Which are the main regions of the periodic table?

A ball player hits a home run, and the baseball just clears a wall 21.0 m high located 130.0 m from home plate. The ball is hit at an angle of 35.0° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.

A boy with a mass of 66 kg sits on a see-saw, 1.2 meters from the fulcrum. How far from the fulcrum will a 44-kg girl need to sit to balance the boy?

1 which body contains the majority of the mass in the solar system earth Jupiter the moon the Sun 2 what keeps the objects in the solar system such as planets orbiting around the Sun the force of gravity the Galaxy exerts on all objects within it

The principle of superposition states that in undisturbed rock layers, the youngest layer of rock will be on the bottom, while the oldest layer will be on the top. T F

The heaviest invertebrate is the giant squid, which can have a weight of about 1.7 tons spread out over its length of 68 feet. what is its weight in newtons?

You want to place a mirror at a blind turn on the staircase in your house. Which would be best suited for this purpose? a. flat mirror b. plane mirror c. convex mirror d. concave mirror

Which will have the greatest effect on power consumption A.) add more circuit brakes and fuses B.) turn on all electric devices in a circuit C.) turn on only the electrical devices that use the most watts D.

13. Which best summarizes the change in number and size of microcontinents during the Proterozoic? a. the number of microcontinents increased and the size increased b. the number of microcontinents increased and the size decreased c.

What is the 3d model of oxygen molecule

If you need to drive from Dallas, Texas, to Salt Lake City, Utah, (about 1500 miles), and the speed limit is 60 miles per hour most of the way, what is the least amount of time you will need? A. 4 hours B. 25 hours C. 2.5 hours D. 90,000 hours