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1 year ago

What do energy advisors mean by the phrase "the greenest kilowatt is the one you never use?"

Physics

1 answer:

d1i1m1o1n [39]1 year ago

4 0

Answer:

"Energy deficiency, no coal-burning, no-cost mining pollution" is the correct answer.

Explanation:

“The greenest kilowatt-hour seems to be the one this really doesn't should use,” explained Joe Stepenovitch, co-owner as well as COO of something like the electricity IQ Group. Whether a kilowatt becomes generated is far less essential instead of not needing to do something with it.
It, therefore, reduces operational costs, appeals to progressives and green-conscious consumers, prepares the business for impending emissions reductions policy caps, as well as coincides with you including an imminent future focused on renewable energy sources.

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Suppose the door of a room makes an airtight but frictionless fit in its frame. Do you think you could open the door if the air

Amiraneli [1.4K]

Answer:

Yes, it could be opened

Explanation:

Pressure is force per unit area

$P =\frac{F}{A}$

Since there is a difference in air pressure on both sides, this difference when multiplied by the area of the floor will create a force which could open the door, if this force is complimented with a greater applied force.

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2 years ago

na drewnianej podłodze znajduje się skrzynka o masie 18 kg . W pewnym momencie pod wpływem siły skierowanej poziomo skrzynia zac

maksim [4K]

The answer is 4 I stg niq

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2 years ago

Nate throws a ball straight up to Kayla, who is standing on a balcony 3.8 m above Nate. When she catches it, the ball is still m

marin [14]

Answer:

9.1m/s

Explanation:

Nate throws a straight ball to Kayla who is standing at a balcony 3.8m above Nate

When she catches the ball, it is still moving upward with a speed of 2.8m/s

v = 2.8m/s

u = ?

s = 3.8m

a= -9.8(The acceleration has a negative sign because the speed of the ball is declining)

Therefore the initial speed at which Nate threw the ball can be calculated as follows

v^2= u^2 + 2as

2.8^2= u^2 + 2(-9.8)(3.8)

7.84= u^2 + (-74.48)

7.84= u^2 - 74.48

u^2= 7.84 + 74.48

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u^2= 82.32

u= √82.32

u = 9.1m/s

Hence the initial speed at which Nate threw the ball is 9.1m/s

8 0

2 years ago

Pamela has three computers, all of

Fiesta28 [93]

U need to write better u egg head kid or tell your mom

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1 year ago

Read 2 more answers

A 1.00 kg ball traveling towards a soccer player at a velocity of 5.00 m/s rebounds off the soccer

matrenka [14]

Answer:

A) F = - 8.5 10² N, B) I = 21 N s

Explanation:

A) We can solve this problem using the relationship of momentum and momentum

I = Δp

in this case they indicate that the body rebounds, therefore the exit speed is the same in modulus, but with the opposite direction

v₀ = 8.50 m / s

v_f = -8.50 m / s

F t = m v_f -m v₀

F = $m \frac{(v_f - v_o)}{t}$

let's calculate

F = $1.00 \ \frac{(-8.5-8.5)}{2 \ 10^{-2}}$

F = - 8.5 10² N

B) let's start by calculating the speed with which the ball reaches the ground, let's use the kinematic relations

v² = v₀² - 2g (y- y₀)

as the ball falls its initial velocity is zero (vo = 0) and the height upon reaching the ground is y = 0

v = $\sqrt{2g y_o}$

calculate

v = $\sqrt{2 \ 9.8 \ 10}$

v = 14 m / s

to calculate the momentum we use

I = Δp

I = m v_f - mv₀

when it hits the ground its speed drops to zero

we substitute

I = 1.50 (0-14)

I = -21 N s

the negative sign is for the momentum that the ground on the ball, the momentum of the ball on the ground is

I = 21 N s

4 0

1 year ago