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A beam of light has a frequency of 367x1015 Hz. itis projected into a metal. Electrons are liberated with a maximumenergy of 4.32 eV.
Calculate the work function of the metal.
Three forces acting on an object are given by 1 = (?2.45 + 5.60) N, 2 = (5.30 ? 1.3) N, and 3 = (?42.5) N. What is the direction of the acceleration
A 5.6 kg block hangs from a spring with spring constant 1840 N/m. The block is pulled down 4.1cm from the equilibrium position, What is the total mechanical energy of the motion
q1. a 5.00-g bullet is shot through a 0.96-kg wood block suspended on a string 2.70 m long. the center of mass of the
Two tuning forks oscillating coherently and in phase at 12000Hz are separated by 0.35m. What is the phase angle difference between the waves
Superman leaps in front of Lois Lane to save her from a volley of bullets. In a 1-minute interval, an automatic weapon fires 152 bullets, Find the average force exerted on Superman's chest
A circular disk with the rectangular hole has a radius of 0.540 m and mass of 0.440 kg. It is suspended by a point on its perimeter. The moment of inertia about this point is I_p = 1.7×10-1 kgm2.
An inductor in the form of a solenoid contains 410 turns and is 12.8 cm in length. A uniform rate of decrease of current through the inductor of 0.421 A/s induces an emf of 175 µV. What is the radius of the solenoid? In mm
A snowman is made of three spheres of radii R,2R,3R with the largest sphere on the bottom and the smallest sphere on top. Find the center of mass of the snowman
A photoelectric-effect experiment finds a stopping potential of 1.93 V when light of 200 nm is used to illuminate the cathode, From what metal is the cathode made
How much waste heat is produced by an electrical power station that uses 1.00 ? 1014 J of heat input with an efficiency of 40.0%? What is the ratio of waste heat to work output
A tungsten wire in a vacuum has length 15.0cm and radius 1.00mm. A potential difference is applied across it. What voltage drop is required across the wire
A vertical-axis capstan drum 60 cm in diameter was used to pull inthe anchor chain of a whaler a century ago. Six horizontal arms 1.2m long protruded from the top of the drum, and a man on each armexerted a force of 300 N on it. The efficiency of ..
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