Questions Asked

Israel936:
Group Title
What is the velocity of an Earth satellite that is in a circular orbit with a radius of 7.5 × 107 meters measured from the center of the Ear…
 updated one year ago
 2 replies
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Israel936:
Group Title
Satellite A has an orbital radius 3.00 times greater than that of satellite B. Satellite B's orbital period around Earth is 120 minutes. Wha…
 updated one year ago
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Israel936:
Group Title
What provides the centripetal force needed to keep Earth in orbit?
 updated one year ago
 1 reply
 1 Medal

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 roller coaster car is on a track that forms a circular loop in the vertical plane. If the car is to just maintain contact with the track a…
 updated one year ago
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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:
Group Title
When a pendulum is at the center position, what is true of the kinetic and potential energy?
…
 updated one year ago
 2 replies
 2 Medals

Israel936:
Group Title
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
When a pendulum is swinging, the velocity is highest at which point?
A. at both ends of the swing and at the middle point.
B. at the highes…
 updated one year ago
 1 reply
 2 Medals

Israel936:
Group Title
Which amusement park ride utilizes periodic motion?
A. slide
B. Bumper cars
…
 updated one year ago
 2 replies
 1 Medal

Israel936:
Group Title
In Hooke's law, if a large force produces a small displacement, what does that say about the spring?
A. k is small
B. k is large
…
 updated one year ago
 1 reply
 2 Medals

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
What is the radius of a communications satellite’s orbital path that is in a uniform circular orbit around Earth and has a period of exactly…
 updated one year ago
 1 reply
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Israel936:
Group Title
A motor with a power of 7.0 × 104 watts lifts a loaded elevator to a height of 20.00 meters for 40 seconds. What is the force exerted by the…
 updated one year ago
 2 replies
 1 Medal

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
An 8.10 kilogram box of mass is kept at a height of 0.99 meters above ground level. What is the potential energy of the box?
(given g = 9.8…
 updated 8 months ago
 2 replies
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Israel936:
Group Title
At what height would the gravitational potential energy have a value of 73.7 joules for a 15 kilogram object? Note that acceleration due to …
 updated 8 months ago
 2 replies
 1 Medal

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
does anyone know about rational expressions?
5x+15/5x15
…
 updated one year ago
 1 reply
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Israel936:
Group Title
An object is falling from a height of 7.5 meters. At what height will its velocity be 7 meters/second?
A. 49 meters
…
 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
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