Recent content by Sanjay101

1. Magnetic Field and E Fields

1. An electron has an initial velocity of (11.0 j + 16.0 k) km/s and a constant acceleration of (2.00 1012 m/s2) i in a region in which uniform electric and magnetic fields are present. If B = (400 µT) i, find the electric field E. [B] i. [B] j...
2. Current Density of protons

o, i cannot believe i mistook that info. Thanks.
3. Current Density of protons

Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 8.90 cm-3 and their speed is about 490 km/s. (a) Find the current density of these protons. (b) If Earth's magnetic field did not deflect the protons, what total current would Earth receive? For...
4. Current Density and Current

Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 8.90 cm-3 and their speed is about 490 km/s. a. Find the current density of these protons. b. If Earth's magnetic field did not deflect the protons, what total current would Earth receive?
5. Coulombs Law and electrostatic force

i maybe missing something obvious, but i dont see why it is 3/8.
6. Centripetal Acceleration of astronaut

Anyone know how to do this? An astronaut is rotated in a horizontal centrifuge at a radius of 8.0 m. (a) What is the astronaut's speed if the centripetal acceleration is 7.0g? (b) How many revolutions per minute are required to produce this acceleration? (c) What...