A proton with mass 1.67 x 10−27 kg and charge +1.6. x 10−19 C, is sent with velocity 2.3 x 104 m/s in the +x direction into a region where there is a uniform electric field of magnitude 780 V/m in the +y direction. What must be the magnitude and direction of the uniform magnetic field in the region if the proton is to pass through undeflected?
Assume that the magnetic field has no x-component and neglect gravitational effects.

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

When does your body conduct current more readily?

What is the temperature in degrees celsius of a substance with a tempature of 49k