Which is harder, air tight or water tight seals?

The voltage entering a transformer's primary winding is 120 volts. The primary winding is wrapped around the iron core 10 times. The secondary coil is wrapped around the core 4 times. What is the voltage leaving the transformer?

A skydiver is descending with a constant velocity. Consider air resistance. Diagram the forces acting upon the skydiver

If a train is slowing down, it is accleration? better word for isn't

If 80 joules of work were necessary to move a 5 newton box, how far was the box moved?

Which statements does the Second Law of Thermodynamics support? 1. The usable energy in the universe is decreasing. 2. The usable energy in the universe is increasing. 3. The energy of the universe is being destroyed. 4.

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission

Why is it possible to throw a 0.145 kg baseball much further than a 7 kg bowling ball?

What is the name of the force that opposes or slows down the motion of objects