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A toy rocket is launched vertically from ground level (y = 0.00 m), at time t = 0.00 s. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 87 m and acquired a velocity of 60 m/s. The rocket continues to rise in unpowered flight, reaches maximum height, and falls back to the ground with negligible air resistance. The speed of the rocket upon impact on the ground is closest to?
A playground merry-go-round has radius 3.00m and moment of inertia 2600kg m^2 about a vertical axle through its center, and it turns with negligible friction, How much work did the child do on the merry-go-round
A truck of mass 9312 kg moving at a speed of 68.7 mph has lost its brakes. How far along the incline (?x) does the truck travel before it stops
A uniform 2.15- kg spinning disk with a radius of 0.233 m is brought to rest by a brake-pad pressed against the side 0.149 m from the rotation axis. What frictional force was applied by the brake pad
A nonconducting spherical shell, with an inner radius of 4 cm and an outer radius of 6 cm, has charge spread nonuniformly through its volume between its inner and outer surfaces. The volume charge density ? is the charge per unit volume, with the ..
What is the net force exerted on the skier, assume his acceleration is constant.
A 1000-kg car traveling with an x component of velocity of +20 m/s collides head-on with a 1500-kg light truck traveling with an x component of velocity of -10 m/s. what are the magnitudes of the final speeds of the car and truck
The electron will follow a circular path with the magnetic forcing providing the centripetal acceleration. What is the radius of this circle?
A certain suction cup has an air pressure of 80000Pa inside the suction cup. The suction cup covers an area of 2cm2. What is the largest mass that the suction cup can hold before failing
a convex lens with a 5 cm radius is used to focus sunlight on a piece of paper to a spot 1 mm in diameter. if it takes
A circular lake 1.0 km in diameter is 10 m deep (see the figure (Figure 1). Solar energy is incident on the lake at an average rate of 200 W/m2. If the lake absorbs all this energy and does not exchange heat with its surroundings, how long will it ta..
A periodic force equal to f(t) = cos ψt + sin ψt is impressed on the system starting at t = 0. In the absence of a damping force, for what value of ψ will the system be in a state of pure resonance?
The ground state for a quantum Hall system on a torus by fractional filling factor can be classified by the Chern number, which is why the Hall conductance is quantized. Is there another method or classification one can utilize to distinguish states?
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