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3 years ago

Explain why is takes longer to hard boil an egg at high altitudes than at sea level.

Physics

2 answers:

BaLLatris [955]3 years ago

6 0

Answer: Due to low pressure of air at high altitudes.

Explanation:

At high altitudes, the air pressure is very low due to low density of air molecules as compared to air pressure at sea level. Thus, water boils at higher temperature. It takes more time for water to boil and that is why an egg at high altitudes takes longer to hard boil than at sea level.

krok68 [10]3 years ago

3 0

Water boils at lower tempertature at higher altitude

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Find the value of x in this figure

liraira [26]

Answer:

x=50

Explanation:

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A 300 g glass thermometer initially at 23 ◦C is put into 236 cm3 of hot water at 87 ◦C. Find the final temperature of the thermo

DIA [1.3K]

Answer:

$74^{\circ} C$

Explanation:

We are given that

Mass of glass, $m=300 g$

$T_1=23^{\circ}$

Volume, $V=236cm^3$

Mass of water= $density\times volume=1\times 236=236 g$

Density of water= $1g/cm^3$

Temperature of hot water, $T=87^{\circ}$

Specific heat of glass, $C_g=0.2cal/g^{\circ}C$

Specific heat of water, $C_w=1 cal/g^{\circ}C$

$Q_{glass}=m_gC_g(T_f-T_1)=300\times 0.2(T_f-23)$

$Q_{water}=m_wC_w(T_f-T)=236\times 1(T_f-87)$

$Q_{glass}+Q_{water}=0$

$300\times 0.2(T_f-23)+236\times 1(T_f-87)$

$60T_f-1380+236T_f-20532=0$

$296T_f=20532+1380=21912$

$T_f=\frac{21912}{296}=74^{\circ} C$

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at which plate boundary would you expect to see volcanoes A.divergent b.all of the above c.convergent D.transform

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4 years ago

Why is the reflection of a wave at a free boundary different from reflection at a fixed boundary??

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A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride.

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Answer:

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Explanation:

Mass of CCl₄ = mass of flask and CCl₄ − mass of empty flask

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m = 357.75 g

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d = 357.75 g / 225 mL

d = 1.59 g/mL

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3 years ago