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3 years ago

The difference in ________ of p and s waves provides a method for determining the epicenter of an earthquake.

Physics

1 answer:

BaLLatris [955]3 years ago

3 0

<span>velocities is the answer</span>

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What are examples of non mechanical energy

ExtremeBDS [4]

Atoms, molecules, electrons, photons, protons etc.

3 0

3 years ago

If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.69 rev/s , friction in

Sindrei [870]

Answer:

magnitude of the frictional torque is 0.11 Nm

Explanation:

Moment of inertia I = 0.33 kg⋅m2

Initial angular velocity w° = 0.69 rev/s = 2 x 3.142 x 0.69 = 4.34 rad/s

Final angular velocity w = 0 (since it stops)

Time t = 13 secs

Using w = w° + §t

Where § is angular acceleration

O = 4.34 + 13§

§ = -4.34/13 = -0.33 rad/s2

The negative sign implies it's a negative acceleration.

Frictional torque that brought it to rest must be equal to the original torque.

Torqu = I x §

T = 0.33 x 0.33 = 0.11 Nm

5 0

3 years ago

Which set of terms represent mechanical waves?

Helga [31]

Energy that transfers through the medium

4 0

3 years ago

Dish-shaped reflectors are used to steer microwaves in order to establish communications links between nearby buildings. Those r

Ad libitum [116K]

A "screen" or even just a set of parallel bars are highly reflective to electromagnetic waves as long as the open spaces are small compared to the wavelengths.

"Grid" dishes work fine ... with less weight and less wind resistance ... for frequencies below about 3 GHz. (Wavelengths of at least 10 cm.)

(I even worked on a microwave system in South America where huge grid dishes were used on a 90-mile link.)

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2 years ago

Describe the relationship between the pressure and volume of a gas when temperature and mass are constant

mr_godi [17]

Answer:

The product of Pressure and Volume is a constant.

Explanation:

We know the Ideal gas equation,

PV = nRT,

where,

P - Pressure of the gas

V - Volume of the gas

n - No. of moles of the gas taken

R - Universal Gas Constant.

T - Temperature of the gas.

We know that , n = $\frac{wt}{Mwt}$

where, wt - Mass of gass ; Mwt - Molecular weight of the gas.

We are given the weight of the gas remains constant (wt is a constant)

Therefore as n = $\frac{wt}{Mwt}$ ,(where both wt and Mwt are constants)

n is a constant in this process.

Universal gas constant is a constant

Given temperature is a constant.

Therefore,

As, PV = nRT, (where n,R,T are constants),

PV is a constant.

Therefore we can say,

PV = k, for some constant k.

If we plot a graph for P vs V , we get a Rectangular Hyperbola( One of the general forms of a Rectangular Hyperbola is xy = c)

5 0

3 years ago