When a mass of air expands, which of the following is most likely to happen?::The air warms up.::The air cools down.::The air stays at the same temperature.::The air contracts.
Which of the following would feel hottest to the touch if one end were placed in a pot of boiling water?::A wooden spoon::A metal fork::A plastic knife::A plastic cup
A lever lifts 300 lb with an effort of 60 lb. What is the mechanical advantage?::3::4::5::8
In a class 1 lever with an MA of 4, if the effort distance measures 8 ft, how long is the load distance?::2 ft::4 ft::8 ft::16 ft
Water is flowing into a tank at the rate of 180 gallons per minute. However, the tank has a leak, and water is leaking out at the rate of 2 gallons per second. How long will it take to add 120 gallons?::1 min::2 min::3 min::4 min
Water is flowing from a 3-inch pipe into a 1-inch pipe. Which statement is true?::Pressure is lower in the 3-inch pipe.::Pressure is higher in the 1-inch pipe.::More water is passing through the 3-inch pipe than through the 1-inch pipe.::The same amount of water is passing through every part of the piping system.
Gear A, with 18 teeth, meshes with gear B, which has 12 teeth. When gear A rotates 3 times, gear B will rotate::3 times.::4.5 times.::6 times.::9 times.
What is the advantage of using triangle shapes in constructing a bridge?::Triangles are sturdier than other shapes.::Triangles are very flexible.::Triangles are inexpensive to manufacture.::Triangles are attractive to look at.
Which formula will calculate the mechanical advantage of a lever?::Load/effort::Effort distance/load distance::Both A and B::Load × effort
A screw has 20 threads per inch. How many full turns of the nut are required for the nut to travel 1.5 inches?::15 turns::20 turns::25 turns::30 turns
