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A turboprop producing 1000 kW drives a propeller operating at 85% propulsive efficiency. If the fuel flow to the engine is 0.07 kg/s, determine the overall thermal efficiency of the engine.
This procedure has actually been used to "weigh" astronauts in space. A 42.5-\rm kg chair is attached to a spring and allowed to oscillate. What is the mass of the person
Figure 25-18 shows a parallel-plate capacitor of plate areaA and plate separation d. A potential differenceV0 is applied between the plates. While thebattery remains connected, a dielectric slab of thicknessb and dielectric constant κ is placed bet..
A football kicker is trying to make a field goal from 41.0 m, What minimum speed is needed to clear the 3.10m high crossbar
Water flows from a fire truck through a hose that is 10.7 cm in diameter and has a nozzle that is 2 cm in diameter. what is the gauge pressure in the truck
the n = 2 state of hydrogen has a lifetime of about 10^-8 sec. Suppose the atom jumps from the n=2 state to the ground state, what is the uncertainty in the energy of the photon that is emitted
18th Century cannon had a maximum range of 1.10 miles when fired on level ground. Find the velocity of the cannonball as it leaves the cannon
An uncharged nonconductive hollow sphere of radius 12.0 cm surrounds a 14.0 µC charge located at the origin of a cartesian coordinate system. A drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. Calculate..
State clearly the difference (a) between electric potential and electric field, (b) between electric potential and electric potential energy.
A ray of light strikes the midpoint of one face of an equiangular (60°-60°-60°) glass prism (n = 1.5) at an angle of incidence of 32.5°. find the angles of reflection at the surfaces
if the coefficient of kinetic friction between the 50-kg crate and the ground is .3 determine the distance the crate
A 30.00 kg block starts from rest at the top of a 25.0 m long 30.0° incline. How much work is done by friction
Two Automobiles traveling at right angles to each other collide and stick together. Car A has a mass of 1200 kg and had a speed of 25 m/s before the collision, What was the speed of car B before the collision
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