Questions Answered

Israel936:
Group Title
What is the maximum velocity that a 0.3kilogram mass attached to a 0.75meter string can have if the mass is whirled around in a circular h…
 updated one year ago
 11 replies
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Israel936:
Group Title
What is the direction of the net force that acts on an object undergoing uniform circular motion?
 updated one year ago
 24 replies
 1 Medal

Israel936:
Group Title
A ball is whirled overhead at a velocity of 12 meters/second in a circular path whose radius is 2 meters. Select the value listed below that…
 updated one year ago
 1 reply
 1 Medal

Israel936:
Group Title
When a pendulum is at the center position, what is true of the kinetic and potential energy?
A. both kinetic energy and potential energy ar…
 updated one year ago
 4 replies
 2 Medals

Israel936:
Group Title
Assuming you are on Earth, where acceleration due to gravity is 9.81 meters/second^2, and you have a pendulum with a cord that is 0.65 meter…
 updated one year ago
 6 replies
 1 Medal

Israel936:
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Susan makes a simple pendulum by attaching a rock to a piece of string that is 24.6 centimeters long. Then she swings it back and forth. Wha…
 updated one year ago
 13 replies
 1 Medal

Israel936:
Group Title
What is the centripetal force of an object undergoing uniform circular motion when its radius is doubled and its speed remains constant?
 updated one year ago
 6 replies
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Israel936:
Group Title
The value of gravitational acceleration of a body on Earth is 9.8 meters/second2. The gravitational potential energy for a 1.00 kilogram obj…
 updated one year ago
 3 replies
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Israel936:
Group Title
The use of air bags in cars reduces the force of impact by a factor of 1/110 (The resulting force is only as great.) What can be said abou…
 updated one year ago
 4 replies
 2 Medals

Israel936:
Group Title
In a certain collision we want to increase the force while keeping the magnitude of impulse the same. What can be done to achieve this objec…
 updated one year ago
 4 replies
 2 Medals

Israel936:
Group Title
A car has a mass of 1.20 × 103 kilograms and a momentum of 2.00 × 104 kilogram meters/second. What is the velocity of the car?
 updated one year ago
 4 replies
 2 Medals

Israel936:
Group Title
Rita is riding a 7.0 kilogram bike at a velocity of 15 meters/second. Rita’s mass is 42 kilograms. What is her momentum?
A. 1.0 × 102 kil…
 updated one year ago
 3 replies
 1 Medal

Israel936:
Group Title
Which transformation of energy occurs in a hydroelectric power plant?
A. potential energy to chemical energy
B. chemical energy to potenti…
 updated one year ago
 2 replies
 1 Medal

Israel936:
Group Title
A 25 newton force applied on an object moves it 50 meters. The angle between the force and displacement is 40.0°. What is the value of work …
 updated one year ago
 4 replies
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Israel936:
Group Title
In which situation is maximum work considered to be done by a force?
 updated one year ago
 2 replies
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Israel936:
Group Title
Which of these physical quantities varies as an object changes
its velocity?
A. pressure
…
 updated one year ago
 17 replies
 2 Medals

Israel936:
Group Title
Identical cannonballs are fired with the same force, one each from four cannons having respective bore lengths of 1.0 meter, 2.0 meters, 2.5…
 updated one year ago
 14 replies
 1 Medal