What kind of telescope uses only lenses?

A very famous scientist explains a recently observed natural phenomenon with a new theory. Should the new theory be considered valid?

Reginald slipped and broke his leg in his kitchen when he ran inside to grab a cookie. His mother had just mopped the floor. What is the reason for this? a. The water decreases the friction between the floor and the feet. b.

Does spilled milk have higher or lower entropy

Sabrina wants to get better at soccer. In order to do this, she has created a list of skills she will need to improve. Which skill should get the most of her attention in order for her to excel at soccer?

3. How are meteors and meteorites different?

A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

Charge: A piece of plastic has a net charge of + 2.00 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60 * 10-19 C)

How much heat is needed to raise the temperature of 6g of water by 18oC?

A proposed space station includes living quarters in a circular ring 50.0 m in diameter. At what angular speed should the ring rotate so the occupants feel that they have the same weight as they do on Earth?

Which transformation of energy occurs in a hydroelectric power plant? A. Potential energy to chemical energy B. Chemical energy to potential energy C. Chemical energy to Kinetic energy D. Kinetic energy to electrical energy F.