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Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. If the coil must carry a current of 10.00 A when a voltage of 1.80 102 V is applied across its ends, find the following. The required resistance of the coil is 18. What are the equations? What is the length of the wire you must use to wind the coil?
An astronomical telescope uses an objective power of +1.280 D. If the length of the telescope is 80.000 cm, what are power of the eyepiece
What was the bullet's speed as it left the barrel. A 1kg block rests against one end of a horizontal spring which is compressed by 10 $cm$.
Transverse waves travel with a speed of 18 m/s in a string under tension of 5 N. What tension is required for a wave speed of 27 m/s in the same string.
A power station delivers 520 kW of power at 12,000 V to a factory through wires with total resistance 3.0. How much less power is wasted if the electricity is delivered
Find an expression for the electric potential at the center. A proton is released from rest in a uniform electric field of magnitude 1.20×10^5 N/C. Find the speed of the proton after it has traveled.
An aquarium filled with water (n=1.33) has flat glass sides whose index of refraction is 1.52. What is the critical angle from the glass to the water
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 58.0?. Dog A exerts a force of 260N , and dog B exerts a force of 320N
A rectangular block of wood floats in a calm lake. Show that, if friction is ignored, when the block is pushed gently down into the water and then released
how high does it rise above the point of free.
A quantity of ideal gas at 10.0°C and 100 kPa occupies a volume of 1.20 m3. how much volume does the gas occupy
What is the period of oscillation of the scale? State your reply numerically in seconds.
One solenoid is centered inside another. The outer one has a length of 48.0cm and contains 6600 coils, What is the mutual inductance of these solenoids
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