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Andrews [41]
4 years ago
13

Complete this paragraph regarding dangers from the Sun.

Physics
2 answers:
Firlakuza [10]4 years ago
8 0

Answer:

[1]. b

[2].c

[3].a

[4].b

Explanation:

plato

i just took the test

Ganezh [65]4 years ago
4 0

Answer:

1: B. High-frequency

2:C. Satelites

3:A. Spacecraft

4:B. geomagnetic storms

i just took the test on PLATO

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Compare and contrast three types of mountains that result from plate movements.
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They’re right that is the answer
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A ball is shot straight up from the surface of the
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A ) The displacement:
d = v o t - (gt²) / 2 = 
= 19.6 m/s × 1 s - ( 9.8 m/s² x 1 s² ) / 2 = 
= 19.6 m - 4.9 m = 14.7 m
b ) v = v o - g t
0 = 19.6 m/s - 9.8 t    ( when the ball is at the highest point )
9.8 t = 19.6
t = 19.6 : 9.8
t = 2 s
h = v o t - (gt²)/2 = 19.6 x 2 - ( 9.8 x 4 ) / 2 = 39.2 - 19.6
h = 19.6 m
c ) h = gt² / 2
19.6 = 9.8 t²/2
9.8 t² = 39.2
t² = 39.2 : 9.8
t² = 4
t 2 = 2 s   ( and we know that t 1 = 2 s )
t = t 1 + t 2 = 2 s + 2 s = 4 s 
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3 years ago
What kind of scientist investigation involve making observations
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When you study animals.
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4 years ago
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Ryan hypothesizes that darker colors heat up faster. he places a thermometer inside a red wool sock, a green cotton glove, and a
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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
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