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boyakko [2]
3 years ago
5

Please help me with question 16 and question 17 . Thank you

Physics
1 answer:
liberstina [14]3 years ago
7 0

Answer:

JADGLHYKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKkkkkkkkkkkkk

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A dog exerts a force of 30N to move a wagon 2m in 5s. What is the power of the dog
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Explanation:

power=f×v. recall= distances/ time

= f× d/t

= 30 × 2/5

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3 years ago
The third floor of a house is 8m above street level. How much work is needed to move a 136kg refrigerator to the third floor?
jonny [76]

m = Mass of the refrigerator to be moved to third floor = 136 kg

g = Acceleration due to gravity by earth on the refrigerator being moved = 9.8 m/s²

h = Height to which the refrigerator is moved  = 8 m

W = Work done in lifting the object

Work done in lifting the object is same as the gravitational potential energy gained by the refrigerator. hence

Work done = Gravitation potential energy of refrigerator

W = m g h

inserting the values

W = (136) (9.8) (8)

W = 10662.4 J



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3 years ago
Jana is observing a young autistic boy in a preschool classroom. Her job is to note each time the boy gets up from his chair wit
svp [43]
The answer is tallying
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3 years ago
A car is traveling around a horizontal circular track with radius r = 220 m at a constant speed v = 16 m/s as shown. The angle θ
iogann1982 [59]
Velocity = distance / time = ( 2 * pi * r ) / t = 20.583 m/s 

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3 years ago
How much work is done in holding a 20 N sack of potatoes while waiting in line at the
Yuki888 [10]

Answer: A

Explanation:

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