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A small light source at the bottom of a swimming pool that is3.0 m deep emits light uniformly in all directions. Anilluminated circle is formed on the surface of the pool due tototal internal reflection. Calculate the diameter of the circle if n = 1.33 for the swimming pool water.
The pressure of an ideal gas remains at 200 Pa while 1000 joules of heat are removed and its internal energy increases by 2000 joules. What was the change in the volume of the gas
A beam of photons that have a wavelength equal to 6.8pm is scattered by electrons initially at rest. What is the change in wavelength of the photons
A race car has a mass of 701 kg. It starts from rest and travels 35.0 m in 3.0 s. The car is uniformly accelerated during the entire time. Illustrate what net force is exerted on it?
the gravitational force exerted on a baseball is 2.11 n down. a pitcher throws the ball horizontally with velocity 13.5
How much would it cost just to keep the hot water inside the heater for one week? d)Suppose that you wrap the hot water heater on all sides with a 10 cm thick blanket of fiberglass insulation which has a thermal conductivity of 0.04 W/(m K).
An air puck of mass m1 = 0.23 kg is tied to a string and allowed to revolve in a circle of radius R = 1.3 m on a frictionless horizontal table.
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
question as a high-power laser engineer you need to focus a1.17-mm diameter laser beam to a10.3-microm diameter
A car is traveling at 44.0 km/h on a flat highway. What is the stopping distance when the surface is dry
a 15 g bullet is fired into the bob of a ballistic pendulum of mass 1.8 kg. when the bob is at its maximum height the
Models of torpedoes are sometimes tested in a horizontal pipe of flowing water, much as a wind tunnel is used to test model airplanes. With what speed must the water flow in the part of the pipe
question a mass of 0.30 on the end of a spring oscillates with a period of 0.45 and an amplitude of 0.15find the
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