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swat32
3 years ago
8

A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is ma

de with the battery, the voltage across the resistor is
Physics
1 answer:
Vanyuwa [196]3 years ago
8 0

Answer:

At the moment contact is made with the battery, the voltage across the resistor is equal to the batteries terminal voltage

Explanation;

Because at series connection the battery and resistor have equal voltage

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The last page of a book is numbered 764. The book is 3.0 cm thick, not including its covers. What is the average thickness (in c
Inessa [10]

Answer:

Thickness of each page will be 0.00785 cm

So option (E) will be correct answer

Explanation:

We have given that last page on the book is numbered as 764

So total number of pages in the book =\frac{764}{2}=382pages ( as each page is numbered in both side )

Total thickness of the book = 3 cm

We have to found the thickness of the each page

So thickness of each page will be =\frac{3}{382}=0.00785cm

So option (E) is correct option

7 0
3 years ago
Use the rules for significant figures to find the answer to the following addition problem: "21.4+15+17.17+4.003"
harina [27]

Answer:

57.6

Explanation:

"Significant figures" refer to figures that have an actual contribution to a <em>number's value.</em>

They refer to all digits<u> except those with</u><em><u> </u></em><em><u>"leading zero,"</u></em> which means having a zero digit before a specific number. For example, in the number 0234, the significant figures are<em> 234. </em>

The rule for adding and subtracting significant figures is to <em>round off the answer to the least number of decimal places</em>. However, when it comes to multiplying and dividing significant figures, you have<em> round off the answer to the least number of significant digits.</em>

<u>Let's solve.</u>

 21.4

+15

 17.17

<u>  4.003</u>

57.573

Let's now round off to the<em> least number of decimal places</em>, which is the <em>tenths. </em>Since 0.5 is followed by a number greater than 5, we have to round it off to 6. Therefore, the answer is: 57.6

5 0
3 years ago
Sin100cos40-cos100sin40​
Andre45 [30]

Answer:

Sin(60°)=\frac{\sqrt{3} }{2}

Explanation:

Assuming the given angles are in degrees

We know that Sin(A-B)=SinACosB-CosASinB

Here A=100° and B=40°

Sin(100)Cos(40)-Cos(100)Sin(40)=Sin(100-40)=Sin(60)=\frac{\sqrt{3} }{2}

6 0
3 years ago
What is the instruments used to measure light intensity, wind intensity and relative humidity ​
faust18 [17]

Answer:

we use : photometer to measure light intensity

:Anemometer to measure wind intensity

:Hygrometer to measure relative humidity

8 0
3 years ago
What characteristics determine how easily two substances change temperature? Check all that apply.
Vikki [24]
<h3><u>Answer;</u></h3>
  • Amount of time the two substances are in contact
  • Area in contact between the two substances
  • Specific heat of the material that makes up the substances
<h3><u>Explanation</u>;</h3>
  • The change in temperature of a substance is caused by heat energy. <em><u>The change in temperature will depend on factors such as mass of the substance, the type of material it is made from, the time taken , specific heat of the material that makes the substance, and also the area of contact</u></em>.
  • <u>The amount of time</u> the two substances are in contact affect the change in temperature such that if the two bodies are in contact for a longer time then a bigger change in temperature will be observed.
  • <u>Specific heat capacity </u>also determines the change in temperature that will be observed, such that a substance with a bigger specific heat capacity will record a small change in temperature.
5 0
3 years ago
Read 2 more answers
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