How many years does it take for 1/4 of a carbon-14 atom to decay?

What does uniformitarianism tell us about processes at work on Earth's surface today?

Intuition might tell us that rough surfaces on clothing would inhibit the speed of an Olympic athlete. Why is this line of thinking not true in some cases? How can controlled roughness actually promote speed?

True or False? The molecules in a solid have * more * thermal energy than the molecules in a gas?

1. A wave has a wavelength of 14 mm and a frequency of 17 Hertz. What is its speed? 2. What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 11 Hz?

Which phase of matter contains particles that split into ions and electrons?

What is the product of 3.15 m and 2.006 m with the correct number of significant figures?

Consider what happens at the moment when the block leaves the surface of the globe. Which of the following statements are correct? - The net acceleration of the block is directed straight down.

A mechanic pushes a 3.00 ✕ 103-kg car from rest to a speed of v, doing 4,680 j of work in the process. during this time, the car moves 26.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Explain how latitude determines wind patterns

What is the difference between contact forces and forces that act through a force field?