What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?
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December 2022
When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this?
A ______ turns about a fixed point called a fulcrum.
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December 2022
What is the correct order of energy conversions associated with a power plant that uses nuclear fission reactions? 1 thermal to nuclear to mechanical to electrical 2 thermal to mechanical to nuclear to electrical 3 nuclear to mechanical to electrical to thermal 4 nuclear to thermal to mechanical to...
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December 2022
A 17 kg box sitting on a shelf has a potential energy of 350 J. How high is the shelf? Round your answer to the nearest whole number.
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December 2022
A conveyer belt moves a 40 kg box at a velocity of 2 m/s. What is the kinetic energy of the box while it is on the conveyor belt?
What is the unit of measure for energy?
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December 2022
Why are we able to use nuclear energy for practical purposes? 1 The reactions are controlled to regulate energy output. 2 The reactions are uncontrolled for maximum energy output. 3 All of the products are fed back into the reaction to keep it going. 4 All of the products...
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December 2022
Nuclear energy is currently used in which vehicles? Check all that apply. 1 cars 2 submarines 3 spacecraft 4 airplanes 5 aircraft carriers
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December 2022
Why is fusion nuclear energy currently not widely used as a source of electricity? 1 Fusion reactions have not yet been achieved. 2 Fusion reactions cannot be controlled. 3 Fusion reactions require very high temperatures and pressure. 4 Fusion reaction energy cannot be converted into electricity.
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December 2022
An inclined plane is 30 meters long and 2 meters high. What is the mechanical advantage of the inclined plane?
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December 2022
Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which then generates an electric current. This electric current, in turn, allows the car to move. Which shows the correct order of energy transformations that take place in a solar-powered...
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December 2022
Which activity directly converts energy from the Sun into chemical energy? 1- a snake lying on a sunny rock to keep warm 2- a rabbit using energy from food it has eaten to run 3- a bean plant making its own food to grow 4- a person burning firewood...
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December 2022
Which statement is an example of the law of conservation of energy? 1- A soccer ball eventually stops because its energy disappears. 2- When a light bulb is turned on, electrical energy is converted to light and heat. 3- An automobile engine burns gasoline to converts its chemical energy to...