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In a photoelectric effect experiment, visible radiation of energy 2.68 eV is incident upon a metal of unknown work function. If the stopping voltage is 0.9 Volts what is the work function of the metal? Express your answer to two decimal places in Volts.
A hockey stick is swung with an average angular acceleration of 1.5 rad/s2. What is an angular velocity of the stick when it strikes the ball at the end of 0.8 second swing.
If the initial temperature of the horseshoe is 600?C, and initial temperature of the water is 40?C, what is the equilibrium temperature of the system? Suppose no heat is exchanged with the surroundings.
A diving board of length 3.00m is supported at a point 1m from the end, and a diver weighing 520 m stands at the free end . The diving board is of uniform cross section and weighs 270m.
Saturn's moon Titan is the largest moon in the solar system. Its mostly-nitrogen atmosphere exerts a pressure of 1.60×105 Pa at the moon's surface.
An inductor that has an inductance of 15.0 H and resistance of 30.0 W is connected across a 100-V battery. Calculate the rate of increase of the current
Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 5 bar and a quality of 60%. Heat transfer occurs until the tank contains only saturated vapor. Determine the final mass of vapor in the tank, in kg, and the final pressu..
How far (in {rm nm}) does the electron move before reaching a turning point? Because of their larger mass, the protons remain fixed all through this interval of time.
An 0.8kg baseball with an initial velocity of 40m/s is hit with a baseball bat so that its recoil velocity is 60m/s in the exact opposite direction. what is the average force the bat puts on the ball
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. find the total kinetic energy of each wheel
The difference in piezometric pressure, pz,A – pz,B. Express both answers in kPa and pressure differences pA - pB.
If the loop is placed in a uniform magnetic field of magnitude 0.200 T, illustrate what is the maximum torque that can act on it? The resistivity of copper is 1.7 multiplied by 10-8 · m.
A person exerts a horizontal force of F = 190 N in the test apparatus. (h of arm = 0.34 m. And h of flexor muscle= .054 m) Find the horizontal force M that his flexor muscle exerts on his fore arm.
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