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An inspector wants a mirror that produces an upright image with magnification of 7.5 when it is located 14.0 mm from machine part. What kind of mirror would do this job? Explain choice What is radius of curvature?
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 120 ?F. What is the potential difference across the capacitor plates
A block of wood with volume V floats in water with 0.65V submerged. In oil the block floats with 0.84V of its volume submerged
An elastic cord is 64 cm long when a weight of 56 N hangs from it and is 69 cm long when a weight of 83 N hangs from it. What is the "spring" constant of this elastic cord.
Abe and Bob are bird-watching, hoping to add a particular song bird to their "life list" of species. They agree to split up so they can cover a larger area. Bob is as far away as possible, such that he can still hear the bird. How far away is he fr..
The energy eigenstates of the hydrogen atom are described by Schrödinger wavefunctions ?(r), where the energy of the ground state ?100(r)=-13.6eV. Determine the expectation value of the energy
A deep sea diver should breath a gas mixture that has the same oxygen partial pressure as at sea level, What is the partial pressure of oxygen at sea level
Particle X has a speed of 0.750c and a momentum of 5.78E-19kg*m/s. What is the total energy of the particle
A sheet of plywood 1.39 cm thick is used to make a cabinet door 55.5 cm wide by 69.5 cm tall, what is the moment of inertia of the door about the hinges
You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 46.6 C. The only thermometer you can find at your workbench reads in degrees Fahrenheit. If the initial temperature of the sample is 67.7 F, what i..
A block of mass 4.25 kg hanging from a light string is struck by a projectile of mass 250 g. The projectile sticks to the mass after collision and the two together rises a vertical distance of 12 cm. What is the velocity of the two-mass system immedi..
An astronaut of 100 kg (including space suite) is conducting a apcewalk and exerts a force of 40 N on a 10000 kg spacecraft. What force is exerted on the astronaut by the spacecraft
A heat engine does 180J of work per cycle while exhausting 440J of waste heat. What is the engine's thermal energy
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