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katen-ka-za [31]

3 years ago

10

How much time is required for a car to reach a speed of 100 m/s if it starts from rest and its average acceleration is 12 m/s2?

2 answers:

gtnhenbr [62]3 years ago

7 0

Answer:

t = 8.3s

Explanation:

V = 100 m/s U = 0 m/s t = ? a = 12 m/s2

V = U + at

100 = 0 + 12 × t = 100 = 12t

12t = 100

t = 100/12 = 25/3

t = 8.3s

harkovskaia [24]3 years ago

5 0

A :-) for this question , we should apply
a = v - u by t
t = v - u by a
Given - u = 0
v = 100 m/s
a = 12 m/s^2
Solution -
t = v - u by a
t = 100 - 0 by 12
t = 100 by 12
( cut 12 and 100 because 2 x 50 = 100 ,
2 x 6 = 12 )
( cut 6 and 50 because 2 x 3 = 6 ,
2 x 25 = 50 )
t = 3 by 25
t = 0.12 sec

.:. The time is 0.12 sec.

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Based on the image, which is not a wavelength?

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The distance that is not a wavelength in the image is C to E.

<h3>What is wavelength?</h3>

Wavelength is the distance between two successive crests or two successive trough or crest to trough.

It is also the distance over which the wave's shape repeats.

Based on the image, the following are wavelengths;

A to E, this is wavelength because it is between a crest and a trough.
B to F, this is wavelength because it is between two successive crest.
D to H, this is wavelength because it is between two successive trough.

Thus, the distance that is not a wavelength in the image is C to E.

Learn more about wavelength here: brainly.com/question/10728818

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3 years ago

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Using formula of distance

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$y=\dfrac{\lambda D}{d}$

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3 years ago

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kolezko [41]

Answer:

(a) Maximum current through resistor is 1.43 A

(b) Maximum charge capacitor receives is $1.50\times 10^{-3}\text{ C}$ .

Explanation:

(a)

In an RC (resistor-capacitor) DC circuit, when charging, the current at any time, <em>t</em>, is given by

$I(t) = I_0e^{-t/\tau}$

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$I = \dfrac{50.0\text{ V}}{35.0\ \Omega} = 1.43\text{ A}$

(b) The maximum charge is given

<em>Q</em> = <em>CV</em>

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