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Roman55 [17]
3 years ago
7

D

Physics
1 answer:
GenaCL600 [577]3 years ago
7 0

Answer:

I don't know about these problems

Explanation:

I don't know about these problems at all.

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Stars set about how many minutes earlier each day?<br><br> A. 8<br> B. 6<br> C. 4<br> D. 2
Furkat [3]
It is c which is four minutes per day
5 0
3 years ago
In creating his definition of horsepower, James Watt, the inventor of the steam engine, calculated the power output of a horse o
Studentka2010 [4]

Answer:

Part a)

F = 182.3 Lb

Part b)

P = 0.55 HP

Explanation:

Diameter of the circle = 24 ft

Diameter = 731.52 cm = 7.3152 m

now the horse complete 144 trips in one hour

so time to complete one trip is given as

t = \frac{3600}{144} s

t = 25 s

now the speed of the horse is given as

v = \frac{2\pi r}{t}

v = \frac{\pi(7.3152)}{25}

v = 0.92 m/s

Part a)

Now we know that the power is defined as rate of work done

it is given as

P = F v

746 = F(0.92)

F = 810.9 N

F = 182.3 Lb

Part b)

Work done to climb up to 3 m height is given by

W = mgh

now we have

Power = \frac{Work}{time}

P = \frac{mgh}{t}

P = \frac{(70kg)(9.81)(3)}{5.0s}

P = 412.02 Watt

now we know that 1 HP = 746 Watt

so we have

P = \frac{412}{746} = 0.55 HP

8 0
2 years ago
What property appplies to the element radon?
Arlecino [84]
Radioactive element
I. E..,ratio of neutrons is to protons is greater than 1.5
8 0
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What is the magnitude of the external force f necessary to hold the cart motionless at point c?
kodGreya [7K]
The same amount of force that the cart is using nothing more nothing less
5 0
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Two long cylinders of radii 5 cm and 10 cm form a coaxial cylindrical capacitor, the space between them being filled with a diel
V125BC [204]

Answer:

21

Explanation:

8 0
2 years ago
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