The initial is 12 and the final is 3 D.

You have a rock with a volume of 15 cm 3 and a mass of 45 grams. What is its density?

How many lines/cm should be present in a diffraction grating to produce the first bright fringe at an angle of 4o when yellow light of wavelength 580 nm passes through it?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.

What two factors determine how fast weathering occurs

A sound that's produced by a single wave at a constant frequency and with no overtones is called

Which of the following is ignored when determining the relative mass of atoms? protons nucleus electrons. neutrons