In gold foil experiment number of deflected alpha particles at angle 90° is 63 than number of alpha particle deflected at 120° is - a) 112 b) 42 c) 56 d) 28

A playground ride consists of a disk of mass M = 52 kg and radius R = 2.3 m mounted on a low-friction axle. A child of mass m = 28 kg runs at speed v = 2.5 m/s on a line tangential to the disk and...

A playground ride consists of a disk of mass M = 52 kg and radius R = 2.3 m mounted on a low-friction axle. A child of mass m = 28 kg runs at speed v = 2.5 m/s on a line tangential to the disk and...

A playground ride consists of a disk of mass M = 52 kg and radius R = 2.3 m mounted on a low-friction axle. A child of mass m = 28 kg runs at speed v = 2.5 m/s on a line tangential to the disk and...

How come when a group of people holding hands touch a fence, why does everyone receive an electric shock, surely the electricity should ground on the first person and he should be the only one electrocuted...

A uniform steel rope 250 m long hangs down a shaft. Find the elongation of the first 125 m at the top if the density of steel is 7840 kg/m3 and Young's modulus is 200 GN/m*.

The piston rod of a double-acting hydraulic cylinder is 20 cm diameter and 4 m long. The piston has a diameter of 40 cm, and is subjected to 10 MN/m2 water pressure on one side and 3...

Just where scientist should be to rate speed

A U-shaped tube , one of its branches is double the other in area , the length of each branch is 66 cm. ,if it is filled with water to its half , then oil is poured in the wide branch. Calculate the...

A U-shaped tube , one of its branches is double the other in area , the length of each branch is 66 cm. ,if it is filled with water to its half , then oil is poured in the wide branch. Calculate the...

I have a test for Physics tomorrow, and I was working on some practice problems, but I don't understand this question. I was wondering if someone could show me how to work it out? Thanks!   Question: Two...