3 years ago

What is the leading hypothesis for the origin of short gamma-ray bursts?

1 answer:

6 0

Answer:

Gamma rays are the most energetic form of rays. A gamma ray burst can emit a large amount of energy in a very short interval of time. In fact, a short gamma-ray burst occurs in less than 2 seconds. A leading hypothesis states that when two neutron stars merge or when a neutron star merges with a black hole, short gamma-ray burst originates. Such merger are expected to produce kilonovoe.

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2 years ago

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. Neglect nonconservative

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Answer:

1.5 m

Explanation:

Using the law of conservation of energy

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PE=mgh where m is the mass of skateboarder, g is acceleration due to gravity which in this case is taken as $9.81 m/s^{2}$ and h is the highest point reached by the skateboarder. Equating PE=KE we have

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$h=\frac {0.5v^{2}}{g}$

Substituting v with 5.4 m/s and g as $9.81 m/s^{2}$ we obtain

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