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A 9.4 resistor and a 6.3 resistor are connected in series with a power supply.
a) The voltage drop across the 6.3 resistor is measured to be 13 V. Find the voltage output of the power supply.b) The two resistors are connected in parallel across a power supply, and the current through the 9.4 resistor is found to be 0.25 A. Find the voltage setting of the power supply.
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 287.0 Hz. The tuner hears 2.0 beats per second. What was the original frequency of the untuned string
A 0.2kg toy car rolls down ramp. If the car started from rest at a height of 0.30m, At what speed do the two cars move after the collision
A particle known as a pion lives for a short time before breaking apart into other particles. According to this hypothetical person, how far does the laboratory move before the pion breaks apart
A 1500 {rm kg} car skids to the halt on a wet road where mu_k = 0.50. How fast was the car travelling if it leaves 66-{rm m}-long skid marks.
Determine the kinetic energy of the electron in joules
if we have an electron orbiting an atomic nucleus. we may think the electron is doing a circular motion around the
You send a beam of light from a material with index of refraction 1.19 into an unkown material. In order to help identify this material, What is the index of refraction of the unknown material
A camera is equipped with a lens with a focal length of 23 cm. how far from the film should the lens be placed
Consider Iron asteroid (density 7900 kg/m^3) shaped like a cylinder 5.0 km long and 3.0 km in diameter, How much fuel is required to spin up the asteroid
Two identical positive charges exert a repulsive force of 6.4* 10^-9 N when separated by a distance of 3.8*10^-10 m. find the charge of each.
An electron of mass, m, collides with an atom of mass M. The atom is initially at rest, What is the minimum speed of the electron in order to excite the atom
A 90.3-MHz radio wave is broadcast from KTUH's transmitter. how much time does it take for the radio wave to reach you
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