A Maglev train is powered by magnetism and electricity. A student wants to build a model of this train. Which test will best determine if the model train works?
Attach the train to an electric fan
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Connect the train to a solar panel
Connect the train to an electromagnet
Connect the train to a rocket
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Can you match these to the correct definition

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .

Which describes increasing the efficiency of energy resource