Ga proton moves at 3.60 105 m/s in the horizontal direction. it enters a uniform vertical electric field with a magnitude of 9.40 103 n/c. ignore any gravitational effects. (a) find the time interval required for the proton to travel 4.00 cm horizontally. ns (b) find its vertical displacement during the time interval in which it travels 4.00 cm horizontally. (indicate direction with the sign of your answer.) mm (c) find the horizontal and vertical components of its velocity after it has traveled 4.00 cm horizontally.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Why should seat belts not be mandatory quick plz