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A camera lens is initially set at f/16 for a shutter speed of 1/160s. If the amount of lighting on the subject is unchanged, and the lens is set at f/5.6, what is the proper shutter speed at this setting?
A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. After ? = 2.85 s, a second small object is launched vertically up from the ground with the initial velocity v0 = 40.2 m/s. At what height from the ground will the two objec..
A metal wire has a resistance of 10.00? at a temperature of 20.0°C. If the same wire has a resistance of 10.55? at 90.0°C, what is the resistance of this same wire
A hydrogen atom emits a photon that has momentum 0.6592 × 10-27 kg·m/s. This photon is emitted because the electron in the atom falls from a higher energy level into the n = 3 level. What is the quantum number of the level from which the electron fal..
q1. 1.76- block at rest on a ramp of height. while the block is released it slides without friction to the bottom of
A string with a mass of 6.00 g and a length of 7.00 m has one end attached to a wall; the other end is draped over a pulley, what is the fundamental frequency of vibration
The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radially inward force of 68 N. Find out the effective coefficient of kinetic friction between the wheel and the wet rag.
The track for a racing event was designed so that riders jump off the slope at 30 angle, from a height of 5 ft. Determine the maximum height he attains
A charged particle of mass m and charge +q is placed in the vertical electrical field E(x)= A-Cx, Find expression describing the angular frequency of the charged particle oscillations
An elevator ascends 200m with maximnum speed of 5.0 m/s. how far deos the elevation move while accelerating to full speed from rest
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an energy of -17.30 eV. What is the energy of the first photon emitted
A large metal ring has a radius of 0.30 m and a mass (uniformly distributed) of 2.5 kg. The ring hangs from a nail as shown. What is the rotational inertia of this object
A river flows at a speed of 12m/s from north to south. A powerboat can move at a constant maximum speed of 23 m/s in still water. find the maximum velocity of the boat traveling upstream
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