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A radio station broadcasts at a rate of 89.3 million cyces each second.
what is the period of this wave? (frequency = 89.3 MHz)
if the wavelength is 3.359 meters, what is the speed of this radio wave?
If the speed of light is 3x10^8 m/s, what would be the wavelength of the light created by the laser (in a bar code scanner) that resonates at a frequency of 462,000 GHz?
Two very thick equally-magmetized square plates of side 0.23m and of mass 20 g, Calculate the B field between the two plates, if the distance between them is 0.123 cm
An airplane with a speed of 76.6 m/s is climbing upward at an angle of 49.5 ° with respect to the horizontal, Relative to the ground, determine the angle of the velocity vector of the package just before impact
Two cars are travelling on a dirt road between 3 consecutive poles after 5.40s they are side by side at next telephone pole. The distance between the poles is 66.30m.
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -95?C. By how much does her mass increase
A light ray travels through medium #1 and crosses a boundary into water at an indicent angle of 21.8 degrees. what is the energy of one photon of this light
In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
four charges, q1=1.5 nC, q2=4nC, q3=20nC and q4=-1nC are placed so that q4=(0,0) q1 is north of q4 and .5m away q2 is east of q4 and 1.0m away q3 is SW of q4 at angle of 36.9 degrees
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
a point source of light is 3.5m below the surface of a large pool of water. what is the diameter of the largest circle on the pool's surface through which light can escape
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
How long does it take for the grinding wheel to stop ? Through how many radians has the wheel turned during the interval found in.
Explain by how much horizontal force F must a sprinter of mass 62.0 kg exert on the starting blocks to produce this acceleration?
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