Which of the following is most like the rotation of stars in the disk of the Milky Way?

The planets in our solar system

Cars moving at a constant speed on a circular race track

A DVD in a player

The tire of a car moving

Perid 4 of the periodic table contains the elements potassium, calcium, and copper. Which is least reactive?

object A is negative. object A and B attract. object B and C attract. object C and D repel. Object D and E repel. what are the charges of B, C, D, E

Two buckets contain water at 30 deegres C one contains 1kg of water and the other contains 2kg of water. State and explain whether the following quantities are the same or different for the water in the two buckets A. internal energy B.

A force F acts in the x - direction, its magnitude given by F = ax^2, where x is in meters and a = 5.0N/m^2 . Find the work done by this force as it acts on a particle moving from x = 0 to x = 6.0 m.

Heat transfer between two substances is affected by specific heat and the chemical composition of the substances. state of matter of the substances at room temperature. thermal equilibrium of the substances.

What is the relationship between the mass of the counterweight and the amount of work done on the projectile?

The steps in the formation of sedimentary rocks are listed below in an incorrect order. 1. Rocks are weathered. 2. The sediments are compacted together. 3. They are deposited in layers. 4. Small pieces of rocks are carried by water.

Which method would you use to find the volume of an irregular shaped object?

A step up transformer has a primary coil with 100 turns and a secondary coil with 25 turns if the input voltage in the primary coil is 40 volts what is the output voltage reduced to in the secondary coil A) 20 volts B) 35 volts C) 4 volts D) 10

An instrument used to measure atmospheric pressure is called a