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Calculate the efficiency of an engine in a power plant operating between 45 ° C and 350 ° C. Remember that the efficiency is a decimal number less than 1.
The wing of an airplane has an average cross-sectional area of 13 m2 and experiences a lift force of 84,000 N. What is the average difference in the air pressure
A particle whose mass is 6.0 grams and whose charge is 5 nC is released from rest when it is 20 cm from a second particle of charge 8 C. Find the magnitude of the particle's initial acceleration
Two small silver spheres, each with a mass of 10.9 g, are separated by 1.11 m. Compute the fraction of the electrons in one sphere that should be transferred to the other to produce an attractive force of 1.07*104 N (about 1 ton) among the spheres. T..
A toaster uses a heating wire. When the toaster is turned on at22 °C, the initial current is 1.19 A. A few seconds later, thetoaster warms up and the current has a value of 0.927 A. The average temperature coefficient of resistivity for this wire ..
What is the value? in this situation, the interference pattern yet appears showing that each individual electron can interfere with itself.
A flywheel has zero thickness at the center and is h thick at the edge, and has a radius R, and has a total mass M. Calculate the energy stored if it rotates in time T
If two polarized filters are blocking the same beam, one after another, how should you orient a third filter placed in between the two in order to allow the most light through?
The hydrogen atom consists of a proton of mass 1.67*10^-27Kg and an orbiting electron of mass 9.11*10^-31kg. In one of it's orbits, the electron is 5.3*10^-11m from the proton. what is the mutual attractive gravitational force between the electron..
A series RCL circuit has a resonant frequency of 2200 Hz. When operating at a frequency other than 2200 Hz, the circuit has acapacitive reactance of 5.50 ohms and an inductive reactanceof 35.0 ohms.
two small metallic spheres each of mass m 0.200 g are suspended as shown. the spheres are given the same electric
the driver of a 2000 kg car moving at 30 m/s presses on the break pedal. if the braking force is 10,000 N how far does the car travel before stopping
A convex mirror has a radius of curvature whose magnitude is 47 cm. The mirror is positioned on a horizontal optical bench with its front surface at 0 cm. A 6.0 cm long fluorescent lamp oriented vertically is placed at +103 cm. What is the focal l..
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