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A hydrogen atom is excited to the n = 11 level. Its decay to the n = 7 level is detected in a photographic plate. Obtain the wavelength of the detected emission?
An observer at rest with respect to the sun measures the diameter of the earth (in the direction of its motion) as it swings by in its orbit. Compute how many centimeters shorter is this diameter
Two events occur in an inertial system at the same time, but 8145 km apart. What is the time difference between the two events in this second inertial system
A 455 pF capacitor is charged to 155 Volt and then quickly connected to a 255 mH inductor. Find the peak value of the current
A bullet with mass m = 8.00 gram is traveling with a velocity of v0 =365 m/s to the left, when it elastically collides with a metal block of mass M = 5.00 kilogram. Find at what angle does the metal block, M, have a speed of 1.00 m/s
A parallel-plate capacitor has a capacitance C0. A second parallel-plate capacitor has plates with twice the area and twice the separation. What is the capacitance of the second capacitor
An air column in a glass tube is open at one end and closed at the other by a movable piston. The air in the tube is warmed above room temperature, and a 356 Hz tuning fork is held at the open end. Resonance is heard when the piston is at a distan..
A 0.20 kg hockey puck slides across a frictionless ice rink at a constant speed of 25 m/s. Ignoring air resistance, what is the work done on the puck while it is sliding
A 0.100 kg block is suspended from a spring. When a small pebble of mass 40 g is placed on the block, the spring stretches an additional3.8 cm. By the pebble on the block, the block oscillates with amplitude of 15.0cm. (Suppose that the pebble is glu..
determine the properties required amp show your worka. substance ammonia given t 0.00degc and x 0.200
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
An aluminum rod is 24.0 cm long at 20°C and has a mass of 350 g. If 13,500 J of energy is added to the rod by heat, what is the change in length of the rod
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.583 m. Find the final speedv of the sphere's center of mass.
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