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Two photons have different frequencies f1 and f2 . If the ratio of their momenta is 22.5, what is the ratio of their frequencies? Please show work.
An 18 g rifle bullet travelling 180m/s buries itself in a 3.6kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Verify the horizontal component of the pendulum's displacement.
A 3.00-kg crate slides down a ramp. The ramp is 1.00 m in length and inclined at an angle of 30.0o. The crate starts from rest at the top, What is the speed of the crate at the bottom of this new ramp
A frictionless pulley has the shape of a uniform solid disk of mass 6 and radius 25 . A 1.90 stone is attached to a very light wire that is wrapped around the rim of the pulley.
for a horizontal block spring system, the maximum displacement is 15cm. if k = 150N/m, calculate the mass of the block, calculate maximum value of kinetic energy
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80m/s^2. What is its initial velocity as it leaves the ground
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ {rm C}? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
Consider two dimensional simple triangular lattice for free electron metal with two electrons per atom. Assume the lattice constant is a, find the areas electron and hole pockets that are formed in the second and first Brillouin zones respectively. F..
Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Find Neils velocity direction relative to due west
An airfoil in a test chamber is exposed to air. Well ahead of the airfoil the pressure, temperature, and density are standard sea level conditions. Determine the velocity of the airflow
What is an average magnitude of the Pointing vector 5.0miles from a radio transmitter broadcasting isotropically with an average power of 250-kW?
A coffee filter of mass 1.5 grams dropped from a height of 2 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? begin from the Energy Principle, and choose as the s..
What total impulse was imparted by these forces. Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.0 cm-3, and their speed is 702 km/s. Find the current density of these protons.
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