3 years ago

PHYSICS 30 POINTS + BRAINLIEST ANSWER

Physics

1 answer:

prohojiy [21]3 years ago

6 0

The answer should be 0.42 s

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We observe a glowing cloud of gas in space with a spectroscope. We note that many of the familiar lines of hydrogen that we know

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No information can be concluded from this observation alone the cloud is much cooler than hydrogen on Earth

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3 years ago

1. बालू के एक कण की त्रिज्या 1.6 x 10-4मी है। इस कण की त्रिज्या

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BOIIII english????

Explanation:

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Why is disagreement among scientists important to the progress of science? Facing disagreement forces scientists to prove their

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Facing disagreement forces scientists to prove their theories more conclusively.

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A rubber rod with a negative 4.0 C (-4.0 x 10-6 C) charge is 10 cm east of a pith ball with a positive charge of 5.0 C. A plas

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3 years ago

Under what conditions will a moving 0.030 kg marble and a moving 2.43 kg rock have the same kinetic energy

Anestetic [448]

Answer:

To have the same kinetic energy the speed of the marble must be 9 times the speed of rock.

Explanation:

The general formula of kinetic energy is given as follows:

$K.E = \frac{1}{2}mv^{2}$

where,

K.E = Kinetic Energy

m = mass of the object

v = speed of the object

So, for the marble and rock to have same kinetic energy, we can write:

$K.E_{marble} = K.E_{rock}\\\\\frac{1}{2}m_{marble}v_{marble}^{2} = \frac{1}{2}m_{rock}v_{rock}^{2}\\\\(0.03\ kg)v_{marble}^{2} = (2.43\ kg)v_{rock}^{2}\\\\taking\ square\ root\ on\ both\ sides:\\v_{marble} = \sqrt{\frac{2.43\ kg}{0.03\ kg}}v_{rock}\\\\v_{marble} = 9\ v_{rock}$

<u>Hence, to have the same kinetic energy the speed of the marble must be 9 times the speed of rock.</u>

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3 years ago

PHYSICS *30 POINTS + BRAINLIEST ANSWER*

PHYSICS 30 POINTS + BRAINLIEST ANSWER