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3 years ago

Alpa wants to change kilometers into a smaller metric unit she will have to

Physics

2 answers:

kirill115 [55]3 years ago

7 0

If you want to change kilometers in to metres you need to multiply it by 100.

DerKrebs [107]3 years ago

6 0

Answer:

Use Egyptian fractions in the calculations.

Explanation:

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A 2.72 A current flows through a wire for

agasfer [191]

Current=2.72A=I
Time=t=9.88s
Charge=Q

$\\ \rm\longmapsto I=\dfrac{Q}{t}$

$\\ \rm\longmapsto Q=It$

$\\ \rm\longmapsto Q=2.72\times 9.88$

$\\ \rm\longmapsto Q=26.87C$

8 0

3 years ago

you are the person in charge of building a nuclear power plant in florida. your first choice is to select a

sammy [17]

Answer: you are the person in charge of building a nuclear power plant in Florida. your first choice is to select a site for building the power plant.

Explanation: To find the answer, we need to know more about the nuclear power plants and the criteria to select the site for power plant.

<h3>What you mean by nuclear power plants?</h3>

Nuclear power can be defined from the nuclear fission reaction.
These power plants will heat the water to produce steam and this steam is used to spin large turbines and thus generates electricity.

<h3>How to select the site for nuclear power plant?</h3>

We have to consider the following things,
keep distance from populated area.
distance from load center.
Accessibility to site.
Water availability and fuel availability.
waste disposal.

Thus, we can conclude that, before building a nuclear power plant, our first choice should be to select a site.

Learn more about the nuclear power plants and the criteria to select the site for power plant here:

brainly.com/question/28045272

#SPJ4

8 0

2 years ago

Where in the galaxy are the most stars born?

kkurt [141]

Answer: Stars are formed in dust clouds and are found in most galaxies.

Explanation:

8 0

3 years ago

Read 2 more answers

a 5.0 kg ball is dropped from a 2.5 m high window. what is the velocity of the ball just before it hits the ground?

julsineya [31]

Answer:

Approximately $7.0\; \rm m \cdot s^{-1}$ .

Assumption: the ball dropped with no initial velocity, and that the air resistance on this ball is negligible.

Explanation:

Assume the air resistance on the ball is negligible. Because of gravity, the ball should accelerate downwards at a constant $g = 9.81 \; \rm m \cdot s^{-2}$ near the surface of the earth.

For an object that is accelerating constantly,

$v^2 - u^2 = 2\, a \, x$ ,

where

$u$ is the initial velocity of the object,
$v$ is the final velocity of the object.
$a$ is its acceleration, and
$x$ is its displacement.

In this case, $x$ is the same as the change in the ball's height: $x = 2.5\; \rm m$ . By assumption, this ball was dropped with no initial velocity. As a result, $u = 0$ . Since the ball is accelerating due to gravity, $a = 9.81\; \rm m \cdot s^{-2}$ .

$v^2 - u^2 = 2\, g \cdot h$ .

In this case, $v$ would be the velocity of the ball just before it hits the ground. Solve for

$v^2 = 2\, a\, x + u^2$ .

$\begin{aligned}v &= \sqrt{2\, a\, x + u^2} \\ &= \sqrt{2\times 9.81 \times 2.5 + 0} \\ &\approx 7.0\; \rm m\cdot s^{-1}\end{aligned}$ .

3 0

3 years ago

Kim walks her dog 5 blocks up the street and then 3 blocks back down

Neporo4naja [7]

The distance covered is 8 blocks, the displacement is 2 blocks up

Explanation:

Distance is a scalar quantity measuring the total length of the path covered by an object, regardless of the direction of its motion
Displacement, on the other hand, is a vector quantity equal to the difference between the final position of motion and the initial position of motion. Its magnitude is equal to the shortest distance in a straight line between the initial and final point of motion.

In this problem, Kim walks the dog 5 blocks up and 3 blocks down:

- The distance is just the total length of the path taken, therefore:

$distance = 5 + 3 = 8 blocks$

- The displacement is a vector connecting the final point to the initial point. Since Kim walks 5 blocks up and 3 blocks down, her final position is

x = +5 +(-3) = +2

Which means, 2 blocks up. Therefore, the displacement is 2 blocks up.

Learn more about distance and displacement:

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5 0

3 years ago