Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below. Potassium (K) : 1s22s22p63s23p64s1 core electrons valence electrons

During a storm, the power went out at Bailey's house. She had no electricity. What could she use as an alternate form of electrical energy? A) candles B) a fire in the fireplace C) a battery-operated lamp Eliminate D) a light in the refrigerator

1. Identify which of the following will not increase the current induced in a wire loop moving through a magnetic field. a. increasing the strength of the magnetic field b. increasing the speed of the wire c.

All of the following are types of galaxies except Spiral Elliptical Irregular Spherical

How is power defined? A. the quantity of work accomplished. B. the direction of the work. C. the total distance an object is moved. D. the rate at which work is accomplished

Tina wants to install one unit that both heats and cools. Which should Tina install?

If an ant were scaled up to the size of an elephant, the ant would be

A 4.0 kg food pack was dropped from a height of 200 m by a helicopter during flood relief operations. At what velocity will the food pack be falling halfway to the ground?

The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true? The mechanical waves reach Earth, while the electromagnetic waves do not.

A 3-kg mass is in free fall. What is the velocity of the mass after 7 seconds?

How does the role of blood protect the body