2 years ago

Which of the following statements best describes earths mineral resources

Physics

2 answers:

bulgar [2K]2 years ago

8 0

It is D, you can not replace minerals. This makes them valuable.

prohojiy [21]2 years ago

3 0

It's B. Valuable and non-renewable. Their valuable because they can't be renewed.

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A solid sphere is placed on a frictionless floor in a very long corridor and is given a quick push so that it begins to slide, w

prohojiy [21]

I think it’s D I hope it helps

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2 years ago

Drawing a ray diagram for an object far from convex lens requires how many rays?

Crank

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Explanation:

four rays can also explain the ray diagram if the object is at infinity

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What is the height of a building that an object is dropped from if it has a mass of 3 kg and hits the ground with a velocity of

Marizza181 [45]

Answer:

125 m

Explanation:

m = 3kg

v = 50m/s

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drek231 [11]

Answer:

The law of conservation of momentum states that the total momentum of interacting objects does not change. This means the total momentum before a collision or explosion is equal to the total momentum after a collision or explosion.

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2 years ago

Read 2 more answers

How much heat is released when 432 g of water cools down from 71'c to 18'c?

maria [59]

The heat released by the water when it cools down by a temperature difference $\Delta T$ is
$Q=mC_s \Delta T$
where
m=432 g is the mass of the water
$C_s = 4.18 J/g^{\circ}C$ is the specific heat capacity of water
$\Delta T =71^{\circ}C-18^{\circ}C=53^{\circ}$ is the decrease of temperature of the water

Plugging the numbers into the equation, we find
$Q=(432 g)(4.18 J/g^{\circ}C)(53^{\circ}C)=9.57 \cdot 10^4 J$
and this is the amount of heat released by the water.

7 0

2 years ago