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nadya68 [22]
3 years ago
10

The process of losing heat that does not

Physics
2 answers:
Alborosie3 years ago
5 0
What’s the question ?
Shalnov [3]3 years ago
3 0

Answer:

heat

Explanation:

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If we decrease the amount of force applied to an object, and all other factors remain the same, the amount of work completed wil
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A ) decrease.
B ) increase.
C ) increase, then decrease.
D ) not change.

The answer is A) decrease

Take pushing a box, for example-- You  push your hardest then give out, still trying to push the box. You are doing less work than what you have started with!

( Mind marking me for branliest? ; ) )
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3 years ago
An endangered species is a species that has died out and no individuals are left. True or false
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Answer:

the answer is false... ....

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3 years ago
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In designing subway trains and stations, engineers want to optimize the time and energy use between stations. A train can comfor
lukranit [14]

Answer:

Explanation:

Let the time required for acceleration a₁ and deceleration a₂ be t₁ and t₂ .

Since final velocity during acceleration and initial velocity during deceleration are same

a₁ t₁ = a₂ t₂

5t₁ = 2 t₂ ------------------------------------------ ( 1 )

Distance travelled during acceleration = 1/2 a₁t₁²

= 1/2 x 5 x t₁² = 2.5 t₁²

Distance travelled during deceleration = 1/2 a₂t₂²

= 1/2 x 2 x t₂² = t₂²

Total distance travelled = 2 miles = 2 x 1760 x 3 ft = 10560

2.5 t₁² + t₂² = 10560

2.5 ( 2t₂ / 5  )² + t₂² = 10560

.4 t₂² + t₂² = 10560

1.4 t₂² = 10560

t₂ = 86.85 s

t₁ = 2t₂ / 5 = 34.75 s

t₁ + t₂ = 121.6 = 122 s

Total time taken = 122 s .

maximum velocity = a₁t₁

= 5 x 34.75 = 173.75 = 174 m/s .

4 0
3 years ago
How do two positive electric charges react to each other?
vodka [1.7K]

Answer:

The two positive electric charges repel each other. If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. As a result opposite charges attract each other: The electric field and resulting forces produced by two electrical charges of opposite polarity.

Explanation:

Hope this helps!

-PBvibes

<3

3 0
3 years ago
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5. A boy rides his skateboard 50 meters (m) West. Then he turns around
Ann [662]

Answer:

-30 m

Explanation:

50-20 but the direction is going west so it’s negative

5 0
3 years ago
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