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Let Vp, Ip and Np be the voltage, the current and the number of turns of the primary of an electric transformer and Vs, Is and Ns be the voltage, the current and the number of turns of its secondary. If this transformer is not 100% efficient, which of the following must be true?
A) Vp = Vs
B) Vs Is > Vp Ip
C) Vs Is = Vp Ip
D) Ip = Is
E) Vs Is < Vp Ip
a small asteroid mass of 120g strikes a glancing blow at a satellite in empty space. the satellite was initially at
A light beam is incident on heavy flint glass (n = 1.62) at the polarizing angle. Calculate the angle of refraction for the transmitted ray
Three identical boxcars are coupled together and are moving at a constant speed of 28.0 on a level, frictionless track. What is the speed of the four cars
The average density of the planet uranus is 1.27 x 10^3 kg/m^3. The ratio of the mass of neptune to that of Uranus is 1.19. Find the average density of Neptune
q1. 16.8-kg sled is being pulled across a horizontal surface at a constant velocity. the pulling force has a magnitude
Waves in a 5.0 m rope travel at a speed of 92 m/s. If the tension in the rope is 497 N, What is the mass of the rope
When the tension in a cord is 77.4 N, the wave speed is 132 m/s. What is the linear mass density of the cord
The electric potential in a region of space is V(x, y, z) = (x+y-3y2)V, where x, y and z are in meters. What acceleration would this field exert on a proton located at the origin
An antifreeze solution is made by mixing ethylene glycol (? = 1130 kg/m3) with water. determine the volume percentage of ethylene glycol in the solution
Two masses, m1= 3.32 kg and m2= 5.00 kg are on a horizontal frictionless surface and they are connected together with a rope, What is the acceleration of the whole system, when this maximum force is appiled
A rocket traveling at 0.540c sets out for the star, which is 5.45ly away from earth. It will return to earth immediately after reaching the star. According to the rocket crew how far will the rocket travel
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 2 state, What is the energy of the Hydrogen atom
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