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1. The speed all electromagnetic waves in empty space is 3.00 x 10^8 m/s. Calculate the wavelength of electromagnetic waves emitted at the following frequencies:
a. radio waves at 88.0 MHz
b. visible light at 6.0 x 10^8 MHz
2. A tuning fork produces a sound with a frequency of 256 Hz and a wavelength in air of 1.35 m.
a. What value does this give for the speed of sound in air?
b. What would be the wavelength of the wave produced by this tuning fork in water in which sound travels at 1500 m/s?
A skier slides horizontally along the snow for a distance of 28 meter before coming to rest. determine how fast was the skier going
A 72 person stands on a uniform ladder 4.5 long, that weighs 75. The floor is rough; hence, it exerts both a normal force, and a frictional force, on the ladder. The wall, on the other hand, is frictionless; it exerts only a normal force.
a point charge q1 of 2.00x10-6c is placed on the x-axis at -4.0 cm 0 cm. an identical charge q2 is placed at 4.o cm 0
A photon of initial energy 0.10 MeV undergoes Compton scattering. After scattering, the photon's energy is 0.09 MeV. Find the scattering angle for the photon
A 5.44-Ω resistor is connected across a 9 Volt battery. The voltage between the terminals of the battery is observed to be only 7.74 Volt. Evaluate the internal resistance of the battery
a potters wheel-a thick stone disk of radius 0.500 m and mass 125 kg-is freely rotating at 50.0 revmin. the potter can
What is the speed of the stone if it hits the wall
The Isotope tritium has a half-life of 12.3 years. Assume we have 10 kg of the substance. What will be the disintegration constant (1/s)
In a local bar, a customer slides an empty beer mug down the counter for a refill. What was the direction of the mug's velocity just before it hit the floor
A blue puck with a mass of 4.30×10?2kg , sliding with a speed of 0.190m/s on a frictionless, horizontal air table, Find the direction of the velocity of the red puck after the collision
a resonance tube for a pipe-organ is closed at the bottom by a speaker pressure antinode and open to the atmosphere at
A hockey puck is sliding across a frozen pond with an initial speed of 9.7 ms. It comes to rest after sliding a distance of 44.0 m. What is the coefficient of kinetic friction between puck and ice.
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