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Trava [24]
2 years ago
12

Do electrical appliances like heaters, toasters and heating pads have high or low resistance (remember for constant voltage, p =

v^{2} 2 /r)? explain your reasoning.
Physics
1 answer:
Semenov [28]2 years ago
7 0

The correct answer is low resistance.

A heating element's resistance is neither "extremely high" nor "very low." Since the amount of heat produced by the circuit is proportional to the current, the resistance of the heating element must be low enough to draw the necessary current. Thus, low resistance is the general characteristic of electrical devices like warmers, toasters, and heating pads. Any voltage will experience high current if resistance is too low. Current will be low if resistance is too high and voltage is okay. NOTE: Current increases as resistance decreases and decreases as resistance increases while the voltage remains constant, like in an automotive circuit.

Learn more about electrical appliances here :-

brainly.com/question/15081528

#SPJ4

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4 years ago
How do the earth's physical features affect people's activities?
masya89 [10]

Answer:

d.all of the above

Explanation:

The physical feature of the planet Earth affect people's activities in the following manner -  

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4 0
3 years ago
g If you keep the launch angle fixed, but double the initial launch speed, what happens to the range?
kiruha [24]

Answer:

Range will become 4 times of initial range

Explanation:

Let the velocity of projection is u

And angle at which projectile is projected is \Theta

And acceleration due to gravity is g\ m/sec^2

So range of projectile is equal to R=\frac{u^2sin2\Theta }{g}........eqn 1

Now in second case it is given that velocity of launching is doubled

So new velocity u_{new}=2u

So new range will be equal to R_{new}=\frac{(2u)^2sin2\Theta }{g}=\frac{4u^2sin2\Theta }{g} .....eqn 2

Now dividing eqn 2 by eqn 1

\frac{R_{new}}{R}=\frac{4u^2sin2\Theta }{g}\times \frac{g}{u^2sin2\Theta }

R_{new}=4R

So if we double the initial launch speed then range will become 4 times

4 0
4 years ago
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