What are jet streams and where do they occur?

Three of the following simple machines are basically the same. The one that does NOT belong with the group is the__ A. lever C. wedge B. pulley D. wheel and axle

A car's bumper is designed to withstand a 4.0-km/h (1.1-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance.

2. Vehicle-braking distance is the distance your vehicle travels after you see a problem before you apply the brakes. A. true B. false

A particular type of automobile storage battery is characterized as "207 - Ampere - hour, 9.4 V." What total energy can the battery deliver? Answer in units of J.

What is the density of a brick with a volume of 0.0010 m3 and a mass of 1.9 kg?

Which part of the motor is responsible for reversing the flow of current?

In a generator, as the magnet spins, opposite poles of the magnet push the electrons in opposite directions. This back-and-forth movement of electrons is called what? A) revolutions per minute B) direct current C) alternating current.

A train travels at a speed of 30 miles/hour and traveled a distance of 240 miles. How long did it take the train to complete its journey?

What is the mass number of a potassium atom that has 20 neutrons

If an atom has a mass number of 23, which of the following is always true? The number of protons in the nucleus does not equal the number of neutrons. The atomic number is less than 11. The atom is not an isotope.