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A 7.5-kilogram object moving at 20. meters per second strikes a 60.-kilogram object initially at rest on a horizontal, frictionless surface. The two objects stick together and move off at a speed of
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
The equivalent resistance of the circuit is
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
Which circuit diagram contains a lamp that will not have current passing through it until switch S is closed?
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
Which type of photon has the least amount of energy?
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
How is the electrostatic force between two positive charges affected as the charges are brought closer together?
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
An object is thrown vertically upward with an initial velocity of 9.81 meters per second. What is the maximum height reached by the object? Neglect friction.
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
Which statement best describes the energy conversion as the mass moves from position A to position B?
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
What is one difference between magnetic forces and gravitational forces?
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
radio
2.2 m/s
Some of mass M’s kinetic energy is converted to elastic potential energy.
1.6 ohms
The force of repulsion between them increases.
4.91 m
1
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