The first elemen on the periodic table is

A guitar string with mass density μ = 2.1 * 10-4 kg/m is L = 0.95 m long on the guitar. The string is tuned by adjusting the tension to T = 82.6 N. With what speed do waves on the string travel?

Gases in the first atmosphere came from

How is velocity and instantaneous speed alike

What is the measure of speed in a certain direction

Ben walks 500 meter from his house to the corner store. He then walks back towards his house, but continues 200 meters past his house to talk to a neighbor.

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3

A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of friction between the box and the floor is μ. At what rate does the child do work on the box?

What two qauntities must be known to calculate the density of a sample of matter

An element's atomic number is 38. How many protons would an atom of this element have?

What's are some forms of chemical energy