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3 years ago

Which is denser: a block of wood or a block of iron? What does each do if you drop it in water?

Physics

2 answers:

Anarel [89]3 years ago

5 0

Answer:

Explanation:

a block of iron in denser then the block of wood

as the atoms in iron are more closely bounded as compared to that in the wood

if both are drop in water iron block sink to bottom while float on the level

lapo4ka [179]3 years ago

4 0

Explanation:

a block of iron in denser then the block of wood

as the atoms in iron are more closely bounded as compared to that in the wood

if both are drop in water iron block sink to bottom while float on the level

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What causes the very high surface temperature on Venus

IRINA_888 [86]

Venus is so hot because it is surrounded by a very thick atmosphere which is about 100 times more massive than our atmosphere here on Earth. As sunlight passes through the atmosphere, it heats up the surface of Venus. ... The heat becomes trapped and builds up to extremely high temperatures.

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3 years ago

An object with a mass of 78 kg is lifted through a height of 6 meters how much work is done

il63 [147K]

We got the following:
m = 78kg
h = 6m
g = 9.8 m/ $sec^{2}$ ≈ 10 m/ $sec^{2}$
----------------------------------------------------------------------------
A = ?

As we know A = Ep = mgh -> potential energy
so the answer would be A = 78 * 6 * 10 = 4680 Joule

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3 years ago

The Capacitive reactance of a 0.094uF capacitor when a frequency of 25kHz is applied is lus 68 Ohms 0.68 Ohms luf

Nana76 [90]

Answer:

Capacitive reactance of the capacitor is 68 ohms

Explanation:

It is given that,

Capacitance, $C=0.094\ \mu F=0.094\times 10^{-6}\ F$

Frequency, $f=25\ kHz=25\times 10^3\ Hz$

Capacitive reactance is given by :

$X_C=\dfrac{1}{2\pi fC}$

$X_C=\dfrac{1}{2\pi 25\times 10^3\times 0.094\times 10^{-6}}$

$X_C=67.72\ \Omega$

$X_C=68\ \Omega$

So, the capacitive reactance of the capacitor is 68 ohms. Hence, this is the required solution.

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3 years ago

Which statement about stage 3 NREM is accurate?

cestrela7 [59]

Answer:

hope

that helps

Explanation:

D. The sleeper's heart rate, blood pressure, and breathing rate drop to their lowest levels.

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3 years ago

Describe what happens to the energy of a wave if the frequency decreases and the frequency increased

Nata [24]

"As frequency increases, wavelength decreases. Frequency and wavelength are inversely proportional. This basically means that when the wavelength is increased, the frequency decreases and vice versa. Wavelength is described as the distance between a trough to a trough or a crest to a crest."

I'd recommend paraphrasing it tho.

4 0

3 years ago

Read 2 more answers