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A coal power plant with 30% efficiency burns 10 million kilogramsof coal a day. (take the heat of combustion of coal to be 30MJ/kg)a) What is the power output of plant? (I am using part of theefficiency of the plant?)b) At what rate is thermal energy being discarded by this plant?
A particle of mass 4m is placed at a distance of 2.00 m from another particle of mass m. how far will that be orbiting around the earth
A 70Kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, decide average resistive force exerted on him by the water.
A 4.95-kg ball, moving to the right at a velocity of +1.60 m/s on a frictionless table, Find the final velocities of the balls if the collision meet the following conditions
A 1024x1024 pixel detector array with 20 mu m pixels is placed in the focal plane of a 4 m diameter telescope with a system focal ratio of 116. What is the angular scale (in arcsec per pixel) and the field of view for this detector?
A child knocks a 1.2 kg vase off of a table 1.5 m above the ground. What impulse did the floor exert on the vase
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
From the difference in mass of a hydrogen atom to the mass of a proton and an electron, estimate the binding energy of the electron in the hydrogen atom. Compare this to the ionization energy of the ground state electron as calculated by the Bohr mod..
The G string on a violin has a fundamental frequency of 196 Hz. It is 33.0 cm long and has a mass of 0.500 g. what is the effective length of her string
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
Diffraction studies involving X-rays, electrons or neutrons give information about the crystallographic properties of solids. Compare these three techniques with reference to particle energies and types of information that can be obtained. Which ..
A camera has a telephoto lens of 260-mm focal length. The lens can be moved in and out a distance of 18.5 mm from the film plane by rotating the lens barrel. what is the closest object distance that can be focused
A spring with a force constant of 1495 N/m is compressed 11.1 cm. Find the work done by the force compressing the spring
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