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A common He-Ne laser emits light of wavelength 633 nm with a bandwidth of 1.00 x 108 Hz. Find the uncertainty in energy of a photon emitted by the laser.
A 2.2-kg cart is rolling along a frictionless, horizontal track towards a 1.9-kg cart that is held initially at rest. What was the velocity of the first cart when the second cart was still at rest
The steel I-beam in the drawing has a weight of 1.50 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends
You are driving 110 miles to Columbus from Cincinnati. The first 100 miles you drive a good speed of 75mi/h . Unfortunately, you hit a traffic jam the last 10 miles where at least you move a constant 8.00mi/h .
In a summer day is the outside temperature is 100oF, what will be the temperature in centigrade scale (oC) and on the Kelvin scale
A gasoline engine absorbs 1900 J of heat and performs 530.0 J of mechanical work in each cycle. What is the efficiency of the engine
A car takes a sharp turn on a road. Which of the following provides the centripetal force on the car? The weight of the car, frictional force, tangential acceleration, or gravitational force?
After a 0.822 nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.41E+6 m/s. What was the Compton shift in the photon's wavelength
Starting with a pure Sr-90 sample at time t=0, a researcher finds that the Y-90 activity is 22.9 mCi at t = 1 day. What was the activity at t = 0
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12.0 m/s at an angle 46.0 degrees; What is the distance between the two girls
Suppose air, with a density of 1.29 kg/m3 is flowing into a Venturi meter. The narrow section of the pipe at point A has a diameter that is 1/3 of the diameter of the larger section of the pipe at point B. How fast is the air moving at point B
Two blocks each of mass m = 2.98 kg are fastened to the top of an elevator, If the strings can withstand a maximum tension of 88.0 N, what maximum acceleration can the elevator have before the upper string breaks
question a ball is thrown upward from a platform 4.0 m high with a speed of 23 ms at an angle of 37o from the
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