Wegener named the supercontinent Pangaea, which means

If a wave has a low frequency, what does the wavelength look like? Question 4 options: short long it will change every second wavelength won't exist

Dust and gas are pulled together by the force known as what?

What is the definition for chemical change

Surface temperature of planet mars range from - 89C to - 31C Express this temperature rang in Kelvin.

A car of mass 1000kg is moving at a speed of 20m/s. It's brought to rest at a distance of 50m. Calculate the net force acting on the car.

What is tiny holes on the surface of a plant?

How is aperture measured? What do the measurements mean?

The mass of the Sun is 1.99 * 1030 kg. Jupiter is 7.79 * 108 km away from the Sun and has a mass of 1.90 * 1027 kg. The gravitational force between the Sun and Jupiter to three significant figures is * 1023 N.

You measure the magnetic field of a long, current-carrying wire to be B is equal to start fraction 50 times mu naught over pi end fraction at a distance of r = 7.5 cm. How much current is running through the wire?

In any food chain or web, the original source of energy is