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Kitty [74]
2 years ago
15

The lift took 5 seconds to arrive at the second floor. What was the power of lift?

Physics
2 answers:
Lubov Fominskaja [6]2 years ago
8 0

Answer:

D

Explanation:

Sana maka tulong huhuhuhuh

gtnhenbr [62]2 years ago
7 0

Answer:

It should be D. 3,700 W

:D

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What is a likely consequence of preventing prescribed burns to forest ecosystems?
liraira [26]

The forest ecosystem will regain back its natural ecology compared to burning of the forest and other illegal activities done to the forest. And also, some of the animals living in that forest will live and those that are endangered will not be threatened.

5 0
2 years ago
Can someone help with these
yaroslaw [1]

<em><u>One</u></em>

Givens

  • delta B = 0.20 T/s
  • A = 0.07 m^2
  • R = 3.5 ohms

Formula

Φ = ΔB*A

e = Φ

Solution (first part)

e = 0.2 * 0.07

e = 0.014 emf

Solution (second part)

i = e/R

i = 0.014 / 3.5

i = 4 * 10^-3

i = 4 ma

Answer

A

<em><u>Two</u></em>

Givens

N = 200 turns

Φ = 30 degrees

Delta B = 0.45 T/s

phi = 30 degrees

r = 0.06 meters

Formula

e = -N * delta B * A * Cos(phi)

Solution

e = -200 * 0.45 (pi r^2) * Cos(30)

e = - 200 * 0.45 * (3.14 * 0.06^2) * cos(30)

e = 0.881 emf

Answer

A

4 0
3 years ago
It's a snowy day and you're pulling a friend along a
NeX [460]

The coefficient of friction between the sled and the snow is 0.119.

To find the answer, we need to know about the friction.

<h3>How to find the coefficient of friction between the sled and the snow?</h3>
  • Whenever a body moves over the surface of another body, a force come into play, which acts parallel to the surface of contact and oppose the relative motion. This opposing force is called friction.
  • To solve the problem, we have to draw the free body diagram of the given system.
  • We have given with the following values,

                                     a=0\\\alpha =35^0\\T=75N\\m=57kg

Here, acceleration will be equal to zero, because the velocity is given as constant.

  • Thus, from the diagram, we can write the balancing equations as follows,

                                      ma=Tcos\alpha -f\\\where\\f=kN\\\N+Tsin\alpha=mg\\Thus,\\N=mg-Tsin\alpha

  • Substituting N in f and f in the equation of ma, then we get,

                   ma= Tcos\alpha -k(mg-Tsin\alpha )

  • Substituting values, we get the coefficient of friction as,

                    0=(75*cos35)-k((57*9.8)-(75sin35))\\\\k((57*9.8)-(75sin35))=(75*cos35)\\\\515.6k=61.44\\\\k=\frac{61.44}{515.6}=0.119

Thus, we can conclude that, the coefficient of friction between the sled and the snow is 0.119.

Learn more about the friction here:

brainly.com/question/28107059

#SPJ1

6 0
1 year ago
Read 2 more answers
A 5 kg fish swimming 2 m/s swallows an absent minded 1 kg fish swimming toward it at a velocity that brings both fish to a halt
Gelneren [198K]

Answer:

v = 10 m/s

Explanation:

given,

Mass of large fish, M = 5 Kg

speed of swimming, v' = 2 m/s

mass of small fish, m = 1 kg

speed of the fish = v

using conservation of momentum

m v + M v' = M u' + m u

final speed of both the speed is zero.

- 1 x v + 5 x 2  = 0

negative sign is used because small fish is moving in opposite direction.

now,

v = 10 m/s

hence, the speed of the small fish is equal to 10 m/s.

8 0
3 years ago
Which statement is the correct representation of these electric field lines?
Kipish [7]

Note that the electric field lines begin from the higher voltage to the lower

Because the negative pole is lower voltage than the positive pole

The lines go out the positive charges and go in the negative charges

Then, the correct statement is:

<u>C. Source A is negatively charged and source B is positively charged.</u>

5 0
3 years ago
Read 2 more answers
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