Which of the following is a mixture:

a. air c. water

b. salt d. sulfur

The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all of the energy obtained from burning 1.21 lb of ethane (fuel value is 11.36 kcal / g) is used to heat 121.

a skydiver jumps out of a airplane traveling with a horizontal velocity of 394.3m/s she falls for 3.9 seconds before she opens her parachute how far has she traveled in the horizontal direction in this time

Which of the following is a part of a pair of scissors? a. inclined plane b. pulley c. screw d. wedge

What kind of charge does an isotope have?

What is one result of warming up your body's muscles before exercising?

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Warming in front of a fire while camping is an example of? A. Conduction B. Convection C. Radiation

In which medium would light travel the fastest? Question 21 options: a. across a room b. in a swimming pool c. through outer space d. through a railroad track

A 0.60 Kilo gram basketball poses on the rim of a basketball hoop that is 3.0 m high find the potential energy of the ball there (use G=10 N/KG.)

2. What was the role of women as industry increased? A. They gained the vote, B. They became industry leaders, e. They led the household D. They can for government office,