The amount of potential energy of a 5.0-kilogram book that is moved to three different shelves on a bookcase would be 49 Joules ,73.5 Joules, and 98 Joules respectively.
Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total potential energy stored energy in the system which is represented by total potential energy.
Similarly, the total potential energy of the crane lift would be
PE = m*g*h
The potential energy of the book at 1.0 m is (5x9.8x1)= 49 Joules
The potential energy of the book at 1.5 m is (5x9.8x1.5) =73.5 Joules
The potential energy of the book at 2.0 m is (5x9.8x2)=98 Joules
Thus, the amount of potential energy of a 5.0-kilogram book that is moved to three different shelves on a bookcase would be 49 Joules,73.5 Joules, and 98 Joules respectively.
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False. The jet stream does not carry cold air to the tropics and warm air to the poles.
The jet stream is a high-altitude, fast-moving air current in the atmosphere that generally flows from west to east. It is caused by the temperature differences between the polar regions and the mid-latitudes.
In reality, the jet stream tends to separate cold polar air from warmer air in the mid-latitudes. It meanders and can have a significant impact on weather patterns, but its primary function is not to transport warm or cold air to the poles or tropics. Instead, it plays a crucial role in the development and movement of weather systems, affecting things like storm tracks and weather conditions in different regions.
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The jet stream does not carry cold air to the tropics or warm air to the poles.
The statement 'The jet stream carries cold air to the tropics and warm air to the poles' is false. The jet stream is a narrow band of strong wind in the upper atmosphere that flows from west to east. It generally moves air masses from west to east across the globe, but it does not carry cold air to the tropics or warm air to the poles. Instead, it helps distribute weather systems and influences the movement of storms.
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