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Assume you send a light signal of frequency f toward a mirror that is approaching you at speed v. Find what is the frequency of the reflected light that the mirror returns to you?
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. A -50nC charge is placed at the position ( 2m, 3m ) and fixed in place. What are the components of the total electric field at the location (..
A tennis ball with a velocity of +7.6 m/s to the right is thrown perpendicularly at a wall. what is the average acceleration of the ball while it is in contact with the wall
In a discussion person A is talking 1.6 dB louder than person B, and person C is talking 3.3 dB louder than person A. What is the ratio of the sound intensity of person C to the sound intensity of person B?
A motorist drives north for 35 minutes at 85 km/h and then stops for 15.0 minutes. He then continues north, traveling an additional 130 km in 2 h.
At what height above the earth is the free-fall acceleration 20% of its value at the surface. What is the speed of a satellite orbiting at that height
Consider the expansion of 60.0 moles of a monatomic ideal gas along processes 1 and 2 in the figure below. In process 1 the gas is heated at constant volume from an initial pressure of Pi = 95 kPa to a final pressure of Pf = 190 kPa. In process 2 ..
A parallel circuit with a 12kΩ resistor, a 12.0 V battery and a capacitor has a time constant of 55 μs. Compute the capacitance of the circuit? Compute the time it takes for the energy stored in the capacitor to be two thirds of its maximum value?
Two slits are 0.156 mm apart. Amixture of red light (wavelength = 665 nm) and yellow-greenlight (wavelength = 565 nm) falls on the slits. A flatobservation screen is located 2.32 maway.
A cylindrical iron wire of length 16 m is connected to the terminals of a .3 V battery. What is the diameter of the wire, in mm
If an electric field strength greater than 3.88E+6 N/C causes the air to break down and conduct charge (lightning), what is the maximum charge the cloud can hold
you lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. the ray reflects from
A student places an object on the 5.0 cm mark of the meter stick. He places a positive lens that he knows has a focal length of 15.0 cm at the 30.0 cm mark on the meter stick. From the data what is the focal length of the negative lens
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