In order to make an electromagnet, you need a

Which best describes why a chemical change is different than a physical change? A. A chemical change results in a different state of matter, and a physical change results in a new substance being formed. B.

It is well known that bullets fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with bullets of mass m = 1.7 g at a rate of R = 165 bullets/min. The speed of each bullet is v = 380 m/s.

Calculations made using Celsius or Fahrenheit will not work for gas law calculations

Using coulombs inverse square law, if the charges of two similarly charged spheres increases, what would happen to the value of A?

An acid-base reaction will always produce water and which one of the following

The acceleration function (in m/s2) and the initial velocity are given for a particle moving along a line. a (t) = t + 6, v (0) = 3, 0 ≤ t ≤ 11 (a) Find the velocity at time t. v (t) = Correct: Your answer is correct.

A person with a mass of 75 kg skis from rest down a slope at an angle of 31 degrees. The coefficient of kinetic friction of his skis on the snow is 0.095. What is his acceleration?

A velocity vs. time graph for an object is shown. A graph titled Velocity versus Time shows time in seconds on the x axis, numbered 0 to 5, velocity in meters per second on the y axis, numbered 0 to 5. A line starts at the origin and ends at (5, 5).

Could someone explain how to calculate the frictional force if a side force is placed upon an object?

A wire that has a resistance of 1Ω is to be built from an aluminum block of volume 1 cm3 . How long is the wire going to be?