What is a gamma-ray burst, and how does it happen?

What is a gamma-ray burst, and how does it happen?
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It happens when two gamma rays come from different stars and collide and make a big explosion . A gamma ray burst is when two gamma rays come from different stars and collide and make a big explosion. BOOM
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Which of the following is/are true? A. Because of its thickness, the tensile strength of a healing wound on the eyelid is much less than one on the thick skin of the back. B. By 2 days, the experimental burst strength of skin is minimal since collagen has been formed in the wound but has not yet cross-linked. C. Wound strength reaches a plateau by 3 weeks. D. Wounds rarely, if ever, regain the strength of intact tissues.

Description : Which of the following is/are true? A. Because of its thickness, the tensile strength of a healing wound on the eyelid is much less than one on the thick skin of the back. B. By 2 days, ... strength reaches a plateau by 3 weeks. D. Wounds rarely, if ever, regain the strength of intact tissues.

Last Answer : Answer: BD DISCUSSION: Tensile strength measures load per cross-section area at rupture, whereas burst strength measures load required to break a wound, regardless of dimension. Therefore, skin wounds have ... a slower rate for more than a year. Wounds do not regain the strength of normal tissue

'Cloud burst' means – (1) Sowing of seeds of a crop in cloudy weather. (2) Abnormally heavy downpour of rain, associated with a thunderstorm. (3) Formation of artificial rain. (4) Presence of scattered flakes of cloud in the sky.

Description : 'Cloud burst' means – (1) Sowing of seeds of a crop in cloudy weather. (2) Abnormally heavy downpour of rain, associated with a thunderstorm. (3) Formation of artificial rain. (4) Presence of scattered flakes of cloud in the sky.

Last Answer : (2) Abnormally heavy downpour of rain, associated with a thunderstorm. Explanation: A cloudburst is an extreme amount of precipitation, sometimes accompanied by hail and thunder, that normally ... . However, cloudbursts are infrequent as they occur only via orographic lift or sudden condensation.

Cloud burst means – (1) Formation of artificial rain (2) Abnormally heavy downpour of rain, associated with thunderstorm (3) Presence of scattered flakes of cloud in the sky (4) Sowing of seeds of a crop in a cloudy weather

Description : Cloud burst means – (1) Formation of artificial rain (2) Abnormally heavy downpour of rain, associated with thunderstorm (3) Presence of scattered flakes of cloud in the sky (4) Sowing of seeds of a crop in a cloudy weather

Last Answer : (2) Abnormally heavy downpour of rain, associated with thunderstorm Explanation: A cloudburst is sudden copious rainfall. It is a sudden aggressive rainstorm falling for a short period of time limited to a small geographical area. Generally cloudbursts are associated with thunderstorms

The burst of monsoons in the month of June brings rain to – (1) Kerala and Karnataka (2) Kerala and Southern coast of Tamil Nadu (3) Kerala, Tamil Nadu and parts of Andhra Pradesh (4) Kerala, Tamil Nadu and Karnataka

Description : The burst of monsoons in the month of June brings rain to – (1) Kerala and Karnataka (2) Kerala and Southern coast of Tamil Nadu (3) Kerala, Tamil Nadu and parts of Andhra Pradesh (4) Kerala, Tamil Nadu and Karnataka

Last Answer : (2) Kerala and Southern coast of Tamil Nadu Explanation: The burst of monsoons in the month of June brings rain to Kerala and Southern coast of Tamil Nadu.

It is easy to burst a gas-filled balloon with a needle than with a nail. It is because – (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Description : It is easy to burst a gas-filled balloon with a needle than with a nail. It is because – (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Last Answer : (3) needle exerts more pressure than nail on the balloon. Explanation: It is easy to burst a gas-filled balloon with a needle than with a nail because the needle applies more pressure than nail. Besides, ... tip of the needle, so only a little force gives a lot of pressure (pressure = force/area).

Pipelines in cold countries often burst in winter, because – (1) Water freezes and expands in its volume (2) Temperature of ice is less than that of water (3) Pipelines contract in their volume (4) Pipelines expand due to freezing

Description : Pipelines in cold countries often burst in winter, because – (1) Water freezes and expands in its volume (2) Temperature of ice is less than that of water (3) Pipelines contract in their volume (4) Pipelines expand due to freezing

Last Answer : (1) Water freezes and expands in its volume Explanation: Water expands on freezing. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees ... it expands by approximately 9%. The fact that water expands upon freezing causes icebergs to float.

Water pipes in hilly areas often burst on a cold frosty night, because – (1) The material of which pipes are made contracts due to cold and so breaks (2) Water in the pipes freezes and on freezing water expands, so pipes break (3) Frost makes the pipes rusty, so they break (4) None of these

Description : Water pipes in hilly areas often burst on a cold frosty night, because – (1) The material of which pipes are made contracts due to cold and so breaks (2) Water in the pipes freezes and on freezing water expands, so pipes break (3) Frost makes the pipes rusty, so they break (4) None of these

Last Answer : (2) Water in the pipes freezes and on freezing water expands, so pipes break Explanation: The temperature may fall below 0° C during cold frosty nights which converts the water inside the pipes into ice, ... in an increase in volume. This exerts great force on the pipes and as a result, they burst.