A solenoid is built with 870 turns uniformly distributed over a length of 0.390 m to produce a magnetic field of magnitude 1.00 * 10-4 T at its center. What is current necessary for this to happen? 17.4 mA 35.7 mA 74.9 mA

Richard wrote a list of the advantages of using any one of the six simple machines. His list is below. Which statement about simple machines is not correct? -Some simple machines produce an output force greater than the input force.

If electrons of energy 12.8 ev are incident on a gas of hydrogen atoms in their ground state, what are the energies of the photons that are emitted by the excited gas?

One of planets known to have rings is A. Saturn B. Venus C. Mars D. Mercury

To extend the electrical system between the main panel and the secondary panel, the electricians used A. Receptacles B. Circuit breakers. C. feeders. D. insulators

A car weighing 15,000 n is speeding down the highway at 90 km/h. what is its momentum?

A 3.7 kg block is pushed along a horizontal floor by a force modifyingabove upper f with right-arrow of magnitude 25 n at a downward angle θ = 40°. the coefficient of kinetic friction between the block and the floor is 0.26.

When one object heats another, does the temperature increase of one object always equal the temperature decrease of the other object? Explain

Add the following displacement vectors: 12 m south and 15 m 55° E of N?

And electric current is produced by which of the following processes? A. Electrical resistance B. Transfer of protons C. Convection currents D. Electromagnetic induction

The basic building block of life is