Answer: The answer is A
Explanation: The bumper is the first part of an automobile to be impacted when in a head-on accident
Answer: It remains the same
Explanation:
The Conservation of Momentum principle establishes that the initial momentum must be equal to the final momentum :
(1)
In the case of the train, its initial momentum is:
(2)
Where is the mass of the train and is the initial velocity of the train
And, its final momentum is:
(3)
Where:
since we are told the mass of the train is doubled
since we are told the velocity of the train goes to half
Hence:
(4)
(5)
(6)
This means the momentum of the train remains the same.
Answer:
round object that orbits the Sun but lacks the ability to clear the neighborhood around is orbit.
Explanation:
It is true that a dwarf planet is a round object that orbits the Sun but lacks the ability to clear the neighborhood around its orbit.
Due to the size of a dwarf planet, it does not possess enough gravitational attraction or force to clear the orbit around it or other bodies.
One of the notable dwarf planets is Pluto. It was formerly thought to be planet but it has since been delisted.
Pluto's orbit lies beyond that of Neptune.
Answer: a) electromagnetic waves
Explanation:
An electromagnetic wave begins when an electrically charged particle vibrates. This causes a vibrating electric field, which in turn creates a vibrating magnetic field. The two vibrating fields together form an electromagnetic wave.
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Answer:
false here is why :)
Explanation:
Regular, moderate-intensity physical activity reduces the risk of developing coronary heart disease and can reduce the likelihood of dying from heart disease.
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