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Westkost [7]
3 years ago
5

When the switch is open, the model predicts that bulb ___ will have the same brightness as bulb ___. When the switch is closed,

the model predicts that bulb ___ will be brighter than either bulb ___or bulb C. Both bulbs ___ and ___ will have the same brightness when the switch is closed.
Physics
1 answer:
Arte-miy333 [17]3 years ago
6 0

please show me the question paper .( Pic)

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the velocity of an object is given v(t), and the acceleration is given by a(t). what is the relationship between the total
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8 0
1 year ago
A car of m = 1200. kg collides with a tree while traveling 60.0 mph. The collision occurs over a time period of 0.0500 seconds.
MrRissso [65]
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5 0
3 years ago
Read 2 more answers
Hey help me plzzzzz i will mark brainliest​
vodomira [7]

Answer:

The answer to your question is given below.

Explanation:

Mechanical advantage (MA) = Load (L)/Effort (E)

MA = L/E

Velocity ratio (VR) = Distance moved by load (l) / Distance moved by effort (e)

VR = l/e

Efficiency = work done by machine (Wd) /work put into the machine (Wp) x 100

Efficiency = Wd/Wp x100

Recall:

Work = Force x distance

Therefore,

Work done by machine (wd) = load (L) x distance (l)

Wd = L x l

Work put into the machine (Wp) = effort (E) x distance (e)

Wp = E x e

Note: the load and effort are measured in Newton (N), while the distance is measured in metre (m)

Efficiency = Wd/Wp x100

Efficiency = (L x l) / (E x e) x 100

Rearrange

Efficiency = L/E ÷ l/e x 100

But:

MA = L/E

VR = l/e

Therefore,

Efficiency = L/E ÷ l/e x 100

Efficiency = MA ÷ VR x 100

Efficiency = MA / VR x 100

7 0
3 years ago
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