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zaharov [31]
2 years ago
7

A 500 Kg load is lifted through a vertical height of 10m in 25s by a crane. Calculate the power of the crane

Physics
1 answer:
denis23 [38]2 years ago
8 0

Answer:

1962 W

Explanation:

P = W/t

P = F d cos theta / t

P = (500 kg) (9.81 m/s^2) (10 m) (cos 180) / 25 s  <-- the displacement and the force act in opposite directions (but it doesn't matter because direction doesn't matter in this case)

P = 1962 W

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patriot [66]

Answer:

Technician B only is correct

Explanation:

Here we have that the multiple discharge ignition system is a system that fires the spark plug multiple times during each power stroke to provide ample spark to complete the ignition. Therefore,  technician A is not correct.

The dual spark plug ignition system is a method if obtaining the ideal combustion and improved fuel consumption than a single spark plug ignition system.

Therefore, only technician B is correct.

7 0
4 years ago
State how you agree or disagree with the following statement. A good circuit cannot have internal resistance.​
Rashid [163]

Answer: I do

Explanation:

Resistance opposes current thereby reducing the amount of current that flows through a circuit. In other words, it leads to a loss of electrical energy.

Ideally speaking, a good circuit should have no internal resistance as this would lead to more energy having to be supplied to overcome that resistance. External resistance however, is not a bad thing. For instance, oxygen being removed from lightbulbs.

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3 years ago
. A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base jun
Elodia [21]

Explanation :

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A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base junction is forward biased.

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6 0
3 years ago
Read 2 more answers
On an unknown planet in the outer-reaches of the solar system, a pendulum with a 12 g bob and a string length of 4 m oscillates
11Alexandr11 [23.1K]

The acceleration due to gravity (g) on this planet is 39.44 m/s²

<h3>What is solar system?</h3>

Solar system consists of all the planets and the most importantly the center of the solar system is Sun.

Given is an unknown planet in the outer-reaches of the solar system, a pendulum with a 12 g bob and a string length of 4 m oscillates with a period of 2 seconds.

The time period of the pendulum is

T = 2π √l/g

Squaring both sides, we get

l/g = T² / 4π²

g = 4π²l/ T²

Substitute Time period T = 2s and  length l = 4m,  we get

g = 4π²x 4/ 2²

g =39.44 m/s²

Thus, the acceleration due to gravity on this planet is 39.44 m/s²

Learn more about solar system.

brainly.com/question/12075871

#SPJ1

3 0
2 years ago
Some sharks can swim at average cruising speeds of three miles per hour. If a shark swam at that average speed for seven hours,
kari74 [83]

Answer:

21 miles

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3 miles an hour for 7 hours

Its simply 7m*3m/hr=21 miles

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