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A bike and rider have a total mass equal to 200 kilogram. The rider applies the brakes, causing the bike to accelerate at a rate of -2.5m/s^2. Calculate the net force on the bike?
A student sits on a rotatingstool holding two 2.0kg objects. When his arms are extendedhorizontally, the objects are 1.0 m from the axis of rotation, andhe rotates with an angular speed of 0.75 rad/s. Find the new angular speed of the student
An isolated container holding 30 g of hydrogen gas is at 25degrees C. If 1,000 calories were transferred to the gas, what would be the new temperature of the gas
A wave has an angular frequency of 110 rad/s and a wavelength of 1.80 m. Calculate the angular wave number and the speed of the wave.
If the heat engine used to harvest the energy from humans was operating at the theoretical maximum efficiency what temperature would the cold reservoir have to be make this energy source viable? (Assume the hot reservoir is that of the average ski..
A box of books weighing 327 N is shoved across the floor by a force of 471 N exerted downward at an angle of 35° below the horizontalIf μk between box and floor is 0.52, how long does it take to move the box 4.80 m starting from rest.
A long horizontal wire carries a current of 48 {rm A}. A second wire, made of 2.6 mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15 {rm cm} below. Examine the magnitude of the current in the lower wire.
Large meteorites are hardly slowed by Earth's atmosphere. how long does it take to reach the ground
A circular loop of wire with areal A lies in the xy-plane. As viewed along the z-axis looking in the -z direction toward the origin, Determine the vector magnet moment of the current loop
A car's outside rear-view mirror is convex, with focal length -1.5m . In the mirror you see a truck that's actually 4.0m tall and 10.3m behind you. What is its apparent height
At a carnival, you can try to ring a bell by striking a target with a 9 kg hammer. How fast must the hammer be moving when it strikes the target so that the bell just barely rings
A young boy with a broken leg is undergoing traction. What is the magnitude of the force exerted on the femur by the lower leg
find a horizontal force needed to pull a mass of 500 gram at constant velocity on a level surface and µk = 0.3?
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