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The Nobel Prize was given to Penzias and Wilson in 1978 for their observation of the Cosmic Background Radiation, the residual radiation from the Big Bang that permeates the universe. This radiation is found at a frequency of 160.2 GHz (1GHz = 1 × 109 Hz). If the universe is approximated as an ideal blackbody, calculate the temperature of this residual radiation.
Three objects are connected on the table as shown in figure. The table is rough and has a coefficient of kinetic friction of 0.350. The objects have masses of 4.00 kg, and 2.00 kg, as shown, and the pulleys are frictionless.
Suppose the magnitude of the electric field in an electromagnetic wave is doubled, By what factor does the maximum intensity of the wave change
to measure the acceleration due to gravity on a distant planet an astronaut hangs a 0.055-kg ball from the end of a
A block of unknown mass is attached to a spring of spring constant 6.5 N/m and undergoes simple harmonic motion with an amplitude of 10 cm. Calculate the maximum acceleration of the block
A five-slit system with 7.8 um slit spacing is illuminated with 615 nm light. Find the angular positions of the first two maxima
A tennis player tosses a tennis ball straight up and catches it after 3.0 s. Find the initial velocity of the ball
A 300 g object attached to the end of a spring oscillates with an amplitude of 7 cm and a frequency of 1.80 Hz. Find its maximum speed and maximum acceleration
Amtrak's 20th-Century Limited is en route from Chicago to New York at 120km/h when the engineer spots a cow on the track. What is the magnitude of the train's acceleration
In the problem description is states that neutron is fired into a nucleus and knocks out a particle it collides with in a inelastic collision. Determine the internal energy change of the nitrogen nucleus
Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships, then how many missions would be possible in one year
Three capacitors are connected in series. The equivalent capacitance of this combination is 2.60, What is the third capacitance (in F)
An RLC circuit of a 2 picoF capacitor, a 4.4 ohm resistor, Find the phase shift in radians between the current and the driving voltage
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