How many places are there for electrons in the second shell of an atom?

Why do trains use steel wheels rather than rubber tires? A) Steel wheels provide more grip, making it easier to stop a train. B) Rubber tires don't provide enough friction to allow the train to move.

A fisherman casts a lure toward the river at an angle of 25° above the horizontal. The lure reaches a maximum height of 2.9 m above where it was cast.

Which of these temperatures is likely when a container of water at 20° C is mixed with water at 28° C?

As you hold book at rest in your hand two forces are being exerted on the book identify the force

A ball thrown horizontall at 22.2 m/s from the roof of a building lands 36.0m from the base of the building. How tall is the building?

What is the momentum of a 2 kg ball traveling at 2m/s

A constant force is exerted for a short distance on a block of mass that is initially at rest on a horizontal frictionless plane. This force gives the block a certain final speed v.

A football quarterback is moving straight backward at a speed of 3.00 m/s when he throws a pass to a player 20.0 m straight downfield. (a) if the ball is thrown at an angle of 25.

Simone is walking her dog on a leash. The dog is pulling with force of 34 N to the right and simone is pulling backward with a force of 16 N

An object moves with velocity v (t) = t^2-8t+7 a) write a polynomial expression for the position of the particle at any time t greater or equal to zero.