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3 years ago

Which of these best represents the location of the Earth’s core?

Chemistry

2 answers:

djyliett [7]3 years ago

7 0

Answer:

Explanation:

The pit of a peach. Simply, because this is the only answer that actually claims the core of the Earth isn't a type of outer shell.

choli [55]3 years ago

7 0

The best answer would be A) The pit of a peach. The Earth’s core is the center ball of the earth essentially, therefore it is like the pit of a peach. All the other answers don’t make sense because they surround something, they aren’t the center of it. For example, if D said the “yolk” of the egg then it could be considered a correct answer because it would be the center of the egg, just like the core is in the Earth. The center of the Earth is the core!

Hope this helps!!
- Kay :)

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How many joules of heat are needed to raise the temperature of 47.5 g of aluminum from 21°C to 94°C , if the specific heat of al

Montano1993 [528]

Answer:

3120.75J

Explanation:

So, we have the formula $q = mc\Delta t$ . For this example, q is the heat energy in Joules, m is the mass in grams, c is the specific heat capacity in $\frac{J}{{g\°C}}$ , and $\Delta$ t is the change in temperature. In this case, m = 47.5g, c = 0.9 $\frac{J}{{g\°C}}$ , and $\Delta$ t = 94-21 = 73°C. Plugging in the values, we get the joules of heat required to raise 47.5g of Al from 21°C to 94°C which is stated above. You can double check my answer but that should be it. An important thing to be aware of are the units. Sometimes, the heat capacity may not be $\frac{J}{{g\°C}}$ . I may be in Kelvin or something. Anyways, hope this helps.

5 0

4 years ago

Which value is MOST likely to be the boiling point of the substance at this constant pressure?

Luda [366]

At what constant pressure??

6 0

3 years ago

Read 2 more answers

6 1 point If John kicks a soccer ball with 12 N of force and the ball accelerates at 25 m/s2. what is the mass of the ball? 13 k

grin007 [14]

Answer:

Explanation:

7 0

3 years ago

Which of these is a reason an engineer may choose to use a prefabricated

Maksim231197 [3]

Answer:

Explanation:

customization requires more material, more machine time which can creates a greater impact on the environment in the sense of pollution (travel by the extra employees, creation of custom materials, increased machine running time). Good luck in your studies. Hope this answers your question in full.

7 0

2 years ago

If the half-life of a radioactive material is 8 years, how many years will it take for one-half of the original amount of materi

AlekseyPX

It will take 8 years to decay one half of the original amount of the material.

Explanation:

Radioactive materials are those which emit radiations on decaying. So the decay of radioactive materials obey a exponential order.

$N = N_{0}e^{-kt}$

Here, N is the number of radioactive materials present in time t, N₀ is the amount of radioactive material present at original state or at starting. Also k is termed as the disintegration constant and t is the time taken for decay.

So, disintegration constant is the rate at which the radioactive material will decay. In order to determine the time required to decay half of the original amount of radioactive materials, then we have to perform ratio of ln 2 to disintegration constant. This formula is defined as the half life time of the radioactive materials.

Thus, it can be stated as the time required to decay one half of the original amount of any radioactive material is defined as half life time of that material.

Since, here the radioactive material is said to have a half life time of 8 years, then it will require 8 years to decay one half of the original amount of the material.

8 0

4 years ago