(a) What is the greatest wavelength of light that can be absorbed by the material?

(b) In what region of the electromagnetic spectrum is this wavelength located?

Answer:

**Answer:**

a)

b) infrared region

**Explanation:**

**Photon energy** is the "energy carried by a single photon. This amount of energy is directly proportional to the photon's electromagnetic frequency and is inversely proportional to the wavelength. If we have higher the photon's frequency then we have higher its energy. Equivalently, with longer the photon's wavelength, we have lower energy".

**Part a**

Is provide that the smallest amount of energy that is needed to dissociate a molecule of a material on this case 0.42eV. We know that the energy of the photon is equal to:

Where h is the Planck's Constant. By the other hand the know that and if we solve for f we have:

If we replace the last equation into the E formula we got:

And if we solve for we got:

Using the value of the constant we have this:

**Part b**

If we see the figure attached, with the red arrow, the value for the wavelenght obtained from part a) is on the **infrared region, **since is in the order of

What happens at night- describing air circulation

Garza travels at a speed of 5 m/s. How long will it take him to travel 640 m?

A 4 kg bowling ball accelerates 1 m/s2. what is the net force on the ball?

Is it true or false if a force is a push or a pull on a object

A large convex lens stands on the floor. The lens is 180 cm tall, so the principal axis is 90 cm above the floor. A student holds a flashlight 120 cm off the ground, shining straight ahead (parallel to the floor) and passing through the lens. The light is bent and intersects the principal axis 60 cm behind the lens. Then the student moves the flashlight 30 cm higher (now 150 cm off the ground), also shining straight ahead through the lens. How far away from the lens will the light intersect the principal axis now?A. 30 cmB. 60 cmC. 75 cmD. 90 cm

Garza travels at a speed of 5 m/s. How long will it take him to travel 640 m?

A 4 kg bowling ball accelerates 1 m/s2. what is the net force on the ball?

Is it true or false if a force is a push or a pull on a object

A large convex lens stands on the floor. The lens is 180 cm tall, so the principal axis is 90 cm above the floor. A student holds a flashlight 120 cm off the ground, shining straight ahead (parallel to the floor) and passing through the lens. The light is bent and intersects the principal axis 60 cm behind the lens. Then the student moves the flashlight 30 cm higher (now 150 cm off the ground), also shining straight ahead through the lens. How far away from the lens will the light intersect the principal axis now?A. 30 cmB. 60 cmC. 75 cmD. 90 cm

**Answer with Explanation:**

We are given that

Mass , m=372 g=

**1 kg=1000g**

Maximum acceleration, a=

Maximum speed ,v=1.75 m/s

a.We know that

**Maximum acceleration, a=**

**Maximum speed, v=**

**Angular frequency,**

b.Substitute the value of angular frequency

**Hence, the amplitude=0.17 m**

c.**Spring constant,k=**

Using the formula

**Hence, the spring constant,k=37.6 N/m**

B) It takes millions of years to replace.

C) Trees grow everywhere, so we always have some.

D) It can be replaced in a reasonable amount of time.

**Answer:**

D) It can be replaced in a reasonable amount of time.

**Explanation:**

i took the test!!!!!1

**Explanatio**

**omega=2pi/T**

**Answer:**

0

0000

**Explanation:**

The two processes that allow water to enter the **atmosphere** are: **Evaporation** and Transpiration.

1. **Evaporation:** Evaporation is the process by which liquid water on the Earth's surface (such as **oceans**, lakes, rivers, and even moist soil) is heated by the sun and turns into water vapor. This water vapor then rises into the atmosphere. Evaporation is a key component of the **water cycle, **where water constantly moves between the surface of the Earth and the atmosphere.

2. ****Transpiration**:** Transpiration is the process by which water is released into the atmosphere from plants. Plants take up water from the soil through their roots, and this water **travels **through the plant and eventually evaporates from small openings called stomata on the leaves. Transpiration serves various functions in plants, including cooling the plant and transporting nutrients.

Together, evaporation and transpiration contribute to the overall movement of water from the **Earth's surface **into the atmosphere, where it eventually condenses to form clouds and participates in various atmospheric processes before returning to the surface as precipitation through processes like rain, snow, sleet, or hail.

To know more about **atmosphere:**

#SPJ6

**Answer:**

sublimation and transpiration

**Explanation:**

The water can enter the atmosphere from snow and ice with the process of sublimation where they also make water vapors. Last water can get in the atmosphere from plants through transpiration which means that the water is evaporated through the pores of the leaves

**Answer:**

**Explanation:**

Mass of the gate,

Mass of the raven,

Initial speed of raven,

Final speed of raven,

Moment of Inertia of the gate about the axis passing through one end:

Angular momentum of the gate,

Using the law of conservation of angular momentum:

What is the normal force exerted by the surface on the bottom block? (Use the following as necessary: m and g as necessary.)

(a) The **normal force **exerted by the **surface **on the** bottom block** is** N1 = 2mg. **

Given that,

- A block
**m1**rests on a**surface**. - A s
**econd block m2**sits on top of the first block. - A
**horizontal force F**applied to the**bottom block**pulls both blocks at**constant velocity.**Here m1 = m2 = m.

Based on the above information, we can say that the N1 is 2mg.

Learn more: brainly.com/question/17429689

**Answer:**

**N = 2mg**

**Explanation:**

Assuming the surface is horizontal

The surface must provide enough normal force to prevent the masses from accelerating in the vertical direction.