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Consider an object which is rolling without slipping at constant speed on a level floor.
(a) Neglecting air resistance, what is the force of friction between the object and the rolling surface? Explain.
(b) Describe the frictional force in the case that air resistance is taken into account, in which case the ball is slowing down.
Assume a load resistor RLoad is placed in parallel with a 12 volt battery, calculate the internal resistance of the battery
question1a 1.00-kg beaker containing 2.09 kg of oil density 916 kgm3 rests on a scale. a 1.99-kg block of iron is
what is the energy now stored if the capacitor was disconnected from the potential source before the separation of the plates was changed? What is the energy now stored if the capacitor remained connected to the potential source while the separation ..
An athlete swings a 4.50-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 1.000 m at an angular speed of 0.540 rev/s. What is the tangential speed of the ball
A proton and an electron are both accelerated through a potential difference of 7200V. What is the velocity of each particle
Two cylindrical glass beads each of mass m = 20 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 8 cm. find the minimum charge needed to start the beads moving
An atomic nucleus initially movingat 420m/s emits an alpha particle in the direction of its velocity,and the remaining nucleus slows to 350 m/s. what speed does the alpha particle have when it is emitted
A photon with an initial wavelength of 1.380×10-11 m Compton scatters from an electron which is initially at rest. What is the energy of the outgoing photon
Water comes down the spillway of a dam from an initial vertical height of 170 m. What is the highest possible speed of the water at the end of the spillway
A boy is on a Ferris wheel, which takes him in a vertical circle of radius 5.5 m once every 21.0 s. What is the angular speed of the Ferris wheel
Vector A has components Ax =+4.0 units and Ay=+3.2 units, whereas vector B has components Bx=-2.5 units and By=+5.5 units
The magnetic flux through one face of a cube is +0.120Wb. a) Whatmust the total magnetic flux through the other five faces of thecube be? b) why didn't you need to know the dimensions of the cubein order to answer part (a)?
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