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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
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
The angle of incidence for a ray of light striking a plane mirror is 20º. What is the angle between the incident ray and the reflected ray?
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
How is the electrostatic force between two positive charges affected as the charges are brought closer together?
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
What is one difference between magnetic forces and gravitational forces?
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
Which circuit diagram contains a lamp that will not have current passing through it until switch S is closed?
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
The north pole of the compass needle will point toward
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
The equivalent resistance of the circuit is
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
Which statement best describes the energy conversion as the mass moves from position A to position B?
2.2 m/s
C
Magnetic forces may be attractive or repulsive, whereas gravitational forces are always attractive.
Some of mass M’s kinetic energy is converted to elastic potential energy.
1
1.6 ohms
The force of repulsion between them increases.
40º
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