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Which of the following has greater kinetic energy?
A10 g meteor hurtling through the Earth's atmosphere at 5.0 km s-1,
A 65 kg jogger running at 5.0 m s-1.

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)