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What exactly is the work function of a metal? Is it the jolt of energy required to obtain any electron out? The maximum jolt of energy needed to obtain an electron out? The minimum jolt ? Something else?
a boy hears an eco of his own voice from a distant hill after 1s. The speed of the sound is 340m/s. What is the distance of the hill from the boy
A wave on a string is described by the relation y = A sin(47t - 0.023x), where t is measured in seconds and x in meters, with A = 0.18 m, Find the frequency of the wave
Consider a system composed of a mixture of 2.50kg of ice and 50 gr of liquid water and a small separate container of finely powdered salt. This physical system is contained in a fully insulated container that prevent.
a 1100kg auto is at rest at a traffic signal. At theinstant the light turns green, how far is the com of the auto-truck system from the traffic light at t=1.6s
A device uses a Stirling cycle on 433 moles of a monatomic ideal gas between two reservoirs with temperatures of 416 K, How much work is done by the device on the gas
In a proton accelerator, the energy of proton is 20MeV, the diameter of the beam is 2.0mm, Find the current density and the particle density in the beam
on a spacecraft two engines fire for a time of 550 s. one gives the craft an acceleration in the x direction of ax
A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance. It takes time 0.420s to pass this window, which is of height 1.92 m. How far is the top of the window below the windowsill from which the flowerpot ..
A long, straight wire carrying a current of 316 A is placed in a uniform magnetic field that has a magnitude of 7.42 × 10-3 T. Find a point in space where the net magnetic field is zero
In the figure, a point charge 1.3μ C is adistance d/2 directly above the center of a square of side d = 0.26cm . What is the magnitude of the electric flux through the square? (
q1. 1.76- block at rest on a ramp of height. while the block is released it slides without friction to the bottom of
Suppose a projectile is to be fired from the floor onto a table 1.1 meters high that stands 92 centimeters from the point at which it is fired
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