2 years ago

What is the mass of 32.5 cm^3 of alcohol?

Physics

1 answer:

ZanzabumX [31]2 years ago

8 0

Answer:

The mass of 32.5 cm^3 of alcohol is 25.7g

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A small glider is placed against a compressed spring at the bottom of an air track that slopes upward at an angle of 39.0 ∘ abov

zvonat [6]

Answer:

kinetic energy of glider = -0.376 j

Explanation:

Original distance by which the spring is compressed can be determine by using law of conservation of energy (As spring slide from glider, it gain some potential energy. On the top of track there is glider’s potential energy exist)

$\frac{1}{2} kx^2 = mgh$

where x is compressed distance by spring

height of track is calculated as

$sin\theta \frac{h}{l}$

$h = l sin\theta$

where l is distance covered by glider, theta angle is the angle of inclination of track

therefore, we have formula for x as

$x = \sqrt{\frac{2mglsin\theta}{k}}$

$x = \sqrt{\frac{2\times 0.05 \times 9.8 \times 1.50\times sin39}{600}}$

x = 0.039 m

kinetic energy of glider = potential energy by spring - potential energy at 1.50 distance

$=( \frac{1}{2} \times 600\times 0.039^2) - (0.05 \times 9.8 \times 1.5 \times sin 39)$

kinetic energy of glider = -0.376 j

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4 years ago

What does electrons and the nucleus have in common?

timama [110]

<span>All atoms of the same element have the same number of protons in the nucleus and consequently have the same atomic number. All atoms of the same neutral element have the same number of electrons as well.</span>

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4 years ago

Witch of the following is not an appropriate unit for power

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There are no appropriate units for power on the list you provided

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The transfer of energy through varios stages in an ecological community is called

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It is called food chain

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