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kobusy [5.1K]
3 years ago
10

If 3,600 J of work is done in 3.0 s, what is the power?

Physics
2 answers:
CaHeK987 [17]3 years ago
6 0
The power when 3600 J is done in 3 secs is 1200W
zlopas [31]3 years ago
6 0
What's the answer choices?
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Four multiple choice science questions.
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3 years ago
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Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, t
NemiM [27]

Answer:

their final velocity is 0.091 m/s

Explanation:

Given;

mass of the first train, m₁ = 138,000 kg

mass of the second train, m₂ = 123,000 kg

initial velocity of the first train, u₁ = 0.288 m/s

initial velocity of the seocnd train, u₂ = -0.131 m/s (opposite direction to the first)

Let their common final velocity after been coupled = v

Apply the principle of conservation of linear momentum;

m₁u₁  +  m₂u₂ = v(m₁  +  m₂)

(138,000 x 0.288)    +    (-0.131 x 123,000)   =   v(138,000 + 123,000)

39,744   -   16,113   =  v(261,000)

23,631 = v(261,000)

v = 23,631 / 261,000

v = 0.091 m/s

Therefore, their final velocity is 0.091 m/s

5 0
3 years ago
Does static electricity attract dead skin cells
lesantik [10]

Answer:

no i dont think so

Explanation:

6 0
3 years ago
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. If the plane is traveling hori
11111nata11111 [884]

Answer:

481 m

Explanation:

To fall 235 m, the time required is

t = √(2H/g)

t= √(2\times235/9.8)

t=6.92 seconds.

The supplies will travel forward

6.92 \times 69.4 ≈ 481 m

Therefore, the goods must be dropped 481  m in advance of the recipients.

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according to newtons second law of motion, when an object is acted on by an unbalanced force, how will that object respond?
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When an object is acted on by an unbalanced force, then that object will accelerate.
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