A stuntman jumps from the roof of a building to the safety net below. How far has the stuntman fallen after 2.3 seconds? A. 25.9 m B. 21.2 m C. 9.8 m D. 11.3 m

Which of these observations would show a chemical matter? choices are C. Lime juice will burn your tounge D. Glass will break when it's dropped

A paleontologist measures the ratio of carbon-14 to carbon-12 in a fossil skull found at a site. What technique is he using and for what purpose? a. using alpha emission to determine the structure of the skull b.

An asteroid is discovered in a nearly circular orbit around the Sun, with an orbital radius that is 3.83 times Earth's. What is the asteroid's orbital period T, its "year," in terms of Earth years

The atoms have changed over time. Scientists think this is wrong. Why? A) The nucleus is the center of an atom B) An atom is a solid material C) Electrons have a negative charge D) Electrons are arranged in layers

What cannot be used to dry utensils?

On a frictionless air track, cart A hits cart B moving at a velocity of 2 meters per second to the right. Which answer predicts what will happen?

Label 1a lies on the rim of a large crater, and 1b lies on the rim of a smaller one. Which crater must have formed first?

Which hybridization schemes allows the central atom to form more than four bonds?

A straight wire in a magnetic field experiences a force of 0.017 N when the current in the wire is 1.1 A. The current in the wire is changed, and the wire experiences a force of 0.077 N as a result. What is the new current

A girl pushes a cart with a force of 10 N. if the cart has a mass of 5 kg, what is its acceleration?