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3 years ago

Solution A- pH of 5 Solution B- pH of 11 Solution C- pH of 7 Acidic Basic Neutral

Physics

1 answer:

vredina [299]3 years ago

7 0

Answer:

Solution A- pH of 5 (Acidic)

Solution B- pH of 11 (Basic)

Solution C- pH of 7 (Neutral)

Explanation:

The value of pH of a solution tells its degree of acidity or alkalinity. pH values range from 0 to 14 where:

- any pH value below 7 is said to be acidic

- any pH value at 7 is said to be neutral

- any pH value above 7 is said to be basic

Thus, Solution A is Acidic; Solution B is Basic; Solution C is Neutral.

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The diagram shows how Earth is tilted on its axis as it revolves around the Sun. What is the season in the United States when Ea

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Winter

It is winter because the Northern Hemisphere is not facing the sun.

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3 years ago

how long would it take for a resultant upward force of 100N to increase the speed of 50kg object from 100m/s to 150m/s

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Answer:

25 sec

Explanation:

F = ma

100 = 50 a

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2 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:

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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

$P = F v$

$746 = F(0.92)$

$F = 810.9 N$

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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

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3 years ago

A coil of area 0.320 m2 is rotating at 100 rev/s with the axis of rotation perpendicular to a 0.430 T magnetic field. If the coi

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Answer:

The maximum emf generated in the coil is 60527.49 V

Explanation:

Given;

area of coil, A = 0.320 m²

angular frequency, f = 100 rev/s

magnetic field, B = 0.43 T

number of turns, N = 700 turns

The maximum emf generated in the coil is calculated as,

E = NBAω

where;

ω is the angular speed = 2πf

E = NBA(2πf)

Substitute in the given values and solve for E

E = 700 x 0.43 x 0.32 x 2π x 100

E = 60527.49 V

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3 years ago

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3 years ago

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