Which of the following is a physical change? adding acid to milk to form sour cream, adding enzymes to milk to form cheese, adding bacteria to heated milk to form yogurt, adding sugar to milk to form sweetened milk

Which list gives the proper sequence of energy changes that occur in a hydroelectric plant? The mechanical energy of the turbine rotates the generator parts The turbine blades capture the kinetic energy of the water Electrical energy is transferred

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

Does the system's kinetic energy increase, decrease, or stay the same? or is there not enough information to tell?

A billiard ball with a mass of 0.15 kg has a velocity of 5 m/s. It strikes the bumper of the table perpendicularly and bounces straight back with a velocity of 3 m/s. The ball underwent a change in momentum equal to

A 100-N force has a horizontal component of 80 N and a vertical component of 60 N. The force is applied to a cart on a level frictionless floor. The cart starts from rest and moves 2.0 m horizontally along the floor due to this force.

What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2? A. 0.25 N B. 49 N C. 196 N D. 748 N

When two or more pure substances are blended together the result is a?

10 PTS. A resistor has a value of 2.2 x 10⁵ Ω ± 20%. What is the range of possible values for this resistor?

Describe 3 uses of radioactivity isotopes

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.