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A force of 20 N is applied at the edge of a wheel of radius 40 cm. Find the torque acting on the wheel?
If a person eats a popsicle of mass 0.045 kg and temperature -10 C, then how much energy does this person use
A snow mibile is pulling a large sled across a snow-covered field. The weight of the sled is 3560 N. If the coefficient of friction of the sled is 0.12,
Two plastic spheres, each carrying charge uniformly distributed throughout its interior, are initially placed in contact and then released, Find the maximum acceleration achieved by the sphere of mass 55.0g
The filament of a light bulb has a temperature of 2.8103°C and radiates 55 watts of power. The emissivityof the filament is 0.36. Find the surface area of the filament
a 120 g ball attached to a spring with spring constant 2.9 nm oscillates horizontally on a frictionless table. its
A cylinder with moment of inertia 18.8 kg m2 rotates with angular velocity 7.85 rad/s on a frictionless vertical axle. Show that energy is lost in this situation by calculating the ratio of the final to the initial kinetic energy
A 4.0 kg block rests at the edge of a disk with a mass of 5.0 kg and a radius of 30 cm. A 2 N force is applied to the edge of the disk. What is the angular acceleration of the disk and block
A block with mass m1=2.00 kg rests on a frictionless table. It is connected with a light string over a pulley to a hanging block of mass m2=4.00 kg. What is the angular speed of the pulley at this time
jack was exposed to fast neutrons he received a radiation dose of 180 rem on part of his hand affecting 24.0 g of
question a ball is thrown at a 60.0deg angle above the horizontal across level ground. it is released from a height of
A college professor keeps 0.25 L (0.00025 m^3) of hot coffee in a thick styrofoam container. at what rate is heat flowing out through the walls of the container
a bullet is fired into a large stationary absorber and comes to rest. temperature measurements of the absorber show
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