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Total questions: 26583
How do electromagnets work?Popularity: 311
Which is heavier an equal volume water or gasoline?
Popularity: 273
What would happen if there was no electricity?
Popularity: 200
How many gallons are in a cubic gallon?
Popularity: 179
How many pounds does one gallon of water weigh?
Popularity: 135
How much does a gallon of ice weigh?
Popularity: 125
How does a solid state relay work?
Popularity: 117
What are wavefronts?
Popularity: 106
What is time?
Popularity: 85
How does the elevation and air pressure affect the boiling point of water?
Popularity: 75
What instrument is used to measure volume?
Popularity: 75
What is the weight of 10 liters of Alum?
Popularity: 72
Why is it when you suddenly stop a car people and packages fly forward a helium balloon inside the car goes backwards?
Popularity: 71
How many nuclear bombs were built in world war 2?
Popularity: 70
How much does one gallon of oil weigh?
Popularity: 69
How old is the Earth?
Popularity: 68
What are the names and uses of the various laboratory tools?
Popularity: 68
How much does one gallon of diesel fuel weigh?
Popularity: 67
How much does automotive oil weigh?
Popularity: 66
Why haven't chemists created a periodic table of compounds?
Popularity: 64
What is the proper formula used to calculate acceleration?
Popularity: 61
How many grams are equal to one cubic centimeter?
Popularity: 61
What instrument is used to find mass?
Popularity: 61
How many grams does a teaspoon of oil weigh?
Popularity: 60
How many quarters would it take to weigh one pound?
Popularity: 58
How many square feet are there in a room that measures 15 feet 1 inch by 10 feet 5 inches?
Popularity: 57
How much does ice weigh?
Popularity: 57
What is neutral buoyancy?
Popularity: 55
Does sound travel better through solid liquid or gas?
Popularity: 55
What was the first man-made object in space?
Popularity: 55
What is the measure of the force of gravity on an object?
Popularity: 53
When a radar gun says the pitch is 90 miles per hour at what point in the ball's travel to home plate is the radar gun measuring the velocity?
Popularity: 53
What are independent and dependent variables in science?
Popularity: 52
What are the functions of newton scale?
Popularity: 51
What is Ohm's law?
Popularity: 51
What are the laws of physics?
Popularity: 50
What is the formula for calculating the volume of a hexagonal shape?
Popularity: 50
Where might eletrostatic charge be a hazard?
Popularity: 49
Can density be used to identify a substance?
Popularity: 49
How do you make a weight scale?
Popularity: 49
Does sunlight reflected off a mirror increase the temperature of the sun-rays?
Popularity: 48
How much pressure can an egg take?
Popularity: 48
What is the charge and location and mass of a proton and a neutron and an electron in the atom?
Popularity: 48
How do airplanes fly?
Popularity: 48
How much does a gallon of antifreeze weigh?
Popularity: 48
How is radiation emitted from the body?
Popularity: 47
What is critical speed of steam turbine?
Popularity: 47
What is the relation between a ton and a kilocalorie?
Popularity: 47
Does a gallon of water weigh more than a gallon of beer?
Popularity: 47
Do peanuts explode in lemonade?
Popularity: 45
What is the force called when an object such as a Hot Wheels car performs a loop on a looped track and generates force against the surface?
Popularity: 45
How fast do things fall?
Popularity: 44
How many pounds of ice equal one gallon of water?
Popularity: 44
What are the steps to the scientific notation?
Popularity: 43
What is the origin of all the large moons around the Jovian planets?
Popularity: 43
Give one advantage of a scanning electron microscope over a transmission electron microscope?
Popularity: 42
Does electromagnetic flux flow through wood?
Popularity: 42
How much pressure will a 300-gallon water tank supply with an elevation of 30 feet?
Popularity: 42
How can light be defined in simplest form?
Popularity: 41
How is Specific Gravity defined?
Popularity: 41
What type of energy does a ball have when it is at the top of a ramp?
Popularity: 41
What is the retention of heat from the sunlight called?
Popularity: 41
What is a neutron?
Popularity: 41
How much does sea salt weigh per cubic foot?
Popularity: 41
What would happen if a disk one light second in circumference were to spin at 60 RPM?
Popularity: 40
How is energy stored in the dunking bird?
Popularity: 40
Why do people run before jumping instead of simply jumping in place?
Popularity: 40
What is amplitude?
Popularity: 40
What is before Alpha and after Omega?
Popularity: 40
What comes before Alpha?
Popularity: 40
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