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strojnjashka [21]
3 years ago
7

What are three common clues that a chemical change has occurred

Physics
1 answer:
ddd [48]3 years ago
6 0
The substance has changed, It dissolved, and it evaproted.
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A potential energy function is given by U(x)=(3.00J)x+(1.00J/m^2)x^3. What is the force function F(x) (in newtons) that is assoc
snow_lady [41]

Answer:

F(x)=-3 N -(3N/m^2) x^2

Explanation:

The force is equal to the negative of the derivative of the potential energy function:

F=-\frac{dU}{dx}

In this problem, the potential energy function is

U(x)=3 x + 1 x^3

Therefore, the force function is:

F(x)=-\frac{dU}{dx}=-\frac{d}{dx}(3x+1x^3)=-3-3x^2

So, adding the units of measurement,

F(x)=-3 N -(3N/m^2) x^2

4 0
4 years ago
Which of these is true of a chemical reaction? (a) energy is always transferred from reactants to products. (b) Energy is transf
lorasvet [3.4K]
The answer is B: energy is transferred, but it can go to the products or the reactants.
3 0
3 years ago
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If the magnitude of the magnetic force on a proton is F when it is moving at 14.0 o with respect to the field, what is the magni
sergeinik [125]

Answer:

The magnitude of the magnetic force at 32.5⁰ to the field, is 2.22 F

Explanation:

Given;

magnitude of the magnetic force is F at 14.0⁰ with respect to the field.

To determine the magnitude of the magnetic force at 32.5⁰ to the field, we apply the following formula and solve with proportion;

f*Sin(14.0⁰) = F

f*Sin(32.5⁰) = ?

= \frac{f*Sin(32.5^o)}{f*Sin(14.0^o)}.F\\\\ =2.22 \ F

Therefore, the magnitude of the magnetic force at 32.5⁰ to the field, is 2.22 F

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4 years ago
What forms when air masses with different temperatures meet?
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Clouds and fog and it may rain or snow
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3 years ago
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Which nonmetal family is sulfur (S) in?
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C. oxygen family....
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