In a pipe with a diameter d = 50 mm flows a stream of water having the speed v= 1,6 m/s. Calculate the flow rate in l/min

Well in that case, since an object moves with a constant velocity, there will be no acceleration as it is not increasing in speed.

They coasters are in tear-drop form because of physics. if the ride was in a complete circle, how would the coaster get into the loop, let alone get out of the loop? also, the reason why most coasters are in tear-drop form is because of acceleration. the steeper the turn, the faster the ride.

Left and right, basically as long as the charge is in line with the field then it can’t except any force on the charge because the equation b*i*l sin (angle) basically the angle would be zero making total force zero.