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IrinaK [193]
3 years ago
7

Four boxes are sliding with constant speed before each box experiences and unbalanced force of 8 N. Which box would experience t

he greatest acceleration when the unbalanced force is applied? Answer choices: A) The box with a mass of 2 g B) The box with a mass of 4g C) The box with a mass of 6 g D)The box with a mass of 8 g
Physics
1 answer:
neonofarm [45]3 years ago
5 0

Answer:

d

Explanation:

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A 20 Ohm resistance is connected
frutty [35]

Answer: 225 V

Explanation:

<u>Given:</u>

Secondary voltage,V2 = 150v

Resistance is connected across secondary winding,∴R2 = 20Ω

Supply current, ie, I1 = 5A

\text{Now, secondary current,} \ $I_{2}=\frac{V_{2}}{R_{2}}=\frac{150}{20}=7.5$$$\therefore I_{2}=7.5 \mathrm{~A}$$For Transformers, we have $\frac{N_{2}}{N_{1}}=\frac{V_{2}}{V_{1}}=\frac{I_{1}}{I_{2}}$ so, Taking $\frac{N_{2}}{N_{1}}=\frac{l_{1}}{l_{2}}$ inserting all given \& obtained values, we get $\frac{N_{2}}{N_{1}}=\frac{5}{7.5}$$$\therefore \text { Turns ratio }=\frac{N_{1}}{N_{2}}=\frac{7.5}{5}=\frac{3}{2}=3: 2$$

\text{Again taking,}\frac{N_{1}}{N_{2}}=\frac{V_{2}}{V_{1}}$ \\So, \\$V_{1}=\frac{N_{1}}{N_{2}} V_{2}\\$ inserting all values, we get, $V_{1}=\frac{7.5}{5} * 150=225$\\Therefore, \fbox{Primary voltage, {$V_{1}=225 \mathrm{~V}$}}

8 0
1 year ago
With that push, they have accelerated their masses, which means they have _____ of their bodies.
bixtya [17]
Answer: changed the velocity

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8 0
2 years ago
Examples of the period, frequency, speed of a wave in a sentence?
Kamila [148]
Hi There! :)

<span>Examples of the period, frequency, speed of a wave in a sentence?

                                Examples

•</span><span>He indicated the space behind him with a </span>wave<span> of a hand.
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•</span><span>On land only the grass and trees </span>wave, but the water itself is rippled by the wind.

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6 0
2 years ago
A boy rides a bike 56 meters. It takes him 8 seconds. What is his speed?
lilavasa [31]

Answer:

7 meters per second or 7 m/s

8 0
2 years ago
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Hi guys! pls help I asked this question almost 2 times and still didn't receive my answers.....Thanks in advance..
rjkz [21]

Answer:

1. Lateral inversion is a phenomenon in which left appears to be right and vice versa. It is due to direction that light follows when it strikes a reflecting surface, generally a mirror.

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Dentists use concave mirrors to view large images of the teeth of the patients.

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It is is used as a rear view mirror in vehicles.

It is used as a vigilance mirror.

3 0
2 years ago
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