When we shake a mango tree, the mangoes fall down. It is because when we shake the tree, the mango tend to be rest due to inertia where as the branches are in motion. That is why the mangoes tend to be at rest due to inertia where as the branches are in the motion.

Drag the tiles to the correct boxes. Not all tiles will be used.

Match the molecular shapes to the correct Lewis structures.

trigonal pyramidal

trigonal planar

bent

tetrahedral

linear

Answer

1) AlH3= trigonal planar

2) CH2F2= tetrahedral

3) PH3= trigonal pyramidal

4) O3= bent

**Explanation:**

**I took the test**

If 84 J of work are exerted to pull a wagon, how much force does it take to pull the wagon 7.0 m? Round your answer to the nearest whole number.

**Answer: It takes 12 N of force to pull the wagon.**

**Explanation:**

Which element has 1 valence electron in its outer shell and will react with a

group 17 element in a 1:1 ratio?

A. Strontium

B. Silicon

C. Lithium

D. Sulfur

**Answer: C. Lithium**

**Explanation: Quizzed**

**C. Lithium **has 1 valence electron in its outer shell and so will react with a group 17 element in a 1:1 ratio.

The **last number** of **group** that an element belongs to on the** periodic table **tells the **number of valence electrons** that it will have.

Group 17 elements have seven valence electrons and so need one more to achieve stability which is why they will react with Lithium (which has that one electron) in a 1:1 ratio.

Some of those elements include:

Fluorine ChlorineBromineIodineIn conclusion therefore, Lithium has 1 valence electron and will react with group 17 elements in a 1:1 ratio.

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13. For an object to appear transparent, what interaction must occur between light waves and the object they hit?

A. They are refracted.

C. They are diffracted

B. They are absorbed.

D. They are transmitted

**Answer:**

The answer is B

**Explanation:**

The absorption happens when photons from light hit atoms and molecules, and they vibrate because of that specific interaction. Then the heat ejects from the object in the format of thermal energy.

For an object to appear transparent, **light waves **must be transmitted through the **object**. Option D is correct.

**Light waves **are a type of **electromagnetic radiation **that can be perceived by the human eye.

Here,

For an object to appear transparent, **light waves **must be transmitted through the object. Therefore, the correct answer is D. When light waves are transmitted, they pass through the object without being absorbed or reflected, allowing us to see through the object. The degree to which light is transmitted through an object is related to the object's optical properties, such as its **refractive index**, which determines how much the light is bent as it passes through the object.

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A 12 ohm resistor and a 24 ohm resistor are connected in parallel across a 6.0 V battery. The correct statement from the following is a. the current is the same in each resistor. b. the power dissipated is the same in each resistor. c. the larger current is in the larger resistor. d. the voltage difference between the ends of each resistor is the same.

**Answer:**

d. the voltage difference between the ends of each resistor is the same.

**Explanation:**

A resistor is a circuit component that offers opposition to the flow of current. Resistors may be connected in series or in parallel.

Resistors in parallel are connected at common junctions. The potential difference (voltage difference between the ends of each resistor) is the same for each resistor in a parallel connection while the current across each resistor is different.

a boy takes 20 minutes to cover 3.2 km on a bicycle find the speed in km/hr

**Answer:**

9.6 km/h

**Explanation:**

20 minutes=1/3 minute.

The speed of the bicycle: 3.2:1/3=9.6 km/h.

Answer: 9.6 km/h

A spacecraft is moving past the earth at a constant speed of 0.60 times the speed of light. The astronaut measures the time interval between ticks of the spacecraft clock to be 3.2 s. What is the time interval (in seconds) that an earth observer measures

**Answer:**

the time interval that an earth observer measures is **4** seconds

**Explanation:**

Given the data in the question;

speed of the spacecraft as it moves past the is 0.6 times the speed of light

we know that speed of light c = 3 × 10⁸ m/s

so speed of spacecraft v = 0.6 × c = 0.6c

time interval between ticks of the spacecraft clock Δt₀ = 3.2 seconds

Now, from time dilation;

t = Δt₀ / √( 1 - ( v² / c² ) )

t = Δt₀ / √( 1 - ( v/c )² )

we substitute

t = 3.2 / √( 1 - ( 0.6c / c )² )

t = 3.2 / √( 1 - ( 0.6 )² )

t = 3.2 / √( 1 - 0.36 )

t = 3.2 / √0.64

t = 3.2 / 0.8

t = **4** seconds

Therefore, the time interval that an earth observer measures is **4** seconds

What are

the main differences between cell

walls and cell membranes?

Answer:

Cell membrane helps to enclose the cell organelles and cytosol inside a cell. A cell wall is a ridgid, protective layer and it covers the cell membrane

Explanation:

a car traveling in a highway brakes to a stop without skidding. what happens to its kinetic energy? can that energy be recovered and reused?

**Answer:**

A car traveling on a highway takes to stop without skidding. What happens to its kinetic energy? ... The energy goes to parts of the brakes. No, the energy can only be reused if there is a heat pump present

Two concentric, circular wire loops of radii r1 and r2 (r1 < r2) are located in the x-y plane; each carries a current I in a clockwise direction. (a) Find the net dipole moment of this system. (b) Repeat for the reversed current in the inner loop

**Answer:**

a. πi(r₁² + r₂²)

b. πi(r₂²- r₁²)

**Explanation:**

**(a) Find the net dipole moment of this system.**

The magnetic dipole moment, μ = iA where i = current and A = For area

For the circular loop with radius r₁, and current i₁ in a clockwise direction, i₁ = + i positive

μ₁ = i₁A₁

= +i(πr₁²)

= πir₁²

For the circular loop with radius r₂, and current i₂ in a clockwise direction, i₂ = +i

μ₂ = i₂A₂

= +i(πr₂²)

= πir₂²

The net dipole moment, μ = μ₁ + μ₂

μ = μ₁ + μ₂

= πir₁² + πir₂²

= πi(r₁² + r₂²)

**(b) Repeat for the reversed current in the inner loop**

With the reversed current in the inner loop, the current is negative. So i₂ =-i

μ₁ = i₂A₁ = -i(πr₁²) = -πir₁²

So,

μ = μ₁ + μ₂

= -πir₁² + πir₂²

= πi(-r₁² + r₂²)

= πi(r₂²- r₁²)

What are the parts of a torch light name them

**Answer: Batteries,the case of the torch,reflector,contacts,switch and lens and the light/bulb Hope i helped :)**

Bent over row trains what specific muscle?

O A. triceps

O B. trapezius

O C. latissimus dorsi

D. pectoralis major

I believe it is A for the answer

Please help

Which of the following is an example of heat energy being transformed into mechanical energy

A. An electric mixer being used to beat eggs

B. A person turning a crank to sharpen a pencil.

C. A car battery being used to power a car radio

D. Boiling water producing steam used to power a boat

**Answer:**

D

**Explanation:**

because it is the only one that has something to do with heat keyword would be boiling

Complete the sentence below using the words provided in parentheses (). For two universes that are the same size, the universe with the faster expansion rate must be _______ (younger/older) than the universe with the slower expansion rate. The slope of the line in the Hubble plot of the ______ (younger/older) universe will be ______ (steeper/flatter)

**Answer:**

For two universe that is the same size, the universe with the faster expansion rate must be **younger** than the universe with a slower expansion rate. The slope in the line of the Hubble plot of the **older**** **universe will be** ****flatter**.

**Explanation:**

Hubble's law establishes a direct relationship between a galaxy's distance and its redshift-determined recessional velocity. The redshifts of galaxy clusters and distant galaxies are equivalent and proportional to their distances from us, according to Hubble's theorem.

Thus, to copy and complete the given question.

For two universe that is the same size, the universe with the faster expansion rate must be **younger** than the universe with a slower expansion rate. The slope in the line of the Hubble plot of the **older**** **universe will be** ****flatter**.

_PCi5 + _H20 + _H3PO4 _HCI

A.) 1,3,1,5

B.) 2,4,1,5

C.) 1,4,1,5

D.) 2,1,2,5

**Answer:**

C

**Explanation:**

because of the kids are doing well and staying in the middle of the day early to get a new phone number for home now deep

If a person wanted to engineer a new type of communication device, what field of study would be the most useful?

A ) electrical engineering

B ) chemical engineering

C ) optical engineering

D ) mechanical engineering

Answer: Option A: electrical engineering.

Explanation: The field of electrical engineering, sometimes called electronics engineering, mostly outside the US, is a field of engineering that covers a number of subtopics that include large scale power systems, electronics, control systems, signal processing and telecommunications. In this case the engineer would specifically have to know about electronics (computer chips), signal processing (cell signals) and telecommunications.

A uniform rod of length 50cm and mass 0.2kg is placed on a fulcrum at a distance of 40cm from the left end of the rod. At what distance from the left end of the rod should a 0.6kg mass be hung to balance the rod?

a.48 cm

b. 50 cm

c. 45 cm

d. the rod can not be balanced with this mass. e.42 cm

NO LINKS.

I’m pretty sure it’s b

A woman is driving her car due east at a velocity of 10 m/s. If the woman has a mass of 50 kg and her car has a mass of 1.000 kg, what is the magnitude of the momentum of the woman and her car?

Answer: 10,500 kg m/s

Explanation: (1,000 + 50)(10)

As wavelength decreases the frequency of a wave _______

**Question (Fill-In-the Blank):**

As wavelength decreases the frequency of a wave _______

**Answer:**

Increases

**Explanation:**

When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same.

[tex] \boxed{ \boxed{ \huge\mathrm{Answer࿐}}}[/tex]

[tex] \mathrm{wavelength \: \: \dfrac{1}{ \propto} \: \: frequency }[/tex]

So, As wavelength decreases the frequency of a wave **Increases.**

**_____________________________**

[tex]\mathrm{ \#TeeNForeveR}[/tex]

True or False - Water changing between states of matter is an example of a physical change.

true. true is the correct answer

If you lived on Saturn, which planets would exhibit retrograde motion like that observed for Mars from Earth? (Select all that apply.)

Mercury

Venus

Earth

Mars

Jupiter

Uranus

Neptune

**Answer:**

earth , mercury , and neptune

**Explanation:**

pls mark brainless

Mars , Jupiter , Neptune

A spring is hung from the ceiling. When a block is attached to its end, it stretches 2.6 cm before reaching its new equilibrium length. The block is then pulled down slightly and released. What is the frequency of oscillation?

**Answer:**

f = 3.09 Hz

**Explanation:**

This is a simple harmonic motion exercise where the angular velocity is

w² = [tex]\frac{k}{m}[/tex]

to find the constant (k) of the spring, we use Hooke's law with the initial data

F = - kx

where the force is the weight of the body that is hanging

F = W = m g

we substitute

m g = - k x

k = [tex]- \frac{m g}{x}[/tex]

we calculate

k = [tex]- \frac{9.8 m}{- 2.6 \ 10^{-2}}[/tex]

k = 3.769 10² m

we substitute in the first equation

w² = [tex]\frac{ 3.769 \ 10^2 \ m }{m}[/tex]

w = 19.415 rad / s

angular velocity and frequency are related

w = 2πf

f = [tex]\frac{w}{2\pi }[/tex]

f = 19.415 / 2pi

f = 3.09 Hz

if a car travels 200 m to the east in 8.0s what is the car's average velocity.

**Answer:**

25mph

**Explanation:**

you do distance divided by time. 200/8=25

Hello guys sana ok lng kau

sssssssssssss

**Explanation:**

**Answer:**

hello how are you

have a great day

A child has a mass of 35 kg. The child is running across a fiend and has a speed of 3 m/s. What is the kinetic energy of the child?

Answer:

Explanation:

Given the following data;

Mass = 35 kg

Velocity = 3 m/s

To find the kinetic energy of the child;

K.E = ½mv²

Polarizing windows, filters, etc. are often used to reduce the amount of light that enters the lens of a camera or into a room or a car. A library atrium has an overhead skylight that lets in too much light during the day which heats up the interior of the library far too much. The building engineer installs new double paned polarizing sky lights to reduce the intensity. If sunlight, which is unpolarized, has an average intensity of 1366 W/m2 what angle should the polarizing axis of the second pane of the window make with the polarizing axis of the first pane of the window in order to reduce the intensity of the sunlight to 33% of the original value

**Answer:**

θ = 35.7º

**Explanation:**

For this exercise we must use the law of Malus

I = I₀ cos² θ

where the angle is between the two polarizers.

When the unpolarized light from the sun reaches the first polarizer, only the light polarized in the direction manages to be transmitted, which is why

I₁ = I₀ /2

this light reaches the second polarizer

I₂ = I₁ cos² θ

I₂ = I₀/2 cos² θ

cos² θ = 2 I₂ / Io

indicate that the transmitted light is 33% = 0.33 I₀

cos² θ = 2 0.33

cos θ = √0.66

θ = cos⁻¹ 0.8124

θ = 35.7º

when a light beam emerges from water into air, the average light speed ____.

a. increases

b. decreases

c. remains the same

d. not provided

**Answer:**

Increases

**Explanation:**

The light is emerging from a denser medium to rarer medium so the average light speed increases.

When a **light **beam emerges from water into air, the **average **light speed **increases**.

The **bending **of a ray passes at an angle from one **medium **to another in which the speed will be **different**, as when light passes from air into water and also from water into air can be known as **refraction.**

When light travels from water to air, the angle from water to air the light gets **speeds **up and then its changes **direction**. The light turns away from the normal line. Because the light moves from a **denser **medium to the **rarer **medium. But from air to water the speed will be decreased because in that case the light travels from the rarer medium to the denser medium.

Hence, the **light **beam when passes, the average speed gets **increased**.

So, **Option A **is the correct answer.

Learn more about **refraction**,

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A theme park creates a new kind of water wave pool with large waves caused by constructive interference. There are two wave generators in phase with each other along either side of a pool that is 24.0 m wide. A swimmer that is 9.0 m from one generator and 14.0 m from the other notices that she is in a region with almost no wave amplitude, but there are large-amplitude waves on either side of her.

What is the longest wavelength that will produce this interference pattern?

Express your answer to three significant figures and include appropriate units.

**Answer:**

10.0 m

**Explanation:**

Since there is no amplitude at the point of the swimmer, we have destructive interference.

So, the path difference ΔL = L₂ - L₁ where L₁ = swimmer's shorter distance from one generator = 9.0 m and L₂ = swimmer's longer distance from the other generator = 14.0 m. ΔL = 14.0 m - 9.0 m = 5.0 m

Also, since we have destructive interference, ΔL = (n + 1/2)λ where n = number of wavelengths and λ = wavelength of waves

For maximum wavelength, n = 0

So, ΔL = (n + 1/2)λ

ΔL = (0 + 1/2)λ

ΔL = λ/2

λ/2 = ΔL

λ = 2ΔL

λ = 2 × 5.0 m

λ = 10.0 m

So, the longest wavelength that will produce this interference pattern is λ = 10.0 m

Which organisms were first responsible for depleting carbon dioxide from the atmosphere, replacing it with oxygen?

A) Plants

B) Dinosaurs

C) Cyanobacteria

D) Trilobites

C) Cyanobacteria is the answer

A) Plants

Hopes this helps

Hopes this helps

Place the balloon in a bell jar. If available also add some shaving cream and fresh marshmallows. Ask the instructor for help if you are unfamiliar with this apparatus. The motor of the vacuum pump will remove air from the bell jar when it is turned on. Make a prediction about what you think will happen to the balloon as air is removed from the bell jar.

**Answer:**

The balloon will collapse

**Explanation:**

When air is removed from the bell jar, the balloon will collapse if the internal pressure from the balloon does not balance the atmospheric pressure from the surroundings.

Scott was a member of the seven-person board of directors of Buffalo Corporation. Officers of that corporation were considering a large purchase of new equipment to begin production of a completely new product line. The board of directors had not been consulted about the new venture, but Scott found out about the plan and objected to it being implemented. He sought to inspect the corporate books and records to gain factual information supportive of his position. The officers refused his inspection request, asserting that Scott had no management function or power. Under these circumstances, Scott: _________a. has the right to inspect corporate books only if he is also a majority shareholder.b. is barred from examination of the books and records of the corporation under the doctrine of respondeat superior.c. has the right to inspect corporate books and records, as information regarding the corporation and its affairs is essential to perform his duties.d. is barred from examination of the books and records of the corporation under the business judgment rule.
no wonder why u lookin all aids
An astronauts suit provides for the basic needs of the astronaut. Which of the following is NOT an accommodation provided by the astronaut's suit?The answer choices are in the picture
Which angles are adjacent angles?
(10ab-15ab+5ab)(-5ab)
Briefly describe the Gonzalez family's situation.
IVEvaluate the following:a) A tea manufacturing company produces normal and green tea bags only. If 52.8% of 36850 totalproduction is normal tea bags, how many green tea bags are there?b) If 61.6% of students out of 9855 total students are based in England, how many students arebased in England?
Find value of xA. 15B. 18C. 16D. 19
if 300.0g of chlorine is reacted how much calcium hydroxide is needed to react with it
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A circular plate has circumference of 26.4 inches. What is the area of this plate? Use 3.14 for pi.
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HELP ME PLEASE I AM STRUGGLING
A student uses visible spectrophotometry to determine the concentration of CoCl2(aq) in a sample solution. First the student prepares a set of CoCl2(aq) solutions of known concentration. Then the student uses a spectrophotometer to determine the absorbance of each of the standard solutions at a wavelength of 510nm and constructs a standard curve. Finally, the student determines the absorbance of the sample of unknown concentration. The original solution used to make the solutions for the standard curve was prepared by dissolving 2.60g of CoCl2 (molar mass 130.g/mol) in enough water to make 100.mL of solution. What is the molar concentration of the solution
The Tennis Club decided to buy T-shirts for its members. Action Sports Apparel quoted the following prices for the T-shirtsNumber of T-Shirts Total Cost (dollar)121561721122266Which equation best describes the relationship between the total cost, c(t), and the number of T-shirts, t?ok
What economic impact did immigration have in Texas?A) Supplied cheap labor for construction, restaurant, hotel, and other industriesB) Supplied expensive labor for teaching, construction, cooking, and other industriesC) Removed cheap labor for construction, restaurant, hotel, and other industriesD) Removed cheap labor for cooking, driving, automobile, and other industries