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A student was tuned into 99.5 fm on the radio dial. They found the length of half of the wavelength to be 1.48 meter. Determine what is the measured velocity?
The wavelength of green light is 550 nanometers. Determine what is its frequency? (c = 3.00 x 108 m/s)
Find which equation can't be used to calculate the speed of light in vacuum?
Water flowing through a 2.9 cm-diameter pipe can fill a 300L bathtub in 3.6 min. What is the speed of the water in the pipe
Suppose your waffle iron is rated at 1.20 kW when connected to a 3.00 102 V source. What current does the waffle iron carry
A 41.2-kg boy, riding a 2.65-kg skate board at a velocity of +5.27 m/s across a level sidewalk,jumps forward to leap over a wall. Just after leaving contact withthe board, the boy's velocity relative to the sidewalk is 5.52m/s, 8.64° abovethe hori..
When a firecracker is placed inside a bowling ball, the momentum before the explosion is equal to the momentum after the explosion because
Use the semi-infinite-well potential to model a deuteron, a nucleus consisting of a neutron and a proton. How many excited states are there
An electron in an atom has an orbital angular momentum with ml = 0. What is the component morb,z? (J*s) What is the component ?orb,z? (J/T) If an atom is in an external magnetic field B of magnitude 45 mT and directed along the z-axis, what is the..
A railroad whistle is sounded. An echo is heard 5.0 seconds later. If the speed of sound is 343m/s, how far away is the reflecting surface?
Two balls, of masses m(a) = 40 g and m(b) = 60 g, aresuspended. The lighter ball is pulled away to a 60 degreeangle with the vertical and released. what is the velocity ofthe lighter ball before impact
This question requires three answers. Three resistors are connected in parallel with a 9.0 V battery. What is the voltage drop across R2
suppose an atom having atomic number z is ionized so that all but 1 of its z electrons are removed. predict the
A 400 cm rope under a tension of 90 N is set into oscillation. The mass density of the rope is 170 g/cm. What is the frequency of the first harmonic mode (m = 2)?
Two traveling sine waves, identical except for a phase difference of phi, What is the phase difference between the two waves
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