3 years ago

Question 3 (1 point) Question 3 Unsaved

Physics

1 answer:

zaharov [31]3 years ago

6 0

Q.3 the ans. <span>increased urine output
</span>Q.4 the ans. <span>when you first wake-up
Q.5 the ans. water</span>

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Simplify the expression [9+2(2-4)]/3

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Answer:

5/3

Explanation:

[9+2(2-4)]/3

BODMAS

[9+2(-2)]/3

[9-4]/3

5/3

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Talking to adults can be intimidating and uncomfortable if you do not yet feel like one. However, learning how to effectivelycom

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In projectile mtion, what is the y-component of the initial velocity? if V= Vi = 100 m/s and the angle with horizontal axis Θ =

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A person of mass m will bungee-jump from a bridge over a river where the height from the bridge to the river is h. The bungee co

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Answer: $k_{min}=\frac{18mg}{h}$

Explanation:

Given

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Person will just stop before hitting the river

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$mgh=\frac{kx^2}{2}$

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3 years ago

a person when asked to speak up,increases her sound level from 30dB to 60dB.The amount of power per unit area increased by? a)30

aivan3 [116]

Answer:

d) 1000 times

Explanation:

As we know that difference of sound level is given as

$L_2 - L_1 = 10 Log \frac{I_2}{I_1}$

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$Log\frac{I_2}{I_1} = \frac{(L_2- L_1)}{10}$

$Log\frac{I_2}{I_1} = \frac{60 - 30}{10}$

$Log\frac{I_2}{I_1} = 3$

now we have

$\frac{I_2}{I_1} = 10^3$

so it is

d) 1000 times

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3 years ago