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The frequency of light emitted by a toaster is 2.5 GHz. A glass of water requires 1.5 KJ to heat it to boiling. How many toaster photons are required to heat the water?
The lines in a grating are uniformly spaced at 1520nm. Analyse the angular separation of the second order bright fringes between light of wavelength 603nm and 615.4 nm. Reply in units of mrad.
The voltage drop along a 30.0m segment of a power line made from copper wire (a very good conductor) is 1.2V, while carrying a current of 25.0 A. How large is the electric field along the wire
The magnitude of F is 306 newtons and it points at 93o measured counter clockwise from the positive x-axis. What is the y component (in newtons) of F.
Two small metallic spheres, each of mass m = 0.212 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.9 nC, and they come to equilibrium when each string is ..
A ping-pong ball of mass 2 gm and traveling with a velocity of 2 m/s collides with stationary tennis ball of mass 10 gm. Calculate the velocity of the ping-pong ball after the collision
How many kilocalories of heat are produced when the brakes are used to bring a 930 kg car to rest from a speed of 102 km/h.
A car is driving 22.7m/s flat ground drives off 42.3 m high cliff. How much time does it take to reach the ground.
A krypton laser produces a cylindrical red laser beam 2.0 in diameter with 5.0 of power. What is the light intensity on a wall 2.2 away from the laser
Find out the magnitude of angular acceleration of the wheel
The pilot of an aircraft wishes to fly due west in a 34.60 km/h wind blowing toward the south. The speed of the aircraft in absence of a wind is 145 km/h.
One of the harmonic frequencies of tube A with two open ends is 1020 Hz. The next-highest harmonic frequency is 1088 Hz. What is the number of this next-highest harmonic
Two negative point charges are separated by 16 and feel a mutual repulsive force of 1.55. The charge of one is three times that of other.
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