1. The photon energy for light of wavelength 500 nm is approximately (Show your work).1.77 eV
3.10 eV
6.20 eV
2.48 eV
5.46 eV

2. Which of the following colors is associated with the lowest temperature? Explain your reasoning.
A. Blue
B. Green
C. Yellow
D. Red

3. Which of the following colors has the highest photon energy?
A. Blue
B. Green
C. Yellow
D. Red
Explain your reasoning.

Answers

Answer 1

Answer: 1)
E=hf=h*c/α
E=6.626*10^-34*3*10^8E=

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At a temperature of 320K, the gas in a cylinder has a volume of 40.0 liters. If the volume of the gas is decreased to 20.0 liters, what must the temperature be for the gas pressure to remain constant?A. 160 K
B. 273 K
C. 560 K
D. 140 K

Answers

Assuming the gas behaves ideally,
PV/T = constant. P will also be constant in this giving us:
V₁/T₁ = V₂/T₂
40/320 = 20/T₂
T₂ = 160 K
The answer is A.

Answer:

The correct answer is option A.

Explanation:

Initial volume of the gas $V_1= 40.0L$

Initial temperature of gas $T_1= 320 K$

Final volume of the gas $V_2= 20.0L$

Final temperature of the gas = $T_2$

Applying Charles' Law:

$(V_1)/(T_1)=(V_2)/(T_2)$

$T_2=(V_2* T_1)/(V_1)=(20.0L* 320 K)/(40.0L)=160K$

The temperature of the gas when volume of the gas is 20.0 L is 160 K.Hence, the correct answer is option A.

What environmental factors affect kinetic energy and diffusion?

Answers

There are several environmental factors that affect the kinetic energy and diffusion. The environmental factors are temperature, molecular size, and pressure, nature of the material and the concentration of the material. All the mentioned factors directly impact the kinetic energy and diffusion of a material or compound or fluid. Temperature can generally increase the kinetic energy of molecules within a compound or a substance. Increase or decrease of temperature changes the shape and nature of the material concerned. So these natural factors have a big influence on the kinetic energy and diffusion.

Answers
Temparature
Humidity (Amount of molecules in the air)

Explanation
Examples of environmental factors are, temperature, wind, pressure, humidity etc. Kinetic energy is the energy possessed by a body in motion.
This motion can be affected by factors such as rain and humidity since the make the medium more dense. It require more energy to move in a denser medium.
Diffusion is the movement of molecules from a region of high concentration to a region of low concentration. When temperatures are high the molecules get more energy and move more faster increasing the rate of diffusion.

I live in the city. It's always warmer in the city, compared to other areas, even at night. Why is that? The rain shadow effect makes surrounding areas cool and moist and the city warm and dry. Buildings absorb and retain heat from the Sun, producing the urban heat island effect. Lake effect snow only affects areas outside of the city. The city receives lake effect snow.

Answers

I live in the city. It's always warmer in the city, compared to other areas, even at night. Why is that?

A.) The rain shadow effect makes surrounding areas cool and moist and the city warm and dry.

B.) Buildings absorb and retain heat from the Sun, producing the urban heat island effect.

C.) Lake effect snow only affects areas outside of the city.

D.) The city receives lake effect snow.

When discussing discordant and harmonious sound waves, which statement is false? A. Both types of waves are the result of component waves with different frequencies. B. Knowing the frequencies of the original waves is useful in determining if the result will be discordant or harmonious. C. Low ratios of the frequencies of the original and resultant waves indicate discordant waves. D. If the original waves combine to form irregular displacements of air, the sound will be discordant.

Answers

Correct answer choice is :

C) Low ratios of the frequencies of the original and resultant waves indicate discordant waves.

Explanation:

The sound is created when something vibrates. The vibrating body makes the means around it to vibrate. Vibrations in the air are described going longitudinal waves, which we can hear. Sound waves consist of regions of high and low pressure named compressions and rarefactions. The left ventricle will ultimately lose as depolarization opens from the right ventricle, but the stay in conduction effects in a wide QRS system. In the appearance of LBBB, the T wave should be discordant or diverted opposite the final deflection of the QRS system.

What is the French word for shepherds crook

Answers

The answer would be:

Houlette de berger.

"shepherd's crook" means "houlette de berger" in french

Two boxes of masses m and 3m are stacked. The surface between the more massive box and the horizontal surface is smooth and the surface between the boxes is rough. If the less massive box does not slide on the more massive box, what is the static friction force on the less massive box?

Answers

Answer:

The friction coefficient is $(F)/(4mg)$ .

Explanation:

Given that,

Mass of first box = m

Mass of second box = 3m

Let the static friction force on the less massive box is $F_(1)$ .

Since the small box is not slide, they have the same acceleration.

We need to calculate the acceleration

Using balance equation

$F-F_(1)=3ma$ ....(I)

$F_(1)=ma$ ....(II)

Adding both the equation

$F=4 ma$

$a=(F)/(4m)$

Put the value of a in equation (II)

$F_(1)=m*(F)/(4m)$

$F_(1)=(F)/(4)$

We need to calculate the friction coefficient

Using formula of frictional force

$F=\mu mg$

$\mu=(F)/(4mg)$

Hence, The friction coefficient is $(F)/(4mg)$ .

If the less massive box does not slide on the more massive box, the static friction force on the less massive box is (D) F/4.
F = ma
F=(3m+m)a
a = F/4m

Here are the following choices:
A) F
B) F/2
C) F/3
D) F/4

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An upward force is applied to a 6.0–kilogram box. this force displaces the box upward by 10.00 meters. what is the work done by the force on the box?