3 years ago

HElp ASAP! Select all examples of vectors.

Physics

1 answer:

AVprozaik [17]3 years ago

7 0

Answer:

A . Force

C . Velocity .

D . Acceleration .

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The amount of water in reservoirs is often measured in acre-ft. one acre-ft is a volume that covers an area of one acre to a dep

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(43,560 ft^2/acre) x 22 acre-ft = 958,320ft^3/acre.

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3 years ago

1. An elephant has more inertia than a mouse.<br><br> Is this:<br> true<br> false

hichkok12 [17]

True
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3 years ago

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A spotlight on the ground is shining on a wall 24m away. If a woman 2m tall walks from the spotlight toward the building at a sp

Lubov Fominskaja [6]

Answer:

$\dfrac{dy}{dt}=-0.059\ m/s$

Explanation:

It is given that,

Distance between the spotlight and the wall, y = 24 m

Height of the woman, h = 2 m

The woman walks toward the building at the rate of 0.6 m/s, $\dfrac{dx}{dt}=0.6\ m/s$

In the attached figure, triangle ABC and MNC are similar. So,

$\dfrac{2}{y}=\dfrac{x}{24}$ ............(1)

$y=\dfrac{48}{x}$

When she is 2 meters from the building. So x = 24-2 = 22 m

$y=\dfrac{48}{22}=2.18\ m$

Differentiating equation (1) i.e.

$xy=48$

$x.\dfrac{dy}{dt}+y.\dfrac{dx}{dt}=0$

$22.\dfrac{dy}{dt}+2.18\times 0.6=0$

$\dfrac{dy}{dt}=-0.059\ m/s$

So, her shadow is decreasing at the rate of 0.059 m/s. Hence, this is the required solution.

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4 years ago

Will give brainlist and many points.

romanna [79]

Answer:

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velikii [3]

Answer:

the pencil i have on my desk is hard

Explanation:

i dont have 5 but here is one

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3 years ago

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