3 years ago

PLEASE HELPPPP!!! Density is the amount of mass per unit volume. True or False

Physics

1 answer:

Alexxandr [17]3 years ago

4 0

Answer:

true :D

Explanation:

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A kite is hovering over the ground at the end of a straight 38-m line. the tension in the line has a magnitude of 17 n. wind blo

postnew [5]

Let the tension in the thread will be at angle theta

now by force balance in x and y directions we can say

$17 cos\theta = 18 cos60$

$17 cos\theta = 9$

$\theta = 58.03 degree$

now for the height of the kite we can use

$h = L sin\theta$

$h = 38 sin58.03$

$h = 32.23 m$

<em>so it will be at height 32.23 m from ground</em>

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3 years ago

Two runners ran side by side, each holding one end of a horizontal pole. How would this affect the direction of the runners? Exp

zhuklara [117]

Answer:

They will run parallel to each other as the none of a straight pole cannot be bent in such a way where one side can turn without the other turning.

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3 years ago

Aunt Matilda goes to a well and throws a penny straight down the well at 3.0 m/s. She hears a splash after 0.5 seconds. How deep

nevsk [136]

Answer : The correct option is (d) 2.73 m

Explanation :

By the 2nd equation of motion,

$s=ut+\frac{1}{2}at^2$

where,

s = distance or height = ?

u = initial velocity = 3.0 m/s

t = time = 0.5 s

a = acceleration due to gravity = $9.8m/s^2$

Now put all the given values in the above equation, we get:

$s=(3.0m/s)\times (0.5s)+\frac{1}{2}\times (9.8m/s^2)\times (0.5s)^2$

$s=2.73m$

Therefore, the correct option is (d) 2.73 m

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3 years ago

How many main retrofit strategies help solve the ecological problems with suburbs?

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ANSWER:

Explanation:

Because they are elven in numbers

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2 years ago

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NH4OH is the answer. Hope this helps you.

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3 years ago