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Why are rainbows so frequently seen during summer but so seldom are they seen during winter?
A 545g block is pushed onto a spring (k = 485 N/m) at a distance of 18.0 cm. When the ball is released, what is its velocity? What is the elevation angle of the ramp?
An aquarium contains a 5 - cm layer of water ( n = 1.333) floating on top of carbon tetrachloride ( n = 1.461) what is the angle of refraction into the air
A car with a 1.49 m long radio antenna travels at 94.5 km/h in aplace where the Earth’s magnetic field is 6.93 ×10^−5 T. What is the maximum possible induced emf in the antenna as it moves through the Earth’s magnetic field?
A 420g , 6.50-cm-diameter solid cylinder rolls across the floor at 1.40m/s, What is the can's kinetic energy
A lamp is designed to operate at a temperature of 3100K. If the lamp is operated at a higher voltage that raises its temperature to 3500K
Engine oil (?=0.20Pa?s) passes through a 2.60mm diameter tube in a prototype engine. What pressure difference is needed to maintain a flow rate of 6.5mL/min
A speeding car passes a highway patrol checkpoint and thendecelerates at a constant rate. What was the car's velocity when it passed the checkpoint? What was the acceleration of the car?
A solenoid 1.30m long and 2.60cm in diameter carries a currentof 18.0A. the magnetic field inside the solenoid is 23.0mT. Find the length of the wire forming the solenoid
An object O is located in front of two thin symmetrical coaxial lenses 1 and 2, with focal lengths f1 = 24 cm, f 2 = 9 cm correspondingly, Determine where does the image form
Determine the wavelength of light emitted when a hydrogen atom makes a transition from the n = 13 to the n = 3 energy level according to the Bohr model. The Rydberg constant is 1.09737 × 10^7 m?1 .Answer in units of nm
Communication satellites are geosynchronous, meaning that they have a rotational period equal to one day. what is the altitude of a geosynchronous satellite above the Earth's surface in kilometers
Blocks sliding 1 A block with mass m = 17.0 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4304.0 N/m after being compressed a distance x1 = 0.576 m from the spring’s unstretched length. The floor is frict..
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