In a potentiometer circuit a 1m long potentiometer PQ of resistance 10ohms is connected in series with a cell of e. m.f 9v with internal resistance 3 ohms calculate the p. d across PQ

Acar travels 40m in 8 seconds find the car speed

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)

Your teacher's car can go from rest to 25 m/s (≈55 mph) in 10 seconds. the car's velocity changes at a uniform rate. below is a quantitative velocity vs time graph that represents the motion of the car. determine the acceleration of the car.