Which of these changes do ot involve forming or breaking chemical bonds?

A) burning and melting

B) rusting and cutting

C) burning and digesting

D) boiling and melting

A 980 kg car uses a braking force of 9600 N to stop in 1 seconds. (a) What impulse acts on the car? (b) What is the change in momentum of the car? (c) What was the initial speed of the car? (Use only two decimal places.)

Which of the following items involve a wedge? Check all that apply. A. A chisel B. An axe C. A knife. D. A hairbrush

To prevent contamination laundered linens should be kept A. the closet B. In the locker room C. In the restroom D. Under an open stairwell

The addition of electron shells results in shielding of electrons from the nucleus.

If a ball end mill cutter's stepover is kept at a fixed value but the diameter of the tool is increased, the scallop height increases as a consequence. Select one:a. Trueb. False

3. A hydraulic lift is used to jack a 950-kg car 45 cm off the floor. The diameter of the output piston is 23 cm, and the input force is 375 N. a. What is the area of the input piston? (10pts) b.

An electric current in a metal consists of moving (A) Protons (B) neutrons (C) electrons

How does the idea of rotating disk in the nebular model explain certain observed celestial phenomena?

If a small child were to release a balloon into the atmosphere, what would happen to the size of the balloon as it makes it way higher in the sky?

Is a aluminum pie plate an element