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The electricity received at an electricsubstation has a potential difference of 2.80 105 V. Ifthe required output is 440 V, what should be the ratio of the turns of the step-down transformer?
The coefficient of kinetic friction between the block and incline is = 0.45. The mass of the spring is negligible.
a lead ball of mass 18.0 kg is dropped from rest from a height of 23.0 m above the ground, Write in vector format the acceleration of the ball
Sarah throws a ball too hard so it is over Julie's head when it reaches Julie's horizontal position, What is the speed of the ball when it leaves Sarah's hand
a 0.40 kg mass attached to the end of a string swings in a vertical circle of radius 1.8 m. at an instant when the
Calculate the time it takes the sled to travel 21 m down the slope and draw a free-body diagram for the sled sliding down the slope.
Find out the average magnitude of the induced emf if the change in shape occurs in 4.24 {rm s} and the local 0.120-{rm T} magnetic field is perpendicular to the plane of the loop.
A solid cylindrical disk has a radius of 0.19 m. It is mounted toan axle that is perpendicular to the circular end at its center. What is the mass of the disk
Find the distance from the positive plate
A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20 deg. above the horizontal. How far does the jumper jump?
Presume the child remains horizontal during the fall to the floor. Note that a more complicated fall could result in a head velocity greater or less than the speed you calculate.
A current of 12.0 mA is maintained in a single circular loop with a circumference of 3.70 m. find the magnitude of the torque exerted by the magnetic field on the loop
The drawing shows an equilateral triangle, each side of that has a length of 2.00 cm. Point charges are fixed to each corner, as shown. The +4.0 C charge experiences a net force due to the charges qA and qB. This net force points vertically downwa..
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