A train 300 m long is moving on a straight track with a speed of 82.8 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 17.5 km/h. Assuming constant acceleration, determine how long the train blocked the crossing. Disregard the width of the crossing.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

uranium fissions/breaks up giving out energy and neutrons

do you have a formula possibly