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kolezko [41]
3 years ago
14

For the circuit in the previous part, with the frequency set at 1 hz, what happens if the inductance of the inductor is increase

d?
Physics
1 answer:
lubasha [3.4K]3 years ago
7 0
The relationship between inductance and frequency can be clearly described using the following equation of inductive reactance:

Xl = 2*pi*f*L ; simplifying:

L = Xl / 2*pi*f

Therefore, as what we saw, inductance and frequency are inversely proportional. To add up, when inductance increases the frequency would decrease.
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A key falls from a bridge that is 45 m above the water. It falls directly into a model boat, moving with constant velocity, that
guapka [62]

Answer:

4m/s

Explanation:

The motion is in downward direction, and the boat is moving with constant velocity, the position of the boat horizontally is 12m before the key fall.

The height difference "h"= ( y- y°)= 45 m

We can determine the needed time the key requires to reach the water using the expression from Newton's law

h= v(o) + 1/2 at^2

g= acceleration due to gravity= 9.8m/s^2

h= v(o) + 1/2 gt^2 -------------------------eqn*)

V(o)= 0 for the key= initial velocity

h= height that the key falls= 45m

If we substitute the above values into eqn(*) we have

We can make t^2 subject of the formula since v(0)= 0

t^2= h/(1/2 g)

= 45/(1/2× 9.8)

t^2= 45/4.9=9.18

t= √9.18

t=3.03 secs

Since the boat was moving with constant velocity,

Then Velocity= distance/ time

= 12/3.03

Velocity= 4m/s

Hence, the speed of the boat is 4m/s

7 0
3 years ago
In a circuit, the supplied voltage is 1.5 volts, and the resistor value is 3 ohms. What is the current in the circuit?
pogonyaev
Using Ohm's Law:

V = IR

Where V = Voltage in Volts, I = Current in Ampere, R = Resistance in Ohms

V = IR

1.5 = I * 3

1.5 = 3I

3*I = 1.5

I = 1.5/3

I = 0.50 A

Current in the Circuit is 0.50 Ampere.
6 0
3 years ago
When Carbon -14 decays into Nitrogen -14, what kind of decay is this?
Nutka1998 [239]

Answer:

me no speak d english

Explanation:

3 0
3 years ago
Two spheres each carry a charge of 1 x 10-7 C. Their centers are separated by
padilas [110]

We have that the force between the two charged objects is mathematically given as F=2.349N

The magnitude of the force between two charged objects.

Given,

Question Parameters:

Two spheres carry a charge of 1x10^-7 C.

Their centers are separated by 0.7m.

Generally, the equation for the Force is mathematically given as

$$F=^{\fra\frac{q 1 q 2} {4 * \pi e * \tau}$$

Therefore

$$F=^\frac{(1 e-7)^{2}}{9 e 9 * 0.7}$$

F=2.349N

<h3>What is magnitude?</h3>

In mathematics, the magnitude or size of a mathematical entity is a property that determines whether the object is bigger or slighter than different things of the same kind. Additional formally, an entity's magnitude is the declared result of an ordering —of the class of things to which it belongs.

To learn more about<u> magnitude</u>, refer to:

brainly.com/question/24468862

#SPJ9

8 0
2 years ago
A velocity selector has a magnetic field of magnitude 0.28 T perpendicular to an electric field of magnitude 0.48 MV/m.(a) What
NARA [144]

Answer:

a) v = 1,714 10⁶ m / s , b)   K = 13.37 10⁻¹⁹ J , c)   K= 8.36 eV

Explanation:

a) A speed selector uses an electric force and a magnetic force that opposes it, so we can use the equilibrium equation

       F_{e} - F_{e} = 0

       F_{e} = F_{m}

      q E = q v B

      E = v B

      v = E / B

Let's calculate

     v = 0.48 10⁶ / 0.28

     v = 1,714 10⁶ m / s

b) the energy of the particles is kinetic energy

     K = ½ m v2

The mass of the proton is

    mp = 1.67 10⁻²⁷ kg

     K = ½ 1.67 10⁻²⁷ (1,714 10⁶)²

     K = 2.46 10⁻¹⁵ J

Let's reduce

    K = 2.45 10⁻¹⁵ J (1eV / 1.6 10⁻¹⁹J)

    K = 1.53 10⁴ eV

   K = 15.3 KeV

The mass of the electron

    me = 9.1 10-31 kg

     K = ½ 9.1 10⁻³¹ (1,714 10⁶)²

     K = 13.37 10⁻¹⁹ J

Let's reduce

    K = 13.37 10⁻¹⁹ J (1eV / 1.6 10⁻¹⁹ J)

    K= 8.36 eV

4 0
3 years ago
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