When a device is use in a circuit in which the voltage is 81v, the current following though the device is 3A what is the resistance of the device

What is Nothing. (sorry i have been wondering this for a very long time)

Where do scientists believe the missing carbon is going? Why are they not sure?

The formula Sequals16tsquared is used to approximate the distance S, in feet, that an object falls freely from rest in t seconds. The height of a building is 1190 feet. How long would it take for an object to fall from the top?

Suppose that 2 j of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. how much work (in j) is needed to stretch it from 35 cm to 40 cm?

A triangle can have at most how many right angle?

The planet earth orbits around the sun and also spins around its own axis. 33% part (a) calculate the angular momentum of the earth in its orbit around the sun in kg • m2/s

An electron experiences a magnetic force of magnitude 4.60 x 10^-15 N when moving at an angle of 60.0° with respect to a magnetic field of magnitude 3.50 x 10^-3 T. Find the speed of the electron.

If you jump vertically while inside a fast-moving train that is slowing down, you land: a. a bit behind your original position. b. at your original position. c. a bit ahead of your original position.

In the sky, you see a red star and a blue star. Which one is hotter? A. The red star B. They are probably the same temperature C. The blue star D. The answer will depend on how far away the stars are

Describe the relationship between force and mass when the acceleration of two objects remain constant