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Verizon [17]
3 years ago
5

Why do we use the name electromagnetism to describe the force of an

Physics
1 answer:
ElenaW [278]3 years ago
5 0

Answer:

magnet, gravity

Explanation:

You might be interested in
Most high mountain ranges are composed of
mixer [17]

Answer:

folded sediments , undeformed granite, flat-lying sediments, glacial till and metamorphic rock

Explanation:

6 0
3 years ago
A man 6.00 ft tall approaches a street light 15.0 ft above the ground at the rate of 4.00 ​ft/s. How fast is the end of the​ man
klio [65]

Answer:

\frac{dx}{dt} = 10 ft/s

Explanation:

As per given figure let say the tip of the shadow is at distance "x" from the base of the lamp

so here we have

\frac{x}{15} = \frac{x - y}{6}

so we have

6x = 15 x - 15 y

15 y = 9 x

now we have

5\frac{dy}{dt} = 2\frac{dx}{dt}

5(4) = 2\frac{dx}{dt}

\frac{dx}{dt} = 10 ft/s

7 0
4 years ago
A museum sets up a display of fluorescent minerals. which best describes how electromagnetic waves can be used to enhance the di
IRISSAK [1]

Answer:

ultraviolet light shining on the minerals will cause them to give off visible light.

Explanation:

Here we know that in all electromagnetic waves have certain range of energy

Here in the above case when a given frequency range of electromagnetic wave incident on the fluorescent mineral then that mineral will absorb few amount of energy and the remaining energy will throw back into the surrounding again.

So here the main concept is that when a electromagnetic wave which is higher in energy then visible light incident on fluorescent material then it will absorb some amount of energy and the remaining energy is released in form of light

So here energy more than visible light is for ultraviolet light only

so here the correct answer would be

ultraviolet light shining on the minerals will cause them to give off visible light.

3 0
3 years ago
Read 2 more answers
How does the end point differ from the equivalence <br>point of a titration?​
Gwar [14]

<u>Answer:</u>

<em>Equivalence point and end point are terminologies in pH titrations and they are not the same. </em>

<u>Explanation:</u>

In a <em>titration the substance</em> added slowly to a solution usually through a pippette is called titrante and the solution to which it is added is called titrand. In acid-base titrations acid is added to base or base is added to acid.the strengths of the <em>acid and base titrated</em> determines the nature of the final solution.

At equivalence point the <em>number of moles of the acid</em> will be equal to the number of moles of the base as given in the equation.  The nature of the final solution determines the <em>pH at equivalence point. </em>

<em>A pH less than 7 will be the result if the resultant is acidic and if it is basic the pH will be greater than 7. </em>In a strong base-strong acid and weak base-weak acid titration the pH at the equivalence point will be 7 indicating <em>neutral nature of the solution. </em>

3 0
3 years ago
PERIOD OF THE LEG The period of the leg can be approximated by treating the leg as a physical pendulum, with a period of Equatio
Lesechka [4]

Answer:

Explanation:

We can see from the question that

        T 2\pi\sqrt{\frac{I}{mgh} }

  and  I = \frac{ml^2}{3}

           m = 16% of  67kg

 =>      m =10kg

      from the question  l =48% of 1.83m

 Substituting this into the equation

                 I = \frac{10.72 * (0.8784)^2}{3}

        =>   I = 2.7571 \  kg m^2

                      h = 0.5 * L

                       h = 0.5 * 0.8784

                     h = 0.4392m

From the equation above

      T  =  2 \pi \sqrt{\frac{2.7571}{10 .72 * 9.81 * 0.4392} }

       T = 1,534\ sec

           

4 0
3 years ago
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