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An ideal transformer steps down 120V to 12V and the 2630 turn secondary supplies 12 A.
a) Determine the current in the primary.
b) Determine the turns ratio.
c) What is the ratio of output power to input power?
How much power is needed to push a 85kg chest at 0.72m/s along a horizontal floor where the coefficient of friction is 0.76
Two spheres of mass m and a third sphere of mass M form an equilateral triangle, and a fourth sphere of mass mB is at center of the triangle.
In a double-slit interference experiment, the wavelength is 577 nm, the slit separation is 0.1 mm, What is the linear distance between adjacent maxima on the screen
A generator rotates at 95Hz in a magnetic field of 0.025T . It has 650 turns and produces an rms voltage of 180V, What is the area of each turn of the coil
A 1480{\rm kg} car pulls a 320{\rm kg} trailer. The car exerts a horizontal force of 3900{\rm N} against the ground in order to accelerate. What force does the car exert on the trailer
A block starts from rest at the top of a 30.0° inclined frictionless plane and after travelling 1.00 m encounters a spring, how much would the block compress the spring
A very long, straight wire has charge per unit length (lambda) . At what distance from the wire is the electric field magnitude equal to E ? How do you solve this problem?
A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is known as a couple moment.
In a physics lab experiment, a student immersed 201 one cent coins (each having a mass of 3.00) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.240 of water at 20 in an insulated contai..
A concave makeup mirror is designed so that a person 26 cm in front of it sees an upright image magnified by a factor of two
A block of mass 2.0 kg is attached to a horizontal spring that has a force constant of 1.70 103 N/m, Find the work done by initially compressing the spring
A 2700 kg truck traveling north at 42 km/h turns east and accelerates to 53 km/h. What is the change in the truck's kinetic energy
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