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Semmy [17]
4 years ago
14

7. You probably had difficulty in measuring the period, yet its calculation should prove effortless at this point. Why do you su

spect there is difficulty in the measurement
Physics
1 answer:
Art [367]4 years ago
5 0

Answer:

* First fight the reaction time of the person, which is approximately 1/10 s, remember that the stopwatch does not stop alone

* Problems to synchronize when starting to measure the oscillation and end point of the oscilloscope, this error needs a good control system to be decreased.

*Effect of friction with air

Explanation:

In the measurements of the oscillatory movement in general, the most difficult magnitude of the measurement is the period, by reasoning

* First fight the reaction time of the person, which is approximately 1/10 s, remember that the stopwatch does not stop alone

* Problems to synchronize when starting to measure the oscillation and end point of the oscilloscope, this error needs a good control system to be decreased.

* Effect of friction with air

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A straight wire of length 0.53 m carries a conventional current of 0.2 amperes. What is the magnitude of the magnetic field made
olga55 [171]

Explanation:

It is given that,

Length of wire, l = 0.53 m

Current, I = 0.2 A

(1.) Approximate formula:

We need to find the magnitude of the magnetic field made by the current at a location 2.0 cm from the wire, r = 2 cm = 0.02 m

The formula for magnetic field at some distance from the wire is given by :

B=\dfrac{\mu_oI}{2\pi r}

B=\dfrac{4\pi \times 10^{-7}\times 0.2\ A}{2\pi \times 0.02\ m}

B = 0.000002 T

B=10^{-5}\ T

(2) Exact formula:

B=\dfrac{\mu_oI}{2\pi r}\dfrac{l}{\sqrt{l^2+4r^2} }

B=\dfrac{\mu_o\times 0.2\ A}{2\pi \times 0.02\ m}\times \dfrac{0.53\ m}{\sqrt{(0.53\ m)^2+4(0.02\ m)^2} }

B = 0.00000199 T

or

B = 0.000002 T

Hence, this is the required solution.

4 0
4 years ago
How far can you ride your bike if you ride for 10 min at a speed of 150 m/min
Contact [7]

Answer: 1500metres

Explanation: the formula for distance is speed × time which equals 150m/min × 10 min = 1500m

This formula can be rearranged...

Speed = Distance ÷ time.

Time= Distance ÷ speed.

Distance= Time × speed.

4 0
3 years ago
Read 2 more answers
18. Increased wind speed is accompanied with
atroni [7]

Answer:

hii there

The correct answer is option ( C ) reduced air pressure

Explanation:

hope it helps

have a nice day :)

3 0
3 years ago
Energy that is 'lost" to heat, has merely been converted to another form, not<br> lost forever.
MAXImum [283]

Answer: if the heat energy is wasted, then, energy is lost forever.

Explanation: According to conservative of energy, which state that energy is neither created nor destroyed but only convert from one form to another.

The energy which should have been used in one form has been converted to heat energy which could have been used for for thing or the other, if there is nothing the heat energy can be used for, then the energy is wasted. This is tantamount to being lost forever.

6 0
4 years ago
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3 years ago
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