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natka813 [3]
3 years ago
12

HELP PLEASE and NO links please give the right answer

Physics
2 answers:
Firlakuza [10]3 years ago
5 0
The tropic of cancer or the tropic of capricorn.
tiny-mole [99]3 years ago
4 0
Answer tropic of cancer
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A 12.0kg microwave oven is pushed 14.0m up the sloping surface of a loading ramp inclined at an angle 37 degrees above the horiz
Semenov [28]

Answer:

Answered

Explanation:

a) What is the work done on the oven by the force F?

W = F * x

W = 120 N * (14.0 cos(37))

<<<< (x component)

W = 1341.71

b) F_f=\mu_k N

F_f=0.25\times12\times9.8

= 29.4 N

W_f= F_f\times x

W_f= 29.0\times 14 cos(37)

W_f= 328.72 J = 329 J

c) increase in the internal energy

U_2 = mgh

= 12*9.81*14sin(37)

= 991 J

d) the increase in oven's kinetic energy

U_1 + K_1 + W_other = U_2 + K_2

0 + 0 + (W_F - W_f ) = U_2 + K_2

1341.71 J - 329 J - 991 J = K_2

K_2 = 21.71 J

e) F - F_f = ma

(120N - 29.4N ) / 12.0kg = a

a = 7.55m/s^2

vf^2 = v0^2 + 2ax

vf^2 = 2(7.55m/s)(14.0m)  

V_f = 14.5396m/s

K = 1/2(mv^2)

K = 1/2(12.0kg)(14.5396m/s)

K = 87.238J

4 0
3 years ago
In general, traffic circles are controlled by __________ .
miskamm [114]
D. Yield signs is the answer
8 0
4 years ago
The potential energy of a pair of hydrogen atoms separated by a large distance .x is given by L/(x) = —C6/x6, where C6 is a posi
ivann1987 [24]

Answer:

Explanation:

The force that one atom exerts on the other is the negative derivative of the potential energy = \frac{-dL(x)}{dx}

F(x) = - \frac{d}{dx}( -C₆ / x⁷) = - (- (-6) C₆ x⁻⁶ ⁻¹) = - 6C₆ /x⁷

when xis negative, F is positive and when x is positive, F is negative. It is therefore and attractive force and F is always directed to the center

4 0
3 years ago
What happens to the wavelength of a wave when the frequency of the wave is doubled but the wave speed stays the same?
slava [35]
Speed= freq x wavelength
if freq is doubled the wavelength will halve for constant speed
5 0
3 years ago
The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the ________.
jeyben [28]

Answer:

<em>Loop of Henle.</em>

Explanation:

<u>Loop of Henle</u><em> is a mechanism that establishes the medullary osmotic gradient, that depends on its important application in day to day life. </em>

Moreover the loop of Henle is very very essential for concentrating the urine, they do not work at all alone. Loop of Henle looks like U shaped and it is long and it is present in birds, reptiles, and as well as mammals.

3 0
4 years ago
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