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s344n2d4d5 [400]

3 years ago

14

A lump of steel of mass 10kg at 627 degree Celsius is dropped in 100kg oil at 30 degree Celsius . the specific heat of steel And

oil are 0.5kj/kg.k and 3.5kj/kg.k calculate the entropy change in steel,oil and in the universe.

1 answer:

Naily [24]3 years ago

8 0

Answer:

700J

Explanation:

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MrRissso [65]

If a shark can travel 15 miles per second, then it can go 150 miles in 10 seconds.

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A car starts from rest with an acceleration of 2.84 m/s2 at the instant when a second car moving with a velocity of 25.7 m/s pas

vredina [299]

Answer:

464.69 m

Explanation:

First car

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=0\times t+\frac{1}{2}2.84t^2\\\Rightarrow s=1.42t^2$

Second car

Distance = Speed × Time

$\text{Distance}=25.7t$

Here, the time taken and the distance traveled will be the same

Equating the two equations

$1.42t^2=25.7t\\\Rightarrow t=\frac{25.7}{1.42}\\\Rightarrow t=18.09\ s$

So, the first would have to move $1.42t^2=1.42\times 18.09^2=464.69\ m$ in order to overtake the second car.

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4 years ago

If the Moon's orbit were perpendicular to the ecliptic, would eclipses be possible? What would be the most common phase of the M

tangare [24]

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4 years ago

at 1 p.m. a car traveling at a constant velocity of 78 km per hour towards the West it's 34 km to the west of our school how far

Fittoniya [83]

83 km/h * 2.5 hours (3:30 - 1:00) = 207.5 km

207.5 km - 15 km = 192.5 km

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3 years ago