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3 years ago

Compute the reactance of a 0.450 h inductor at the frequency of 60.0 hz.

Physics

1 answer:

jolli1 [7]3 years ago

4 0

Answer:

169.65 Ω

Explanation:

Given:

Inductance L = 0.450 H

Frequency F = 60.0 Hz

Inductive reactance $X_{L}$ = ωL

ω is the angular frequency = 2πf

∴ Inductive reactance $X_{L}$ = 2πfL

Substituting the values of frequency f, inductance L and constant π into the equation above;

$X_{L}$ = 2× π × 60 × 0.450

Inductive reactance $X_{L}$ = 169.65 Ω

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Help! PROJECTILE PROBLEM: A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25

dsp73

Here,

height at failure, h1 = 525 m,
upward acceleration, a = 2.25 m/s^2,
velocity = v m/s,

SO, 

v^2 = 2*a*h = 2*2.25*525 = 2362.5 
Now, acceleration, g = 9.8 m/s^2,

SO, 

heigt, h1 = v^2/2g = 2362.5 / 2*9.8 = 120.54 meters 
Hence,

a) 
Total height = 525+120.54 = 645.54 meters

b)
time, for h1, t = v/g = sqrt(2362.5)/9.8 = 4.96 sec

---------------------------------

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4 0

4 years ago

Read 2 more answers

Volume of an block is 5 cm3. If the density of the block is 250 g/cm3, what is the mass of the block ?

wlad13 [49]

Answer:

The mass of the block is 1250g.

Explanation:

Given that the formula for density is ρ = mass/volume. Then you have to substitute the values into the formula :

$ρ = \frac{mass}{volume}$

Let density = 250,

Let volume = 5,

$250 = \frac{m}{5}$

$m = 250 \times 5$

$m = 1250g$

7 0

3 years ago

What is de Broglie's hypothesis ? Make sure to be specific (qualitative and quantitative)

victus00 [196]

Answer and Explanation:

DE BROGLIE 'S HYPOTHESIS :

According to De broglie the matter have dual nature it can behave as particle as well as wave
According to this hypothesis all matter have wave like property and having wavelength.
The de broglie wavelength is given by $\lambda =\frac{h}{P}$ here h is plank's constant and P is momentum
This hypothesis determines the probability of finding the object at a give point

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3 years ago

Many particles, such as dust, are inhaled when people breathe. Which part of the respiratory system filters out the majority of

sergey [27]

Answer:

A: Nose

Explanation:

Because your nose has mucus covered hairs that catch some of the dust particles that you inhale.

8 0

3 years ago

Suppose a clay model of a koala bear has a mass of 0.205 kg and slides on ice at a speed of 0.720 m/s. It runs into another clay

Westkost [7]

Answer:

Final velocity, v = 0.28 m/s

Explanation:

Given that,

Mass of the model, $m_1=0.205\ kg$

Speed of the model, $u_1=0.72\ m/s$

Mass of another model, $m_2=0.32\ kg$

Initial speed of another model, $u_2=0$

To find,

Final velocity

Solution,

Let V is the final velocity. As both being soft clay, they naturally stick together. It is a case of inelastic collision. Using the conservation of linear momentum to find it as :

$m_1u_1+m_2u_2=(m_1+m_2)V$

$V=\dfrac{m_1u_1+m_2u_2}{(m_1+m_2)}$

$V=\dfrac{0.205\times 0.72+0.32\times 0}{(0.205+0.32)}$

V = 0.28 m/s

So, their final velocity is 0.28 m/s. Hence, this is the required solution.

6 0

3 years ago