# Physics

An electron (m=9.11×10-31 kg) moves in a circle whose radius is 2.00 x 10-2 m. If the force acting on…

An electron (m=9.11×10-31 kg) moves in a circle whose radius is 2.00 x 10-2 m. If the force acting on the electron is 4.60×10-14 N, what is its speed?

Q1) Romeo is pining away wanting to talk to Julie

Q1) Romeo is pining away wanting to talk to Juliet once more. He decides to go below her window and throw rocks at the window to wake her. Romeo stands 6.0 m horizontally from Juliet’s window and 9.5 m vertically below the window. Romeo wants the rocks to hit the window with only a horizontal […]

Homework5

Hi, I need help to solve my homework.

How does one derive equations to get to this equa

How does one derive equations to get to this equation? g(p1-p2)T / µ(R-1)t where µ is viscosity p1 is density of sphere p2 density of liquid T is temperature t is time R is radius its for an IA

In circuits, Ohm’s law implies that:

In circuits, Ohm’s law implies that:

Write the expression for pressure exerted by a li

Write the expression for pressure exerted by a liquid?

1-The concept of thermionic emission is the basis

1-The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current. The heat (energy) is transferred to the ‘free’ electrons of the metal which allow […]

A person standing at the edge of a seaside cliff

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 14 m/s. The cliff is 51 m above the water’s surface. The acceleration of gravity is 9.81 m/s With what speed does the stone strike the water? Answer in units of m/s.