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Calculate the magnitude of the capacitive reactance of a 46.9 μF capacitor connected across a 108 V, 165 Hz source.
A screw with 25 threads per centimeter is driven 1.49 cm into its fixture in 12.4 s with a cordless electric screwdriver. What is the average angular speed of the screwdriver
A woman inside an elevator is standing on a scale. Before the elevation it starts moving the scale shows 50 kg, calculate the acceleration of the elevator if when it starts moving upward the scale reads 70kg. What will the reading of the scale be ..
An ideal heat-engine is to be used in an environment where the ambient temperature is 22.50 °C. What must be the minimum temperature of the hot heat reservoir in order to reach at least 46.40 percent efficiency with heat-engine? (Give the answer i..
Students in a physics lab are to determine the specific heat of copper experimentally. They place 0.150 kg of copper shot into boiling water, what is the specific heat of copper
A stretched guitar string has a fundamental frequency of 100 Hz. By how much (i.e., by whatfactor) would you change each of the following to lower the fundamental to 25 Hz?(a) length(b) tension(c) mass per unit length(d) diameter
A 100kg mass is on an inclined plane of 30 degrees. It's connected to a second unknown mass that hangs over a frictionless pulley. What is the unknown mass required to maintain an acceleration down the place of 1m per sec
A 10-kg block starts from rest on an incline. After 1 second the block travels at 12 m/s 1 meter down the incline. What is the theta, the angle of the incline
Average Length is calculated from 40 measurements as 9589[cm]; but the standard deviation is 800[cm]. What is the proper way to report the average measurement
question a child throws a ball downward from a tall building. note that the ball is thrown not dropped and disregard
In a head-on collision, a car stops in 0.15 second from a speed of 22 m/s. Find what force is applied to the driver by his seat belt during that fraction of a second
the bond length of hf is 91 x 10-12 m.a where does the axis of rotation intersect the molecular axis?b calculate the
What are the philosophical implications for a reality based upon Einstein's concept of a four dimensional universe with a space-time continuum?
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