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A step-down transformer produced a voltage of 9.0 V across thesecondary coil when the voltage on the primary coil is 120 V. Whatvoltage would appear across the primary coil of this transformer if120 V was applied to the secondary coil? Show work.
When you ride a bicycle at constant speed, almost all of the energy you expend goes into the work you do against the drag force of the air. how much power does she expend as she cycles
Suppose a bullet of mass m = 6.77g is fired into a ballistic pendulum whose bob has a mass of M = 0.693kg. What was the speed of the bullet-bob combination immediately after the collision takes place
For gas storage, thick metal cylinders whith an internal volume of 25 litres are used; typical cylinders can safely maintain a pressure of 180 atm. how many moles of gas can such a cylinder hold
an electron is initially at rest in a uniform electric field of intensity 1400 nc.find the followinga its acceleration
a laser having an internal loss per round-trip of 0.015 when pumped at three times threshold has an output power of 4w.
A simple magnifier of refractive power 15.0 D is used to observe a beetle on a student's desk. where is the image formed relative to the lens
What is the minimum time necessary for crossing.
A ball having a mass of150 g strikes a wall with a speed of4.8 m/s and rebounds with only 50% ofits initial kinetic energy. What is the speed of the ball immediately after rebounding
how many electrons n does it take to make a charge of -1.0 c? a current of 1.2 a passes through a wire for 1.3 minutes.
A current travels northwards along a power line, in the downwards magnetic field of the earth. In which direction will the magnetic force on the wire be directed
A 18.0 kg block is being pushed up a ramp by a force FP = 150 N acting horizontally. Determine the work done on the block by the frictional force
A baseball is thrown with an initial velocity of 20 m/s along the horizontal axis and 15 m/s along the vertical axis. The ball soon reaches the highest point, what is the speed at the point? (ignore air friction) Can you give me an explanation as to ..
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