Physics Answers

Find the velocity of a recoil of a gun of mass 5 kg from which a bullet of mass 10 g is fired at a velocity of 250m/sec-1

A uniform rod 8m long weighing 5kg is supported horizontally by two vertical parallel strings at P and Q, and at distances of 2m and 6m from one end. Weights of 1kg, 1.5kg and 2kg are attached at distances of 1m, 5m and 7m respectively from the same end. Find the tension in each vertical string.

An ideal gas at temperature T0 is slowly compressed at constant pressure of 2 atm from

a volume of 10 liters to a volume of 2 liters.

Then the volume of the gas is held constant

while heat is added, raising the gas temperature back to T0.

Calculate the work done ON the gas. 1 atm

= 1.0×105 Pascals and 1 liter = 0.001 m3

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Light travels through an optical fiber (n=1.44) until it reaches the fiber's end and emerges into air. What is the angle of refraction outside the fiber if the angle of incidence on the end of the fiber is 25 degrees?

Light travels through an optical fiber (n=1.44) until it reaches the fiber's end and emerges into air. What is the angle of refraction outside the fiber if the angle of incidence on the end of the fiber is 25 degrees?

Speed Racer accelerates from rest at a constant rate of 6.5 m/s2. How fast will the racer be going at the end of 8 s?

water flow at a rate of 0.25 cm³/min in a horizontal pupe of varying cross sectional areas.Calculate the velocity of the water at a section where the rafius of the pupe is 6cm and (b) at a section where the rafius is 9cm

Calculate the rate of heat conduction out of the human body, assuming that the core internal temperature is 37.31 ºC, the skin temperature is 33.49 ºC, the thickness of the tissues between averages 1.46 cm, and the surface area is 1.27 m². (skin = 0.37W/m⋅°C)

An object falls from a high building and hits the ground in 9.0 seconds ignoring air assistance what is the distance that it fell

The same resistors are arranged in series 3ohms,4ohms and 11ohms.What is the total resistance of the series combination