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A motor has coils with a resistance of 26 Ω and operates froma voltage of 240 V. When the motor is operating at its maximumspeed, the back emf is 111V.A) Find the current in the coils when the motor is first turned on. Answer in units of A.B) Find the current in the coils when the motor has reached itsmaximum speed. Answer in units of A.C) If the current in the motor is 8 A at some instant, what is theback emf at that time? Answer in units of V
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 190 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. How many nuclei are in the beam
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
in this module you have learned about muscle structure and function. in this case assignment you will explore the
A rectangular loop of wire that is 36 cm wide and 25 cm long lies in the x-y plane in a region where the magnetic field is B = 1.1 T and directed at an angle of 63° with the z axis
An 81 kg running back moving at 4.0 m/s makes a perfectly inelastic collision with a 105 kg linebacker who is initially at rest. What is the speed of the players just after their collision
The resistance of a very fine aluminum wire with a 17?m x 17?m square cross section is 1200 ? . A 1200 ? resistor is made by wrapping this wire in a spiral around a 3.9-mm-diameter glass core
The only force acting on a 3.0 kg body as it moves along the positive x axis has an x component Fx = -7x N, What is the velocity of the body at x = 4.9 m
A puck of mass m = 1.50 kg slides in a circle withradius r = 20 cm on a frictionless table while attachedto a hanging cylinder of mass M =2.50 kg by a cordthrough a hole in the table. What speed keeps the cylinder atrest
A 1500 kg vehicle is making a circular turn on a flat roadway. What is the max speed the vehicle can travel before it starts to slide
Given: G = 6.67259 × 10^?11 Nm2/kg2 Voyagers 1 and 2 surveyed the surface of Jupiter's moon Io, Estimate the speed with which the liquid sulfur left the volcano
The solar energy coming to the earth by radiation is 1,340 W/m If the sun has a radius of 7.000*10^8m, what is the temperature of the sun
A circuit consists of an idealized 191 mH in- ductor and a 25.4 µF capacitor. calculate the maximum energy stored in the inductor
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