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blondinia [14]
3 years ago
12

State the reason why wick lamps are made of cotton

Physics
1 answer:
ad-work [718]3 years ago
6 0

Answer:

<em>Reason:- We use cotton to make the wick of a spirit lamp because cotton has thread strands which act like fine capillaries and help in drawing up a steady supply of oil in the lamp for burning by capillary action</em>

Explanation:

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The reservoir stores 6 500 000 m3 of water. The density of the water is 998 kg/m3. Calculate the mass of water in the reservoir.
Mekhanik [1.2K]

Answer:

Mass = 64,870,000,000 kilograms

Explanation:

Given the following data;

Density = 998 kg/m³

Volume = 6,500,000 m³

To find the mass of water in the reservoir;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

Density = mass/volume

Making mass the subject of formula, we have;

Mass = density * volume

Mass = 998 * 6,500,000

Mass = 64,870,000,000 kilograms

8 0
3 years ago
While pulling a bicycle out of the garage, you must pull it a total of 1.7 m with a force of 27 n. how much work are you doing o
Solnce55 [7]
Work = force in the direction of the movement x  distance = 27 N x 1.7 m

Work = 45.9 joules

Answer: option c.
8 0
3 years ago
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Talia is on a road trip with some friends. In the first 2 hours, they travel 100 miles. Then they hit traffic and go only 30 mil
emmainna [20.7K]
Since Speed, V = Distance/Time
Average speed = Total Distance/Total Time

From the given data, Total Distance = 100 + 30 + 75 miles
and Total Time = 2 + 1 + 1 hours

Average Speed = 205/4
Average Speed = 51.25 mph ( or 51mph to the nearest whole number)
3 0
3 years ago
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A capaitor has two parallel plates sepearted by 2mm and is connected across a 50V battery. i. What is the electric field between
Oduvanchick [21]

Answer:

i E=V/d=50/2*10^-3=25*10^3 N/C

ii It is a (+) and (-)

iii C=εA/d

C=12.56*10^-8 * 0.1/2*10^-4

C=62.83 μF

Q=CV=50*6.283*10^-6

Q=314 μC

iv E=0.5 QV

=0.5(50*314*10^-6)

=7850 μJoule

Explanation:

8 0
3 years ago
In which case is there an induced electromotive force?
Papessa [141]
I think it's B, that's the only case where something is moving. I'm actually doing the quiz right now lol
4 0
3 years ago
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