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jonny [76]
3 years ago
10

Science Question

Physics
2 answers:
Daniel [21]3 years ago
8 0
1 Is correct because James is going faster.
2 is correct because a faster speed on a position vs time graph will have a steeper slope
3 is correct as well.

The answer is 4 all of the above
Korvikt [17]3 years ago
6 0

Answer:

THE CORRECT ANSWERS ARE

1.

2.

AND

3.

@WrappinUp

Explanation:

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A bus took 8 hours to travel 639 km. For the first 5 hours, it
vladimir1956 [14]

Answer:

93 km/h

Explanation:

Given that a bus took 8 hours to travel 639 km. For the first 5 hours, it travelled at an average speed of 72 km/h

Let the first 5 hours journey distance = F

From the formula of speed,

Speed = distance/time

Substitute speed and time

72 = F/5

F = 72 × 5 = 360 km

The remaining distance will be:

639 - 360 = 279km

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Therefore, the average speed for the remaining time of the journey is equal to 93 km/h

8 0
3 years ago
This was observed in 1997 what is it
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3 years ago
Read 2 more answers
BRAINLIESTTT!! HELP ME!!!
likoan [24]

The efficiency of the scissor is 200%.

<u>Explanation:</u>

Efficiency is defined as the ratio of output of any instrument or device or machine to the input supplied to it. So the greater the output the greater will be the efficiency of the device.

As here the work done by us on the system is said to be 10 J so this will be equal to the input work done on the system. And the work done by the system i.e., the scissor is 20 J, so this will be the output work.

So, the efficiency is the ratio of output to input as shown below.

Efficiency = (\frac {20} {10} ) \times 100 = 200

So, the efficiency of the scissor is 200%.

6 0
3 years ago
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