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lara31 [8.8K]
3 years ago
12

Si la eficiencia de una máquina de calor es del 50% significa que ?

Chemistry
1 answer:
Karolina [17]3 years ago
8 0

Answer:

No toques el link

Explanation:

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i think it is A

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because earthquakes can cause volcanoes

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How many significant figures are in 0.0233?
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there are 3 significant figures

Explanation:

do not count the first 2 zeros. only the nimbers after the zero

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Complete the statement.<br> Ethanol is<br> an elementary substance<br> a compound
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a compound is a syllable in the outer world

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3 years ago
mickey reacts magnesium with 1.0 M of hydrochloric acid. the reaction tales 2 minutes and 34 seconds to complete. what are 2 way
lutik1710 [3]

Answer:

Explanation:

To slow down this reaction, we can use any of the methods listed below:

  • Increase the size of the magnesium by using solid lumps of  the metal. This will take a much faster time to react than powered and granulated magnesium.
  • Reduce the concentration of the acid.
  • Let the reaction take place at a much lower temperature than that given.

These conditions will slow down a chemical reaction.

7 0
3 years ago
A 222 N force is required to keep an object moving along a circular path with a diameter of 11.6 m at a speed of 7.60 m/s. What
Arte-miy333 [17]

Answer:

m=22.3\ kg

Explanation:

The expression for centrifugal force is shown below as:-

F=\frac{m\times v^2}{r}

Where, m is the mass of the object = ?

v is the velocity of the object = 7.60 m/s

r is the radius

F is the force = 222 N

Diamter = 11.6 m

Radius = d/2 = 11.6 m/2 = 5.8 m

Applying the values in the above expression as:-

222=\frac{m\times {7.60}^2}{5.8}

57.76m=1287.6

m=22.3\ kg

7 0
3 years ago
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