For convection to occur,

A. dark objects are required to absorb energy.

B. substances must be in contact with each other.

C. particles must be able to flow within a substance.

D. heat must transfer from an area of less energy to more energy.

Marie is puzzled by her findings she has done several meticulous calculations and has gotten the numbers. 37 rad,.89 rad and 1.65 rad. she was expecting. 90 rad each time. she has been which of the following? a. neither precise and accurate b.

When scientists publish experimental results their results are often criticized by other scientists how is this process a source of strength of science

At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. In calm waters, the scale reads 182lbs. During the storm, the crewman finds a max reading of 225lbs and a minimum reading of 138lbs A.

A turtle crawls at a constant speed, moving 4.77 m in 19.5 s. What was the turtle's velocity?

How does the circulatory system work together to keep your body healthy and maintain homeostasis?

Which method would you use to find the volume of an irregular shaped object?

A step up transformer has a primary coil with 100 turns and a secondary coil with 25 turns if the input voltage in the primary coil is 40 volts what is the output voltage reduced to in the secondary coil A) 20 volts B) 35 volts C) 4 volts D) 10

An instrument used to measure atmospheric pressure is called a

A 200-kg boulder is 1000-m above the ground. what is its potential energy?

The law of reflection states that if the angle of incidence is 81 degrees, the angle of reflection is ___ degrees.