An electric device, which heats water by immersing a resistance wire in the water, generates 50 cal of heat per second when an electric potential difference of 12 V is placed across its leads. What is the resistance of the heater wire?

What the difference between geographic north pole and magnetic north pole

In his science project, Ben explained the pyramid of energy with an example of the population of birds and the insects they feed on. Can he invert the pyramid to show the flow of energy?

What was the average temperature of Earth in 1860?

If a plane ✈️ traveled west for 4.0 hours and covered a distance of 4,400 kilometers what is the velocity?

Imagine the first Olympic Games conducted on the moon in a specially designed dome. state and explain which sports would produce new records and which would not

A crude approximation for the x component of velocity in an incompressible laminar boundary layer is a linear variation from u = 0 at the surface (y = 0) to the freestream velocity, U, at the boundary-layer edge (y = δ).

Why did dad leave mom?

Sal drew the electron dot diagram of an aluminum atom as shown. How should Sal correct his diagram? He should add five more dots so that the atom obeys the octet rule. He should add ten more dots so that all thirteen electrons are shown.

What uses electricity

How do the elements in the Noble Gas family compare?