The figure shows a zero-resistance rod sliding to the right on two zero-resistance rails separated by the distance l = 0.40 m. the rails are connected by a 10.5-ω resistor, and the entire system is in a uniform magnetic field with a magnitude of 0.750 t.

find the speed at which the bar must be moved to produce a current of 0.125 a in the resistor

Ahonda civic travels in a straight line along a road. its distance x from a stop sign is given as a function of time t by the equation x(t)= î± t2â î² t3, where î± = 1.53 m/s2 and î² = 5.50ã10â2 m/s3 .

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.