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Colt1911 [192]
3 years ago
10

What does it mean when a mineral has a definite chemical composition? Select 2 choices.

Physics
1 answer:
Sergeu [11.5K]3 years ago
8 0

Answer:

Option (2) and (4)

Explanation:

Minerals are the building blocks of rocks and they are comprised of a certain range of chemical substances whose variety of forms and their arrangements are in a preferred orientation.

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A planet has a period of revolution about the sun equal to T and a mean distance from the sun equal to R. T2 varies directly as
Tamiku [17]

Answer:

T² ∝ R³

Explanation:

Given data,

The period of revolution of the planet around the sun, T

The mean distance of the planet from the sun, R

According to the III law of Kepler, " Law of Periods' states that the square of the orbital period to go around the sun once is directly proportional to the cube of the mean distance between the sun and the planet.

                              T² ∝ R³

                               \frac{T^{2}}{R^{3}} = Constant

From the above equation it is clear that T² varies directly as the R³.

7 0
3 years ago
A 5cm object is located 12 cm from a convex mirror with a focal length of 14cm. Calculate the
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Answer:

-86.415485655

Explanation:

3 0
3 years ago
Will mark as BRAINLIEST....... The Displacement x of particle moving in one dimension under the action of constant force is rela
pentagon [3]

Explanation:

It is given that,

The Displacement x of particle moving in one dimension under the action of constant force is related to the time by equation as:

x=4t^3+3t^2-5t+2

Where,

x is in meters and t is in sec

We know that,

Velocity,

v=\dfrac{dx}{dt}\\\\v=\dfrac{d(4t^3+3t^2-5t+2)}{dt}\\\\v=12t^2+6t-5

(a) i. t = 2 s

v=12(2)^2+6(2)-5=55\ m/s

At t = 4 s

v=12(4)^2+6(4)-5=211\ m/s

(b) Acceleration,

a=\dfrac{dv}{dt}\\\\a=\dfrac{d(12t^2+6t-5)}{dt}\\\\a=24t+6

Pu t = 3 s in the above equation

So,

a=24(3)+6\\\\a=78\ m/s^2

Hence, this is the required solution.

3 0
3 years ago
Which change would create light?
hichkok12 [17]

Answer:

Im not 100% sure but i think the answer is A. An electron in an atom jumping from a lower energy state to a higher one.

Explanation:

lmk if its wrong

6 0
3 years ago
Express 34.0 cm in inches
bulgar [2K]

Hello,

1 inch = 2 centimeters

2 centimeters = 1 inch

34 / 2 = 17

Answer: 34 centimeters is 17 inches!

7 0
3 years ago
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