A spring-loaded marble launcher is used to launch a marble straight up. If 30 J of work is done to load a 0.15 kg marble into the spring, how fast will it travel (in m/s) once it reaches 1m above the launcher?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

How much hereditary information is contain in a human sex cell