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

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...

A positive charge of 3 nC is placed at the origin and a positive charge of 6.75 nC is placed on the x-axis 5 cm. A positive test charge of 2 nC is placed on the x-axis a distance d, between...

A circuit comprises a 9 V battery which is connected in series to two 1 MΩ resistors that are in a parallel combination. The circuit is then completed by an open switch and two 50 nF capacitors...

physics question: A police car drives 230 km with a constant speed of 120km/h and another 170 km with a constant speed of 60km/h.

Combing your hair leads to excess electrons on the comb. How fast would you have to move the comb up and down to produce green light? (Assume λ = 569 nm.)

Just where scientist should be to rate speed

A force of 10 newton makes an angle of 30 degree with y axis. Find out the magnitude of x component.

The schwarzchild radius of a black hole containg 7.95 x 10 ^ 28 kg is ___ meters

What can be said about the total energy and work if we looked at the system as the ball + earth instead of just the ball.

Describe how changing the fluid density, drag coefficient, and area of the ball affect the Kinetic energy of the ball?

what speed does the block slide across the table?

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...