Question

Помогите решить задачу ,срочно плиз! Паук с массой 1,3 грамма взбирается по паутине. За 20 секунд он поднялся на 74 см .Определите мощность паука.

Answer 1

Тут наверное надо воспользоваться потенциальной энергией
E=mgh=0,0013*10*0,74=0,00962 Дж
N=E/t=0.00962/20=0,000481 Вт=481 мкВт

Answer 2

Problem Analysis

To determine the power of the spider, we need to use the formula:

Power = Work / Time

The work done by the spider can be calculated using the formula:

Work = Force x Distance

In this case, the force can be calculated using the formula:

Force = Mass x Acceleration

Since the spider is moving vertically, the acceleration can be calculated using the formula:

Acceleration = Gravity

Gravity is a constant value, approximately 9.8 m/s^2.

Calculation

Let's calculate the force first:

Force = Mass x Acceleration

Given: - Mass of the spider = 1.3 grams = 0.0013 kg - Acceleration due to gravity = 9.8 m/s^2

Force = 0.0013 kg x 9.8 m/s^2

Now, let's calculate the work done by the spider:

Work = Force x Distance

Given: - Distance climbed by the spider = 74 cm = 0.74 m

Work = Force x 0.74 m

Finally, let's calculate the power of the spider:

Power = Work / Time

Given: - Time taken by the spider = 20 seconds

Power = (Force x 0.74 m) / 20 s

Calculation Results

Let's calculate the values:

Force = 0.0013 kg x 9.8 m/s^2 = 0.01274 N

Work = 0.01274 N x 0.74 m = 0.0094156 J

Power = (0.0094156 J) / 20 s = 0.00047078 W

Answer

The power of the spider is approximately 0.00047078 Watts.

Please note that this calculation assumes that the spider is moving at a constant speed and does not take into account any other factors that may affect the power output.