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A potential difference of 14.0 V is applied across a wire of cross-sectional area 5.01 mm2 and length 745 km. The current passing through the wire is 7.242×10-4 A.
a) What is the resistance of the wire?
b) What type of wire is this?
what would the image distance be (pay attention to sign)? cm d. Could the new image be projected on a screen?
A point source of light is located at the bottom of a steel tank, and an opaque circular card of radius 5.7 cm is placed over it. What is the index of refraction of the fluid
With a particular grating a doublet of the two wavelengths 731.3 and 732.1 nm is viewed in the third order at 9.3° to the normal, find the grating spacing in nanometers
A slingshot fires a pebble from the top of a building at a speed of 20.00 m/s. The building is 28-m tall. Ignoring air resistance, find out the speed with which pebble strikes the ground when the pebble is fired (a) horizontally (b) vertically str..
The coefficient of kinetic friction between the block and incline is = 0.45. The mass of the spring is negligible.
A cooling fan is turned off when it is running at 880rev/min . It turns 1000 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant
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
A group of hikers hears an echo 5 s after shouting. If the temperature is 16.0°C, how far away is the mountain that reflected the sound wave.
The electric field has been measured to be horizontal and to the right everywhere on the closed box. All over the left side of the box E1 = 120 V/m, and all over the right, slanting, side of the box E2 = 250 V/m. On the top the average field is E3..
A 0.235-kg volleyball approaches a player horizontally with a speed of 14.9 m/s. What impulse is delivered to the ball by the player
A roller coaster, travelling with an initial speed of 15 meters per second, decelerates uniformly at -7 meters per second per second to a full stop. How far does the roller coaster travel throughout its deceleration.
A 2.20 kg frictionless block is attached to an ideal spring with forces constant 314N/m. At first the block has velocity -3.60 m/s and displacement 0.300-m.
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