In regions where few species existed before or where species were wiped out what occurs?

Paco rode his skateboard up a ramp for a distance of 3.8 meters. If the ideal mechanical advantage of the ramp is 2, how far above the ground was Paco?

100.0 g of a 4.0^°c water is heated until it's temperature is 37 °c. if the specific heat of water is 4.18 J/g°c calculate the amount of heat energy needed to cause this rise in temperature.

The air temperature over a lake decreases linearly with height after sunset, since air cools faster than water. The mean molar mass of air is M=28.8*10-3kg/mol. The questions are: If the temperature at the surface is 28.

Initially a wheel rotating about a fixed axis at a constant angular deceleration of 0.7 rad/s 2 has an angular velocity of 0 rad/s and an angular position of 8.8 rad. What is the angular position of the wheel after 2.7 s? Answer in units of rad.

You accidentally drop a book down a stairwell. Assuming no air resistance, how fast will the book be moving after 0.75 seconds?

Which of the following conditions is not necessary to observe an interference pattern between two sets of waves? A) The waves must have the same wavelength. B) The waves must have a constant phase difference.

Calculate the change in velocity of 70 kg object being pulled with 1000N force force 10 s

Which reaction obeys the law of conservation of mass?

Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called a. asteroids. b. meteors. c. meteorites. d. meteoroids.

What is the conversion from 1.2 mm to m