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Assume that the value of n in a radioactive transition in hydrogen changes only with unity, as is suggested by the correspondence principle. Estimate for what range of values of n the photon that is emitted will have wavelengths in the visible range of 400 to 650nm?
A 5 kg ball hangs from the ceiling by a thread. The walls of the room are 5 m apart and they are made of metal, What is the charge on the ball
A block with mass m = 4 kg is sitting on the ground and not moving. The acceleration due to gravity is g = 9.81 m/s2. Please answer the following questions.
The avarage intensity of solar radiation that falls normally on surface just outside the earth's atmosphere is 1.4 kW/m^2. What radiation pressure is exerted on this surface, assuming complete absorption? How does this pressure compare with the earth..
two blocks are connected by a rope passing through a pulley. one block is on a table and has a mass of 1kg the other is
What is the highest value of the magnetic force.
An electron in the hydrogen atom jumps from a level in which the energy is 1.89 eV higher than the energy of the final lower-energy level. What is the frequency of the light emitted in this transition
When you take a bath, how many kilograms of hot water (36.4°C) must you mix with cold water (14.4 °C) so that thetemperature of the bath is 32.8 °C? The total mass of water(hot plus cold) is 183 kg.
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. determine the speed of the lighter box
A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. what is the bicyclist's speed at the bottom of the hill
The two metal objects in the figure have net charges of +68 pC and -68 pC, which result in a 28 V potential difference between them, What is the capacitance in picofarads of the system
An electron moving at a speed of 0.68c collides head on with a positron alsomoving at 0.68c. Determine the energy and momentum of each photon
The phase angle of an RLC series circuit with an inductive reactance of 200 ? and a capacitive reactance of 100 ? is 40.0°. What is the value of the resistor in this circuit
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