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OverLord2011 [107]
2 years ago
12

Dan is 50 years old, is beginning to look back at the successes and failures in his life, and hopes to use this reflection to de

cide on his next steps. What is he experiencing? A. Middlescence B. Empty Nest C. Midlife Crisis D. Mastery
16 ​
Physics
2 answers:
Lelechka [254]2 years ago
4 0

Answer:

answer is A

middlelesence

Explanation:

Mice21 [21]2 years ago
3 0

Answer:

C. Midlife Crisis.

Explanation:

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mixer [17]

Heat used by electric heater :

Q = m • c • ∆T

Q = (75 kg)(4200 J/kg°C)(43°C - 15°C)

Q = 8.82 × 10⁶ J

Cost of electrical energy :

Cost = (8.82 × 10⁶ J)/(3.6 × 10⁶ J) • ($ 0.15)

Cost = $ 0.3675

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2 years ago
A plane mirror of circular shape with radius r=20cm is fixed to the ceiling. A bulb is to be placed on the axis of the mirror. A
KIM [24]

Answer:

0.75 m

Explanation:

Let's call the distance between the bulb and the mirror x.

The bulb and the length of the mirror form a triangle.  The mirror and the illuminated area on the floor form a trapezoid.  If we extend the lines from the mirror edge to the reflected image of the bulb, we turn that trapezoid into a large triangle.  This triangle and the small triangle are similar.  So we can say:

x / 0.4 = (3 + x) / 2

Solving for x:

2x = 0.4 (3 + x)

2x = 1.2 + 0.4 x

1.6 x = 1.2

x = 0.75

So the bulb should located no more than 0.75 m from the mirror.

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3 years ago
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