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Inside an insulated container(so no thermal energy can be exchanged with the surroundings). What is the number of ways blocks A and B can have 5 quanta each?
What frequency do you hear?( in HZ)? What frequency does your friend hear if you suddenly start singing at 417 Hz?
The developed photograph will show a halo around the image of the spot. If the glass plate is 3.30 thick and the halos have an inner radius of 5.68 , what is the index of refraction of the glass.
A jetliner is moving at a speed of 244 m/s. The vertical component of the plane's velocity is 33.4 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
If Polaris were to burn out today, how many years from now would we see it disappear? What time interval is required for sunlight to reach the Earth?
When a high-power laser is used in the Earth's atmosphere, the electric field associated. What laser beam intensity will produce such a field?
Two people with a combined mass of 120 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 8.30 cm. When the car hits a bump in the road, it oscillates up a
Five particles undergo damped harmonic motion. Values for the spring constant k, the damping constant b, and the mass m are given below. Which leads to the smallest rate of loss of mechanical energy
A 220-kg wooden raft floats on a lake. When a 75-kg man stands on the raft, it sinks 4.0 cm deeper into the water. When he steps off, the raft vibrates for a while. (a) What is the frequency of vib
A cosmic-ray proton in interstellar space has an energy of 17.0 MeV and executes a circular orbit having a radius equal to that of Jupiter's orbit around the Sun (7.78 1011 m). What is the magnetic
Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year.
A parachutist bails out and freely falls 66 m. Then the parachute opens, and thereafter she decelerates at 2.2 m/s2. She reaches the ground with a speed of 2.8 m/s. (a) How long is the parachutist
A converging lens has a focal length of f = 23 cm. An object is placed 36 cm from the lens. Find the size of the image in cm if the object has a height of 7 cm. Express the answer with one decimal
What can you affirm about the cannonball's velocity at that instant of time as compared to its initial velocity (at launch)? vx and vy stand for the x and y components of the cannonball's velocity.
A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building?
A 10.0 g bullet is fired horizontally into a 104 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 157 N/m.
Suzie (of mass 40 kg) is roller-blading down the sidewalk going 46 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop
If the coefficient of kinetic friction between the box and the floor is 0.570, how long does it take to move the box 4.00 m, starting from rest?
While on vacation you rent a moped and go cruising around a tropical island. If you take a 10.0 degree banked curve with a radius of 15.0 meters at 12.0 m/s, what is the minimum coefficient of stati
If small lead weight is attached near the rim of the pulley and this experiment is repeated, will the speed of the block increase, decrease or stay the same? Explain.
A sheet of glass has and . A narrow beam of white light is incident on the glass at 33.0. What is the angular spread of the light inside the glass?
A dog sits 1.09 m from the center of a merry- go-round with an angular speed of 1.78 rad/s. If the magnitude of the force that maintains the dogs circular motion is 32.8 N, what is the dogs mass?
The chalk has a radius r, and the channel has a radius 2r. What is the frequency of small oscillations for the chalk rocking back and forth in the channel?
A rock of mass m = 1.0 kg is tied to a string of length L = 1.9 m and is twirled in a vertical circle as shown in the figure below. The speed v of the rock is constant; that is, it is the same at t
Marisa is at a point in her pregnancy when the zygote is moving down to her uterus, and the placenta and umbilical cord are beginning to form.