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3 years ago

Why doesn't electric current flow through rubber?

2 answers:

5 0

Rubber is a insulator so current cannot pass through it where as metal is a conductor which allows current to pass through it

ruslelena [56]3 years ago

3 0

As rubber is an insulator or bad conductor current cannot pass

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How much energy must be absorbed by water with a mass of 0.5 kg in order to raise the temperature from 30°C to 65°C? Note: Water

kvasek [131]

Answer:

73325J

Explanation:

Given parameters:

Mass of water = 0.5kg

Initial temperature = 30°C

Final temperature = 65°C

Specific heat capacity = 4190J/kg°C

Unknown:

Amount of energy absorbed = ?

Solution:

The amount of energy absorbed can be derived using the expression below;

H = m c Δt

H is the amount of energy

m is the mass

c is the specific heat

Δt is the change in temperature

H = 0.5 x 4190 x (65 - 30 )

H = 73325J

6 0

3 years ago

What breed is this dog

Basile [38]

Answer: chihuahua

Explanation:

7 0

4 years ago

Read 2 more answers

The principles of ____ law are demonstrated when pressure remains constant, but temperature and volume rise and fall together.

just olya [345]

Answer:

Charles' Law

Explanation:

When pressure is held constant the volume of a mass of gas is directly proportional to its temperature.

4 0

3 years ago

How much energy is stored in a 2.80-cm-diameter, 14.0-cm-long solenoid that has 200 turns of wire and carries a current of 0.800

ozzi

Answer:

The energy stored in the solenoid is 7.078 x 10⁻⁵ J

Explanation:

Given;

diameter of the solenoid, d = 2.80 cm

radius of the solenoid, r = d/2 = 1.4 cm

length of the solenoid, L = 14 cm = 0.14 m

number of turns, N = 200 turns

current in the solenoid, I = 0.8 A

The cross sectional area of the solenoid is given as;

$A = \pi r^2\\\\A = \pi (0.014)^2\\\\A = 6.16*10^{-4} \ m^2$

The inductance of the solenoid is given by;

$L = \frac{\mu_0 N^2A}{l} \\\\L = \frac{(4\pi*10^{-7})(200^2)(6.16*10^{-4})}{0.14}\\\\L = 2.212*10^{-4} \ H$

The energy stored in the solenoid is given by;

E = ¹/₂LI²

E = ¹/₂(2.212 x 10⁻⁴)(0.8)²

E = 7.078 x 10⁻⁵ J

Therefore, the energy stored in the solenoid is 7.078 x 10⁻⁵ J

8 0

3 years ago

Why does petrol vapour gets stucked into the carborator of<br> thecar.

hammer [34]

Answer:vapour gets stuckes into the carburetor when the car engine heat up with continuous acceleration and deceleration.

Explanation:Vapor lock occurs when the car engine gets heat up with continuous acceleration and deceleration. The automobile engine has to work harder during the hot summer days. An automobile engine runs hotter than usual in the stop-go traffic.. This extreme heat vaporizes the fuel in carburetor and fuel pump.

4 0

3 years ago