In an atomic model that includes a nucleus, negative charge is

A. concentrated in the center of an atom.

B. spread evenly throughout the nucleus.

C. concentrated at multiple sites in the nucleus.

D. located in the space outside the nucleus.

Which of these substances will form a basic solution in water? A. Ca (OH) 2 B. H3PO4 C. H2SO4 D. HCl

Electromagnets 23. To hold fire doors open, an electromagnet is switched on, generating a magnetic field If a solenoid is 2.00 cm long, has 400 turns, carries a current of 1.

Given the two sets, which statement is true? A = {1, 2} B = {1, 2, 3, 4}

How many newtons of force are presented by the following amount:3 kg * m/sec squared? Select the correct answer a) 6 newtons b) 3 newtons c) 1 newton

How many visible stars does How many visible stars Taurus "the bull" have

The engine that powers a crane burns fuel at a temperature of 1500 oC. It is cooled by air at a temperature of 20 oC. The crane is used to lift a 1000 kg steel girder 30 m into the air.

The portion of a light ray that falls on a surface is a/an

Give the definition for diffusion. (A) gas molecules mix unequally average distance between collisions (B) gas molecules escape from a container into a vacuum through a small hole (C) gas molecules mix equally (D) gas molecules spread out in a

As resistance goes up, what happens to the current?

1. A 0.828-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. a) Find the momentum of the electron. b) Find the kinetic energy of the electron.