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One end of an iron poker is placed in a fire where the temperature is519°C, and the other end is kept at a temperature of 26°C. The poker is 1.2m long and has a radius of 5.0 multiplied by 10-3 m. Ignoring the heat lost along the length of the poker, discover the amount of heat conducted from one end of the poker to the other in 5.0 s.
A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of 0.253 mL/s
A 31.5 cm focal length converging lens is 20.0 cm behind a diverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.50 m/s on a smooth, slippery surface. The 22.5-g arrow is shot with a speed of 35.0 m/s and passes through the target, which is stopped by the impact. Wh..
A block of mass 12 kg slides from rest down a frictionless 35 degree incline and its stopped by a strong spring with k= 3x10^4 N/m. what is the total energy of block initially
if 533 what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance
suppose that 1.00 g of hydrogen is separated into electrons and protons. suppose also that the protons are placed at
A rotating merry-go-round accelerates uniformly from rest to make one complete revolution in 2s. what is the magnitude of her total acceleration at t = 3s
string under a tension of 50.5 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.3 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
A puck (mass = 0.3 kg) slides without friction on a horizontal plane. It is attached by a light string (length = 1 m) to a ring on a peg. find the tension in the string as the puck revolves around the peg
If each rock strikes the fixture travelling at 10.0 {rm m}/{rm s} horizontally and rebounds at 2.00 {rm m}/{rm s} backwards, how high above the lowest point does collision make your light fixture swing?
Suppose you are myopic (nearsighted). You can clearly focus on objects that are as far away as 50.2 cm away. What would be the refractive power (in diopters - do not enter units) for your prescription
a an electrostatic field line is a continuous curve. that is a field line cannot have sudden breaks. why not?b explain
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