A car travels 400 km in 5 hours. what is the average speed of the car (in km/hr) ?

Why does water wet the glass while mercury does not

A rock has a mass of 5.00kg on the moon. What is the mass of the rock on the earth

The apparent backward movement of a planet is called A. Kepler's first law of motion. B. heliocentric motion. C. eccentricity. D. retrograde motion.

The major manufacturing companies in a small, less-developed country have decided to jointly build hospitals in rural areas in the country where they assemble their products.

The volume of a fixed mass of an ideal gas is doubled while the temperature is increased from 100 K to 400 K. What is the final pressure in terms of its initial pressure? a. 2 Pi b. 3 Pi c. 4 Pi d. 1/2 Pi

What is normal distribution in statistics?

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission