Wha is the smallest particle of an element

If the density of pure copper is 8.89g/cm3 (at 20•c), calculate the volume of a copper brick with a mass of 4.5kg

Diffraction is the bending of light as it slows down in a new medium. O True O False

Why is the escape speed for a spacecraft independent of the spacecraft's mass?

2. An automobile with an initial velocity of 6.3 m/s to the right accelerates uniformly at the rate of 3 m/s2 to the right. What is the final velocity of the automobile after it travels 52 meters to the right?

Which of the following provides the best analogy for an electron in an atomic orbital? A. a cow grazing in a pasture B. a bird resting on a tree branch C. an ant crawling on the surface of a leaf D. a bee hovering around a bee hive

Oliver, whose mass is 65 kg, and Olivia, whose mass is 45 kg, sit 2.0 m apart in the physics classroom. What is the force of gravitational attraction between Oliver and Olivia

Which is an application of radio waves? allow doctors to see inside a person's body carry information between cell phones sterilize surgical instruments reheat or cook food quickly and easily

In history class, Juan learned about two sets of limestone carvings left in similar caves approximately 5000 years ago. Both caves are damp, but one cave has an average temperature of 45°C, while the other cave has an average temperature of 70°C.

A school bus full of students drives down the road. Because it is moving, it has 1. potential energy because it has the ability to take the students to school. 2. kinetic energy because it has the ability to take the students to school. 3.

How many additional valence electrons does fluorine need to have a full valence shell? A. One B. Two C. Eight D. Seven