How much energy is needed to heat 55 Kg of water from 285 K to 360 K?

2. A can filled with sand has a mass of 0.65kg is swung overhead in a horizontal circle of radius 0.70m at a constant rate of 2.5 revolutions per second. Find the angular momentum of the rock.

What side of a topographic map would be easier to climb

A drag car takes off at the green light in a straight line. The car from 45 m/s to a complete stop in 9 seconds. What is its acceleration? Was it positive or negative?

What is the name of this insect and what is it's charteristics

A scientific blank is a proposed explanation that can be tested

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.

What two factors determine how fast weathering occurs

A sound that's produced by a single wave at a constant frequency and with no overtones is called