Based on the periodic table above, which of the following elements is a metal?

A spacecraft is launched from Earth toward the moon. Where will the spacecraft be when the gravitational forces acting on it are equal? A. Closer to Earth than to the moon because the moon has greater mass than Earth. B.

Which telecommunications device is ideal for communication during natural disasters when regular telecommunication modes might not be functional?

Why do you think a pregnant woman needs more energy from food than a woman who is not pregnant?

What is the layer of the rocks and moon dust called A. regolith B. terrae C. maria D. craters

The container is filled to yh 350 ml mark water is observation or inference?

Shelly was surprised to learn the dwarf planet Pluto used to be considered a planet. What would have had to be true for Pluto to remain categorized as a planet? Pluto would need to have an atmosphere.

Two uncharged metal spheres, #1 and #2, are mounted on insulating support rods. A third metal sphere, carrying a positive charge, is then placed near #2. Now a copper wire is momentarily connected between #1 and #2 and then removed.

Which waves can travel through a vacuum? A) light waves Eliminate B) ocean waves C) sound waves D) mechanical waves

Select the statement that best describes gravity. Gravity is the force that draws objects closer to the Earth because of the positive or negative charge.

A cylindrical metal rod is 2.40 m long and 5.99 mm in diameter. The resistance between its two ends (at 20oC) is 1.38 * 10-3 Ω. (a) What is the material? (b) A round disk, 2.24 cm in diameter and 1.20 mm thick, is formed of the same material.