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In an experiment, olive oil (n=1.47) is added to a glass of water (n=1.33) slowly to form a thin film on top of the water. When the film appears to be dark under a red light (=685 nm) for the first time, no further addition of the oil is made. What color, measured in wavelength, will the film appear to be if the glass is directly under the sun light?
Two solid metal balls are placed in contact with each other. The first ball is made of a material twice as dense as the second ball; the first ball has a radius of 1, the second has a radius of 3. The gravitational force between them is F1.
At rest, a car's horn sounds the note A (440Hz). The horn is sounded while the car is moving at a velocityv. Is the bicycle ahead or behind the car
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. What is his acceleration as he comes to rest on the pad
A 1100kg automobile travels at 80km/h. What net work would be required to bring it to a stop
Four point charges of magnitude 3.9 µC are at the corners of a square of side 3 m. Find the electrostatic potential energy if all the charges are negative
You want a screen to be illuminated with an intensity of 662 mW/m2. The screen is 10.05 m away from the light source, What is the power of the light source
An LC circuit has a 9.00 m/H inductor. The current has its maximum value of 0.550 A at t= 0s . A short time later the capacitor reaches its maximum potential difference of 62.0 V. What is the value of the capacitance?
a 500 g mass hangs at the end of a 40 cm long string. it is struck by a 250 g mass moving at 0.5 ms to the right.
How much mass must be converted into other forms of energy
A sailboat is traveling east at 5.5 m/s. A sudden gust of wind gives the boat acceleration (0.60 m/s2, 40 degree north of east). Find the boat speed and direction 6.0 second later
a block of mass 5.0 kg is attached to a horizontal spring with spring constant 25.0 nm. the block is pulled a distance
The coefficient of linear expansion os steel is 0.000012/C. A section of a railroad track consists of 5.0 km in length. By what length would this rail change
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