PHYS 284 ALL FINAL EXAM Q&A
CONCORDIA UNIVERSITY
COMPREHENSIVE TEST BANK 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
⩥ Two objects attract each other gravitationally. If the distance between
their centers is cut in
half, the gravitational force. Answer: quadruples
⩥ The acceleration of gravity on the Moon is one-sixth what it is on
Earth. An object of mass
72 kg is taken to the Moon. What is its mass there?. Answer: 72 kg
⩥ An object moves with a constant speed of 30 m/s on a circular track of
radius 150 m. What
is the acceleration of the object?. Answer: 6.0 m/s2
⩥ How many revolutions per minute must a circular, rotating space
station of radius 1000 m
rotate to produce an artificial gravity of 9.80 m/s2?. Answer: 0.95 rpm
⩥ A 0.50-kg mass is attached to the end of a 1.0-m string. The system is
whirled in a
, horizontal circular path. If the maximum tension that the string can
withstand is 350 N. What is
the maximum speed of the mass if the string is not to break?. Answer: 26
m/s
⩥ A car is negotiating a flat curve of radius 50 m with a speed of 20 m/s.
The centripetal force
provided by friction is 1.2 × 10^4 N. What is the mass of the car?.
Answer: 1500 kg
⩥ A frictionless curve of radius 100 m, banked at an angle of 45°, may
be safely negotiated at
a speed of. Answer: 31 m/s.
⩥ Can work be done on a system if there is no motion?. Answer: No,
because of the way work is defined.
⩥ If you push twice as hard against a stationary brick wall, the amount
of work you do. Answer: remains constant at zero.
⩥ A 50-N object was lifted 2.0 m vertically and is being held there. How
much work is being
done in holding the box in this position?. Answer: 0 J
CONCORDIA UNIVERSITY
COMPREHENSIVE TEST BANK 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
⩥ Two objects attract each other gravitationally. If the distance between
their centers is cut in
half, the gravitational force. Answer: quadruples
⩥ The acceleration of gravity on the Moon is one-sixth what it is on
Earth. An object of mass
72 kg is taken to the Moon. What is its mass there?. Answer: 72 kg
⩥ An object moves with a constant speed of 30 m/s on a circular track of
radius 150 m. What
is the acceleration of the object?. Answer: 6.0 m/s2
⩥ How many revolutions per minute must a circular, rotating space
station of radius 1000 m
rotate to produce an artificial gravity of 9.80 m/s2?. Answer: 0.95 rpm
⩥ A 0.50-kg mass is attached to the end of a 1.0-m string. The system is
whirled in a
, horizontal circular path. If the maximum tension that the string can
withstand is 350 N. What is
the maximum speed of the mass if the string is not to break?. Answer: 26
m/s
⩥ A car is negotiating a flat curve of radius 50 m with a speed of 20 m/s.
The centripetal force
provided by friction is 1.2 × 10^4 N. What is the mass of the car?.
Answer: 1500 kg
⩥ A frictionless curve of radius 100 m, banked at an angle of 45°, may
be safely negotiated at
a speed of. Answer: 31 m/s.
⩥ Can work be done on a system if there is no motion?. Answer: No,
because of the way work is defined.
⩥ If you push twice as hard against a stationary brick wall, the amount
of work you do. Answer: remains constant at zero.
⩥ A 50-N object was lifted 2.0 m vertically and is being held there. How
much work is being
done in holding the box in this position?. Answer: 0 J
