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3 years ago

PLS HELP!!!!! Pls pls pls pls.

Physics

1 answer:

Scilla [17]3 years ago

7 0

Sorry, the picture is all pixilated.hope you do good on whatever that is!

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La biomasa es una fuente de energía es limpia o contaminante

Solnce55 [7]

Answer:

es limpia

Explanation:

4 0

3 years ago

An RLC circuit with a resistor of R\:=\:1 R = 1 k, capacitor ofC\:=\:3 C = 3 F, and inductor ofL\:=\:2 L = 2 H reaches a maximum

frez [133]

Answer:

Magnetic energy stored in the inductor when all of the energy in the circuit is in the inductor = 0.049 mJ

If all the energy is then transferred into the capacitor, the voltage drop across the capacitor = 0.00572 V = 0.01 V (expressed to the hundredths value)

Explanation:

In an RLC circuit with maximum current of 7mA = 0.007 A

When all of the energy is stored in the inductor, maximum current will flow through it,

Hence E = (1/2) LI²

L = inductance of the inductor = 2 H

E = (1/2) (2)(0.007²) = 0.000049 J = 0.049 mJ

When all the energy in the circuit is in the capacitor, this energy will be equal to the energy calculated above.

And for a capacitor, energy is given as

E = (1/2) CV²

E = 0.000049 J, C = 3 F, V = ?

0.000049 = (1/2)(3)(V²)

V = 0.00572 V = 0.01 V

4 0

3 years ago

Which two things does force depend on?

saveliy_v [14]

Answer:

Mass and Gravity

Explanation:

Objects with mass exert forces on each other via the force of gravity. This force is proportional to the mass of the two interacting objects and is inversely proportional to the square of the distance between them.

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3 years ago

Since the density of air decreases with an increase in temperature, but the bulk modulus B is nearly independent of temperature,

Usimov [2.4K]

To develop this problem it is necessary to apply the concept related to the speed of sound waves in fluids.

By definition we know that the speed would be given by

$v=\sqrt{\frac{\beta}{\rho}}$

$\beta =$ Bulk modulus

$\rho =$ Density of air

From the expression shown above we can realize that the speed of sound is <em>inversely proportional</em> to the fluid in which it is found, in this case the air. When the density increases, the speed of sound decreases and vice versa.

According to the statement then, if the density of the air decreases due to an increase in temperature, we can conclude that the speed of sound increases when the temperature increases. <u>They are directly proportional.</u>

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3 years ago

What is the energy of a baby who weighs 20 N sitting on a 1.5 m high chair

guajiro [1.7K]

The energy of the baby is gravitational potential energy, and it is equal to the weight of the baby times its height from the ground:
$U=(mg) h$
where
mg=20 N is the weight (the mass times the gravitational acceleration)
h=1.5 m is the height from the ground
If we plug the numbers into the equation, we find
$U=(mg)h=(20 N)(1.5 m)=30 J$

3 0

4 years ago