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Anna35 [415]
3 years ago
10

A girl weighing 500 Newtons takes 50 seconds to climb a flight of stairs 18 meters

Physics
1 answer:
maxonik [38]3 years ago
8 0

Answer:

180Watts

Explanation:

Power = Force * distance/Time

Given

Force = 500N

Distance = 18m

Time t = 50secs

Substitute into the formula

Power = 500*18/50

Power = 10 * 18

Power = 180Watts

Hence her power output vertically is is 180Watts

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Which of the following are not examples of circular motion? Check all that<br> apply
CaHeK987 [17]

B.riding on a ferris wheel

E.a satellite orbiting the Earth

Explanation:

A person riding on a ferris wheel and a satellite orbiting the earth both depicts circular motion.

Circular motion is the motion of a body about a fixed axis or center.

  • The motion path of the body forms a circle around the center.
  • In circular motion, the travel path is along a circle.
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Other options gives other types of motion.

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circular motion brainly.com/question/2562955

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3 years ago
From an ethical standpoint, which best describes why new biotechnology products should be tested extensively before they are all
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Which of the following will cause an increase in gas pressure in a closed container? A. Lowering the temperature B. Reducing the
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5 0
3 years ago
Read 2 more answers
The plates of a parallel-plate capacitor are 700 cm2 in area and 0.3 cm apart. The potential difference between the plates is 93
Kisachek [45]

Answer: a) E = 311,666.7 V/m, b) q = 1.54×10^-10c, c) F = 4.799×10^-5 N, d) 0.0629 J

Explanation:

Area = 700cm² = (700/100)² = 7² = 49m²

Distance between plates (d) = 0.3cm = 0.3/100 = 0.003 m

V = potential difference = 935v

A)

Recall that for a capacitor that V = Ed

Where E = strength of electric field.

935 = E× 0.003

E = 935/ 0.003

E = 311,666.7 V/m

B)

C =qV

Where q = magnitude of charge on capacitor.

We need to get the value for C before we can get for q.

C =ε0×A/d

Where ε0 =permittivity of free space = 8.85×10^-12

Hence we have that

C = 8.85×10^-12 × 49/ 0.003

C = 4.32×10^-10/0.003

C = 1.44×10^-7 F

But C=qV

1.44×10^-7 = q (935)

q = 1.54×10^-10c

C)

F=Eq

Where E = strength of electric field = 311,666.7 V/m, q = 1.54×10^-10c

F = 311,666.7 × 1.54×10^-10

F = 4.799×10^-5 N

D)

Total energy stored = cv²/2

Total energy = 1.44×10^-7 × 935²/2

Total energy = 0.0629 J

4 0
3 years ago
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