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At a playground, a 22 kilogram boy plays on a slide that drops through a height of 2.1 meter. The boy starts at rest at the top of the slide. On the way down, the slide does anon conservative work of -376 Joule on the boy. Determine the boy speed at the bottom of the slide?
A jet plane begins a dive with an initial speed of 135 m/s and accelerates along its path at 20 m/s^2, find the acceleration of the plane at the bottom of the circular path
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. What angle does the velocity vector make with the horizontal
A motorcycle accelerates uniformly from rest and reaches a linear speed of 20.4 m/s in a time of 8.91 s. What is the magnitude of the angular acceleration of each tire
two uniformly charged insulating rods are bent in a semi circle shape with radius R=12cm. find direction of the elctric field at the center of the circle
An ideally efficient airplane engine provides work as heat flows from 1400 K burned gases to 260 K air
A large storage tank, open to the atmosphere at the top and filled with water, develops a small hole in its side at a point 15.6 m below the water level. Determine the speed at which the water leaves the hole
a tennis ball of mass mt is held just above a basketball of mass mb and radius rb. with their centers vertically
A mountain climber wears a goose down jacket 2.6cm thick with total surface area 0.95 m2. Determine the rate of heat flow by conduction through the jacket assuming it is dry
A standard 100 W (120 V) lightbulb contains a 7.40 cm-long tungsten filament. What is the diameter of the filament
At the instant the car begins to accelerate, a truck with a constant velocity of 21 m/s passes in the next lane. Explain how far will the car travel before it overtakes the truck?
A light, rigid rod of length l = 1.00 m joins two particles, with masses m1 = 4.00 kg and m2 = 3.00 kg, at its ends. The combination rotates in the xy plane about a pivot through the center of the rod (see figure below). Determine the angular momentu..
An 80 kg window cleaner sits 1.8 meters from the end of a 5 meter long scaffold that is supported at either end by a vertical wire. Suppose the scaffold is a uniform beam by a mass of 40 kg and find the tension in each wire.
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