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Alinara [238K]
3 years ago
9

**WRITE SHORT ANSWER**

Physics
2 answers:
Ierofanga [76]3 years ago
8 0

WRITE ONE ADVANTAGE AND ONE DISADVANTAGE OF ALCOHOL AS A LIQUID USED IN THERMOMETERS

Advantage: Alcohol has a high expansivity.

Disadvantage: Alcohol is not opaque, this may give wrong temperature readings.

DIFFERENCE IN FORCES BETWEEN SOLID AND GAS PARTICLES :

Answer: Solids have stronger intetmolecular forces of attraction than gases.

TWO FACTORS TO INCREASE RATE OF EVAPORATION IN LIQUID :

Answer: Decreasing the volume of the container containing the liquid. This will increase vapour pressure as well the rate of evaporation .

ladessa [460]3 years ago
7 0

Answer:

WRITE ONE ADVANTAGE AND ONE DISADVANTAGE OF ALCOHOL AS A LIQUID USED IN THERMOMETERS

Advantage: Alcohol has a high expansivity.

Disadvantage: Alcohol is not opaque, this may give wrong temperature readings.

DIFFERENCE IN FORCES BETWEEN SOLID AND GAS PARTICLES :

Answer: Solids have stronger intetmolecular forces of attraction than gases.

TWO FACTORS TO INCREASE RATE OF EVAPORATION IN LIQUID :

Answer: Decreasing the volume of the container containing the liquid. This will increase vapour pressure as well the rate of evaporation .

.

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The modulus of elasticity for a ceramic material having 4.7 vol% porosity is 317 GPa. (a) Calculate the modulus of elasticity (i
elena-s [515]

Answer:

The answer is below

Explanation:

a) Given that the modulus of elasticity (E) = 317 GPa, to find the modulus of elasticity (in GPa) for the nonporous material (E_o), we use the formula:

E_0=\frac{E}{1-1.9P+0.9P^2}\\\\where\ P=4.7\%=0.047,hence:\\\\ E_0=\frac{317}{1-1.9(0.047)+0.9(0.047)^2}\\\\E_0=347.3\ GPa

b) If the porosity P = 11.1%, then the modulus of elasticity is:

E=E_0(1-1.9P+0.9P^2)=347.3(1-1.9(0.111)+0.9(0.111)^2)=278\ GPa

5 0
3 years ago
Pls help!!<br> 1 example of a conductor and 1 example of a insulator in your EVERYDAY world.
satela [25.4K]

Answer:

Conductors:Aluminum, copper, car cables

Insulator: rubber, glass

6 0
3 years ago
Consider a metal single crystal oriented such that the normal to the slip plane and the slip directions are at angles of 43.1° a
Bond [772]

Answer:

resolve shear stress = 22 MPa

Explanation:

Given data

slip plane α = 43.1°

slip directions β = 47.9°

shear stress = 20.7 MPa (3,000 psi)

applied stress =45 mPa (6,500 psi)

to find out

what stress will be necessary

solution

we know that

resolve shear stress = aplied stress × cosα ×  cosβ

resolve shear stress = 45 × cos(43.1) ×  cos(47.9)

resolve shear stress = 22 MPa

we can say that here single cristal will be yield

because resolve shear stress is bigger than critical shear stress

3 0
4 years ago
A solenoid that is 66.1 cm long has a cross-sectional area of 13.8 cm2. There are 1410 turns of wire carrying a current of 8.01
Ymorist [56]

Answer:

a) Energy density of the magnetic field, u = 183.46 J/m³

b) Total energy, E = 0.167 J

Explanation:

a) Number of turns in the solenoid, N = 1410

Area, A = 13.8 cm² = 0.00138 m²

Current, I = 8.01 A

Length of the solenoid, l = 66.1 cm = 0.661 m

Energy density, u is given by the formula u = \frac{B^2}{2 \mu_{0} }

Where B is the magnetic field

The magnetic field in a solenoid is given by the formula, B = \frac{N \mu_{0} I }{l}

B = \frac{1410 * 8.01* \mu_{0}  }{0.661}

B = 17086.38 \mu_0 T

u = \frac{(17086.38 \mu_0)^2}{2 \mu_{0} }\\u = \frac{291944527.29 \mu_0^2}{2 \mu_{0} }\\u = \frac{291944527.29 \mu_0}{2  }\\u = \frac{291944527.29 * 4\pi * 10^{-7} }{2  }\\u = 183.46 J/m^3

b) The total energy = Energy density * Volume

E = u V

Volume = Area * Length

V = Al = 0.00138 * 0.661

V = 0.00091218 m³

E = 183.46 * 0.00091218

E = 0.167 J

4 0
3 years ago
What do pressure and temperature determine about a gas
NikAS [45]

Answer:

With Boyle's law we have that for a constant temperature and gas quantity the pressure of a gas multiplied by its volume is also constant: This means that under the same temperature, two gases with equal quantity of molecules and equal volume must also have the same pressure, as well as that two gases with equal quantity and pressure must have the same volume.

Explanation:

8 0
3 years ago
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