Welcome to Westonci.ca, your go-to destination for finding answers to all your questions. Join our expert community today! Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately.
Sagot :
Answer:
Explanation:
Work Done (W):
The work done to lift the books is equal to the gravitational potential energy gained. We can calculate it using the formula: [ W = mgh ] where:
(m) is the mass (which we can find from the weight, as (F = mg))
(g) is the acceleration due to gravity (approximately (9.81 , \text{m/s}^2))
(h) is the height (given as 7 meters)
Plugging in the values: [ W = (10 , \text{N}) \cdot (7 , \text{m}) = 70 , \text{Joules} ]
Power (P):
Power is the rate at which work is done. It’s given by: [ P = \frac{W}{t} ] where:
(W) is the work done (which we calculated as 70 J)
(t) is the time taken (given as 50 seconds)
Plugging in the values: [ P = \frac{70 , \text{J}}{50 , \text{s}} = 1.4 , \text{watts} ]
Thank you for choosing our service. We're dedicated to providing the best answers for all your questions. Visit us again. Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. Westonci.ca is your go-to source for reliable answers. Return soon for more expert insights.
