Which type of star is smaller neutron or dwarf

1 answer:

5 0

White dwarfs are formed from the collapse of low mass stars, less than about 10 time the mass of the Sun. This star loses most of its mass in a wind, leaving behind a core that is less than 1.44 solar mass. On the other hand,neutron stars are formed in the catastrophic collapse of the core of a massive star.

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A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and r

kotegsom [21]

Answer:

B) 1.5 m/s

Explanation:

The apparent frequency will be enhanced due to Doppler effect

If f be the apparent frequency , F be the real frequency , V be the velocity of sound and v be the velocity of approaching submarine then f is given by

f = F \frac{V+v}{V-v}\\

\frac{f}{F} =\frac{V+v}{V-v}\\

\frac{f}{F}-1 =\frac{V+v}{V-v}-1\\

\Delta f = \frac{2vf}{V-v}\\

200=\frac{2\times v\times 100\times 1000}{1482-v}\\

v=1.48 m/s

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Hitman42 [59]

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4 0

4 years ago

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During a tug-of-war, team A pulls on team B by applying a force of 1550 N to the rope between them. The rope remains parallel to

yawa3891 [41]

Answer:

3565 J

Explanation:

F = Force applied = 1550 N

s = Displacement caused by the applied force = 2.3 m

$\theta$ = Angle at which the force is applied = 0°