In the equation Δp=m (vf-vi), which quantity is considered to be constant?

One student did an experiment with salt water. The steps of the experiment are shown below. Pour half a cup of salt water into a pan. Keep the pan outside in the sun for a day. Allow all the water in the pan to evaporate.

How are electro magnets different from other magnets

What is one way you can ensure good oberservations when you do scientific work

Which of the following is an example of plasma?

If a system has 475 kcal of work done to it, and releases 5.00 * 102 kJ of heat into its surroundings, what is the change in internal energy of the system?

In otherwise empty space is a system of 4 particles, each of the same mass. The accelerations of the particles are as follows: a1 = ˆi a a2 = ˆj a 2 a3 = - (ˆi + ˆj) (2 a) a4 = (ˆi - ˆj) (3 a), where a > 0 is a constant.

How many electrons does a neutral atom of oxygen-18 have? 8 O 16.00 A. 8 B. 10 C. 18 D. 16

What is average velocity?

A bicycle moves from rest to 5 m/s in 5 sec. what is the acceleration of the bicycle

A proton moving in a region of a space does not experience any acceleration in the direction of motion.