The earth has a magnetic field much like a bar magnet. Explain this statement.

An 80kg athlete jumps up 1.5 meters. with what velocity does he hit the ground?

An educated guess is based on past experience. How does a hypothesis express the educated guess? A. The educated guess is not part of the hypothesis. B. The educated guess is a conclusion of the hypothesis. C.

Which device is using a motor? A water heater creates heat energy from electric energy. A waterfall rotates a waterwheel to turn an axle A body massager uses electric energy to move back and forth.

Compare the momentum of a 6,300-kg elephant walking 0.11 m/s and a 50-kg dolphin swimming 10.4 m/s. your answer

A solid cylinder of mass 12.0 kgkg and radius 0.250 mm is free to rotate without friction around its central axis. If you do 75.

you can produce a sound by plucking a string or by blowing in a pipe. how are these two ways different?

There are four springs stretched by the same mass. Spring A: 25 cm Spring B: 10 cm Spring C: 100 cm Spring D: 1 cm Which spring is the strongest? A B C D

Consider a rough asphalt roadway with 17 cm curbs and one 3.75 m lane in each direction and a 1.45 m shoulder on each side. The road has a longitudinal slope of 0.75% and is crowned in the center with a transverse slope of 2.25%.

An example of an opinion would be which of the following? bob s burgers is the best show on television. cake is appropriate for many occasions. earth is 238,900 miles from the moon. none of these

Which is a concern about mining for uranium? -Heated water could be released into the environment. -Dust released in the air could be radioactive. -Supplies could become low during a drought.