Do you get the same answer if you drive 1.0x10²km at each of the two speeds

Answer:

SI unit for Joule per second is .

Explanation:

When a distance of 35 m is multiplied by a force of 27 N.

Force × distance = 27 N × 35 m = 945 Joule

945 Joule = 945

945 joule = 945

This is SI unit for force multiplied by distance.

The above quantity is divided by 5 s.

= 189

SI unit for Joule per second is .

Answer:

Explanation:

Here first we multiplied the force with the distance so we have

F = 27 N

distance = 35 m

so the product is given as

now we have to divide it by time

so we have

so it is

Answer:

1,803,036.67 W

Explanation:

Data provided in the question:

People per hour that can be moved by lift = 49800

Height of movement, h = 190 m

Average mass per person = 70 kg

Now,

Power = Rate of doing work

Thus,

Power = ΔU

= mgh

here,

m = total mass

g = acceleration due to gravity

or

Power =  (70kg × 49800)(9.8)(190)

or

Power = 6,490,932,000 J per hour

also,

Watt = Joule/second

Therefore,

Power = 6,490,932,000 ÷ 3600

= 1803036.67 W

Final answer:

To estimate the maximum total power needed for Squaw Valley ski area to move 49800 people per hour on their lifts, we calculate the work done per person per hour and then divide it by the time taken to travel vertically by 190 m. The estimated maximum total power needed is 3.31 x 10^8 W.

Explanation:

To estimate the maximum total power needed to move 49800 people per hour on a skilift at Squaw Valley, we can calculate the work done per person per hour and then divide it by the time taken to travel vertically by 190m. The work done is equal to the potential energy gained, which is given by the formula mgh, where m is the average mass per person (70 kg), g is the acceleration due to gravity (9.8 m/s^2), and h is the vertical height gained (190 m). Multiplying this by the number of people per hour gives us the total work done per hour. Dividing this by the time taken to travel the vertical height gives us the maximum power needed. The power is given by the formula P = W/t, where W is the work done and t is the time taken.

Using the given values, we have:

Work done per person per hour: (70 kg) x (9.8 m/s^2) x (190 m) = 128660 J

Total work done per hour: 128660 J x 49800 = 6.40 x 10^9 J

Time taken to travel vertically by 190m: 190 m / (9.8 m/s^2) = 19.39 s

Maximum power needed: (6.40 x 10^9 J) / (19.39 s) = 3.31 x 10^8 W

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Answer:

No

Explanation:

The statement is implying that if you do a certain amount of work, you're entitled to do a certain amount of work. Sometimes, work doesn't entitle you a reward.  

Final answer:

Taking the stairs does not justify eating a whole 'Chocolate Fondue for Two' from a health perspective. The calories burned climbing stairs would not offset the number of calories consumed from the chocolate.

Explanation:

This question appears to be related more towards the subject of Health and nutritional decisions. Eating an entire 'Chocolate Fondue for Two' by yourself due to taking the stairs instead of the elevator does not necessarily justify the act from either a health or dietary perspective. While taking the stairs can increase your physical activity and burn some calories, the amount burned would not be significant enough to counterbalance the high calorie intake from consuming 1lb of dark chocolate. An average individual may burn around 10 calories for every minute they spend climbing stairs, which would not make up for the roughly 2,200 calories present in a pound of dark chocolate.

Learn more about Calorie Intake and Expenditure here:

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