Which waves require a medium for transmission

A 1500 kg car traveling at 90.0 km/h toward the east suddenly collides with a 3000 kg car traveling at 60 km/h toward the south. The two cars stick together after the collision. What is the speed of the cars after collision?

The thermal conductivity of a cement is 0.168 British thermal units per foot hour degree Fahrenheit [BTU divided by (ft h Superscript o Baseline Upper F) ]. Convert this value in units of watts per meter kelvin [Upper W divided by (m Upper K) ].

What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?

Bullets bounce from Superman's chest. Suppose that Superman, with mass 104 kg, while not moving, is struck by a 3.93 g bullet moving with a speed of 855 m/s. The bullet drops straight down with no horizontal velocity.

Calculate the amount of charge travelling through a car battery when a current of 800.00 A is produced for 1.2 min.

Why arent insulators allowed in operating rooms

What does Kepler's second law state? A. Planets travel in ellipses. B. Planets sweep equal areas in equal times. C. A planet's apparent backward movement is termed retrograde motion. D.

Why do charges build up in a cloud

How does the wave model of electrons orbiting the nucleus account for discrete energy values?

An ecosystem is all the populations of organisms that live together and A. the microorganisms that depend on them. B. the organisms that generate energy from sunlight. C. the physical factors with which they interact. D.