The energy gaps between the valence and conduction bands are called band gaps. For silicon, the band gap is 1.1 eV; for fused si

In terms of light energy, a higher frequency corresponds to increased energy within the light.

We establish that frequency is essentially the inverse of wavelength:

frequency = 1 / wavelength

Calculating frequencies:

f UVA = 1/320 to 1/400

f UVA = 0.0031 to 0.0025

f UVB = 1/290 to 1/320

f UVB = 0.0034 to 0.0031

Since UVB occupies a higher frequency range, it consequently possesses greater energy than UVA.

Answer:T = 0.03 Nm.

d = 1.5 in = 0.04 m

r = d/2 = 0.02 m

P = 56 kips = 56 x 6.89 = 386.11 MPa

σ = 42 ksi = 42 x 6.89 = 289.58 MPa

To find Torque = T =?

Solution:σ = (P x r) / T

Thus, T = (P x r) / σ

Calculating T = (386.11 x 0.02) / 289.58

results in T = 0.03 Nm.

Answer:

The cooker receives an average energy transfer rate of 1.80 kW.

Explanation:

Given that,

Pressure of the boiling water = 300 kPa

Mass of water = 3 kg

Duration = 30 min

Dryness fraction of the water = 0.5

What is the average energy transfer rate to the cooker?

We know that,

The specific enthalpy of vapor at 300 kPa is

We need to determine the initial state enthalpy of water

We must find the enthalpy of water in the final state

Using the enthalpy formula

Insert the value into the formula

Next, we calculate the energy transfer rate to the cooker

Using the energy rate formula

Substituting the value into the formula

Therefore, the average energy transfer rate to the cooker stands at 1.80 kW.

Answer: Reduced acceleration leads to an increase in mass.

Explanation:

We can rephrase this as:

"When a constant force F is applied, heavier objects experience less acceleration"

As a result, when mass rises, the object's acceleration diminishes.

This is referred to as an inverse correlation between acceleration and mass.

According to Newton's second law, we find that:

F = m*a

Force equals mass multiplied by acceleration.

So, if the force remains constant, we can express it as:

a = F/m.

In this equation, we observe that if acceleration decreases and F stays constant, then the mass m must also rise (as it is found in the denominator)

Therefore, the accurate statement is:

A decrease in acceleration causes the mass to increase.