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A 5.5 kilogram bowling ball and a 7.5 kilogram bowling ball rest on a rack 0.54 meter apart. Find the force of gravity exerted on each of the balls by the other ball? Find at what separation is the force of gravity between the balls equal to 2.0 x 10-9 N?
The end of the cutting cord on a gas-powered weed cutter is 0.15 m in length. If the motor rotates at the rate of 20 rev/s, what is the tangential speed of the end of the cord
A beam of electrons is accelerated from rest through a potential difference of 0.110kV and then passes through a thin slit, How wide is the slit
An object's moment of inertia is 2.00kgm2 . Its angular velocity is increasing at the rate of 3.80, What is the total torque on the object
Determine the tension in an elevator cable if the 2000 kg elevator is accelerating upward with an acceleration of 1.8 m/s^2
If a horse starts from rest and accelerates at the maximum value until reaching its top speed, how far does it run, to the nearest 10 {\rm m}
You are at a rock concert, and the sound intensity reaches levels as high as 120 dB. Calculate the amplitude of this oscillating force
a helicopter lifts a 74 kg astronaut 18 m vertically from the ocean by means of a cable. the acceleration of the
A street lamp weight 164N. It is supported equally by two wires that form an angle of 129 degrees with each other. What is the tension of each of these wires.
A 200 kg object and a 500 kg object are separated by 1.2 m. A 150 kg object is placed half way between the two objects, What is the gravitational potential energy of the three masses
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. find the angular speed of the neutron star
An electron with speed v0 = 1.6 multiplied by 106m/s is traveling parallel to an electric field of magnitudeE = 7.7 multiplied by 103 N/C. How far will the electron travel before it stops
On a sunny morning in a ?eld, the atmospheric pressure is 10N/m and the temperature is 279 K. How much heat must be added to the air in the balloon to initiate the ?ight
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