Which of the following best describes refraction?

Answers

Answer 1
I can’t see what the following is and you didn’t give enough context.
Answer 2

Answer:

The medium sound waves

Explanation:

change in the direction of a wave passing from one medium to another.


Related Questions

41. What effects the efficiency of a pulley?

a. the type of rope or cable

b. the way the wheel turns

c. the length of the rope

d. how big the wheel is

e. only a and be

f. all of the above

Answers

Answer:

e. only a and b

These the flow of electrons (the current) and where some of the electrons' energy gets converted into heat. (Lessons 5.01-5.03) electric currents Insulators Resistors Conductors​

Answers

Answer: The answer is resistors

Explanation: I just took the unit test and it was correct

A phase diagram assumes______
is kept constant.
Odensity
O volume
O temperature
O pressure

Answers

Choice D, pressure.
Pressure is the correct answer which is D

HELP ASAP TIMER

Three trains are all are moving along a track with the same speed and slam on their brakes. If all three trains have identical coefficients of kinetic friction with the rail surface, which train travels the longest distance to come to a stop?

a
This cannot be determined, without knowing the normal force on the train by the rail.
b
The most massive train.
c
They all travel the same distance in stopping.
d
The least massive train.

Answers

Answer:

the more massive train i think

Explanation:

more mass means kinda more energy so it will take it longer to slow since it is   larger

When a person strikes and lights a match, potential energy in the match is transformed into which types of energy?

electrical and thermal
thermal and radiant
radiant and nuclear
nuclear and kinetic
hurry brainliest ill give 49 points

Answers

Answer:

Radiant and thermal

Explanation:

Electrical and thermal don't make sense because you are not using electricity to light the match. Radiant and nuclear is not right because you are not using nuclear energy to light the match. Nuclear and kinetic isn't right because you are using kinetic and you are not using nuclear energy.

Answer:

answer is B. thermal and radiant

Explanation:

just got it right on edge

Plz di all plz i will give brainest and thanks to best answer do it right

Answers

Answer:

B

hdhdududydysgd

hdhdgdtdtdt

gsgdgdggd

Explanation:

I TIHNK IS THE ANSWER

Answer:

C

Explanation:

Wave length is - - - - >

Bsjejwakknsbsbehebebbdbdbs

Keith has been using a software application for a year on his home computer. A new version of the application was recently released. Keith’s license has a term of two years and entitles Keith to upgrade his application to a new version within the term. What type of license does the application have?

Answers

Answer:

d license with maintenance .

Explanation:

just took this test. :)

Particles in which state of matter are the most likely to interact with each other to cause a chemical reaction?

Answers

i think when particles are in the gas form they are most likely to cause a chemical reaction considering the fact that gas particles aren't very controllable and it would make sense that they would react unexpectedly

why are incandescent lights fo inefficient?​

Answers

Answer:

Explanation:

Incandescent bulbs are extremely inefficient because 90% of the energy is wasted as heat, with only 10% being converted to visible light. This gives incandescent bulbs a luminous efficiency rating of around 2%. Ultimately, incandescent bulbs perform better as heaters than as light sources.

Who might be suffering from dissociative fugue?

Answers

Answer:

More common in adults.

Explanation:

What do we know about the relative strength of the electric field around each object?

Answers

Answer:

A charged object in an electric field experiences a force due to the field. The electric field strength, E, at a point in the field is defined as the force per unit charge on a positive test charge placed at that point.

Explanation:

Find the displacement of the object moving at v= -2 m/s for t=5s

Answers

Answer:

d = - 10 [m]

Explanation:

We must remember that speed is defined as the relationship between the displacement in a given time. In this way, we can propose the following equation.

[tex]v = d/t[/tex]

where:

v = velocity = 2 [m/s]

d = displacement [m]

t = time = 5 [s]

Now replacing:

[tex]d=-5*2\\d=-10[m][/tex]

What is the density of an object with a mass of 20 grams and a volume of 5 cm?

Answers

Answer:

4

Explanation:

Divide mass(m) by volume(v), you get density(D)

m/v=D

20/5=4

Identify the type of motion that occurs when a body moves around its own center of mass.

circular
revolution
rotation
resolution

Answers

Answer:

circular

Explanation:

a car travels 200km in 3.0 hours. Determine the average velocity of the car

Answers

Answer:

66.67 km/hr

Explanation:

The average velocity of the car can be found by using the formula

[tex]a = \frac{d}{t } \\ [/tex]

d is the distance

t is the time taken

From the question we have

[tex]a = \frac{200}{3} \\ = 66.66666...[/tex]

We have the final answer as

66.67 km/hr

Hope this helps you

A 20 kg mass is hanging on one side of a pulley and a 5 kg mass is hanging on the other. Determine the acceleration of each mass.

Answers

Answer:

i believe it's 7

Explanation:

hand pushes on table with force of 35 N forward. whats the reaction force

Answers

Answer:

i think it is newtons third law of motion but i'm not sure sorry.i just really need point i don't know the answer.

Explanation:

Question 1 of 25
A bookcase has a mass of 37 kg. What is the weight of the bookcase?

Help please

Answers

answers

81.6 pounds rounded or just 81.571 if it needs to be exact

66.13 pounds rounded

Any one their to help


A popular ride at an amusment park lifts
customers up to a height of 50 m and then
drops them threw a displacement of 50 m
before slowing them to a stop. How fast
are the customers going at the 50 m
mark?

Answers

Answer:

five dollars

Explanation:

im thick lol

Sonya pushes his friend down the road on his new wagon. Which two terms accurately describe the net force acting on the sled?
Group of answer choices

balanced and contact

unbalanced and noncontact

balanced and noncontact force

unbalanced and contact

Answers

Answer:

unbalanced and contact

Explanation:

The two terms that bests describes the net force acting on the sled is an unbalanced and contact force.

Force is a pull or push on a body. We have two main types of forces. Contact forces acts on a body and they must be in touch with it. An example is frictional force.

Non - contact forces acts based on force field and they are not in contact with the body. An example is gravitational force.

Since the sled is sliding down the road, it is changing velocity and so, unbalanced forces are acting on it.

Therefore, the force on the wagon is an unbalanced and contact force.

Please select the word from the list that best fits the definition
Wave that has vibration in a direction that is perpendicular to the motion creating it
transverse wave
longitudinal wave
mechanical wave

Answers

Answer:

Transverse wave

Explanation:

A supply plane drops a package to the ground for stranded campers below. After falling for 8.14 seconds, the package will have a downward velocity of 80.79 m/s. How high was the plane when it dropped the package?

Answers

Answer:

333 m

Explanation:

The following data were obtained from the question:

Initial velocity (u) = 0 m/s.

Time (t) = 8.14 s.

Final velocity (v) = 80.79 m/s.

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) =?

v² = u² + 2gh

80.79² = 0 + (2 × 9.8 × h)

6527.0241 = 0 + 19.6h

6527.0241 = 19.6h

Divide both side by 19.6

h = 6527.0241 / 19.6

h = 333 m

Thus, the plane was at a height of 333 m when the package was dropped.

1. Four identical elephants are at different heights. If your physics teacher
asked you which of the following elephants has the greatest amount of
potential energy, what will be your answer? And why?

Helpppp:(((((​

Answers

Elephant D does because it is at the highest height and can exert a greater amount of force leading to a greater amount of energy

In interactions of action-reaction pairs involving Earth and everyday objects, the effect on Earth's motion is often negligible because

Answers

Answer:

...The earth has a great mass. Since mass and inertia are directly proportional to each other, the larger the mass of the object, the more inertia that it has. Inertia is the objects resistance to a change in motion.

Explanation:

A fireboat is to fight fires at coastal areas by drawing seawater with a density of 1030 kg/m3 through a 10-cm-diameter pipe at a rate of 0.04 m3/s and discharging it through a hose nozzle with an exit diameter of 5 cm. The total irreversible head loss of the system is 3 m, and the position of the nozzle is 3 m above sea level. For a pump efficiency of 70 percent, determine the required shaft power input to the pump and the water discharge velocity.

Answers

Answer:

50.93 m/s

199.5 kW

Explanation:

From the question, the nozzle exit diameter = 5 cm, Radius= diameter/2= 5cm/2= 2.5cm. we can convert it to metre for unit consistency= (2.5×0.01)=

0.025m

We can calculate the The cross sectional area of the nozzle as

A= πr^2

A= π ×0.025^2

= 1.9635 ×10^- ³ m²

From the question, the water is moving through the pipe at a rate of 0.1 m /s , then for the water to move through it at a seconds, it must move at

(0.1 / 1.9635 ×10^- ³ m²)

= 50.93 m/s

During the Operation of the pump, the Dynamic energy of the water= potential energy provided there is no loss during the Operation

mgh = 1/2mv²

We can make "h" subject of the formula, which is the height of required head of water

h = (1/2mv²)/mg

h= v² / 2g

h = 50.93² / (2 ×9.81)

h = 132.21m

From the question;

The total irreversible head loss of the system = 3 m,

the given position of nozzle = 3 m

the total head the pump needed=(The total irreversible head loss of the system + the position of the nozzle + required head of water )

=(3 + 3 + 132.21m)

=138.21m

mass of water pumped in a seconds can be calculated since we know that mass is a product of volume and density

Volume= 0.1m³

Density of sea water=1030 kg/m

(0.1 m^3× 1030)

= 103kg

We can calculate the Potential enegry, which is = mgh

= (103 ×9.81 × 138.21)

= 139651.5 Watts

= 139.65kW

To determine required shaft power input to the pump and the water discharge velocity

Energy= efficiency × power

But we are given efficiency of 70 percent, then

139651.5 Watts = 0.7P

=199502.18 Watts

P=199.5 kW

Therefore, the required shaft power input to the pump and the water discharge velocity is 199.5 kW

Why doesn’t the force you exert when sitting on a chair cause the chair to move?

a. The floor exerts a balancing force on the chair.
b. The floor exerts too much force on the chair
c. The floor exerts an unbalancing force on the chair.
d. The floor exerts no force on the chair.

Answers

Answer:

the answer is A

Explanation:

What two things does force depend on​

Answers

Answer:

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance or (acceleration)

Explanation:

a 50.0kg skydiver experience a 740newton air resistance force determine her acceleration please help asap​

Answers

Answer:

a = - 5 [m/s²].

Explanation:

To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

F = resultant force [N] (units of Newtons)

m = mass = 50 [kg]

a = acceleration = 9.81 [m/s²]

For this particular problem, the only forces acting are the force of gravity acting down with negative sign, while the force of air opposes the fall, in this way it is positive.

[tex]f_{air}-F_{grav}=-m*a[/tex]

As the movement is pointing down the acceleration will be taken as negative.

[tex]740-(50*9.81)=-50*a\\740-490.5 = -50*a\\249.5 = -50*a\\a = - 5 [m/s^{2} ][/tex]

We should note that in this case, the acceleration has a negative sign, this means that the force of the air makes the skydiver move upwards

12. How many grams of beryllium are needed to produce 36.0 g of hydrogen? (Assume an excess of water.)
Be(s) + 2H, O() → Be(OH)2 (aq) +H,(g)
a
4.00 g
b. 36.0 g
c. 162 g
d 324 g

Answers

Answer:

Answer is: 162 g of beryllium.

Chemical reaction: Be + 2H₂O → Be(OH)₂ + H₂.

m(H₂) = 36,0 g.

m(Be) = ?

n(H₂) = m(H₂) ÷ M(H₂)

n(H₂) = 36,0 g ÷ 2 g/mol = 18 mol.

from reaction: n(Be) : n(H₂) = 1 : 1.

n(Be) = n(H₂) = 18 mol.

m(Be) = n(Be) · M(Be).

n(Be) = 18 mol · 9 g/mol = 162 g.

Answer:

Answer is: 162 g of beryllium.

Chemical reaction: Be + 2H₂O → Be(OH)₂ + H₂.

m(H₂) = 36,0 g.

m(Be) = ?

n(H₂) = m(H₂) ÷ M(H₂)

n(H₂) = 36,0 g ÷ 2 g/mol = 18 mol.

from reaction: n(Be) : n(H₂) = 1 : 1.

n(Be) = n(H₂) = 18 mol.

m(Be) = n(Be) · M(Be).

n(Be) = 18 mol · 9 g/mol = 162 g.

D. Ampere
A screw of length 5 cm enters totally into a wooden block after 25 turns. What is the pitch of the
screw?
A. 0.1 cm
B. 0.2 cm
C. 0.4 cm
D. 0.5 cm

Answers

Features of the mobilization monkey

Answer:

0.5

Explanation:

u must simplyfiy

Other Questions
Dasher wrapped 16 of the 54 presents for Christmas.Please represent how many presents his contribution was as a fraction and as a percent. ( PLEASE ANSWER FOR 100 POINTS AND, BRAINLIEST ) (If you just put random letters just to get points, I'll delete your comment and report you.) (Please ANSWER!) 1.) Decide whether circumference or area would be needed to calculate it. Explain why!!! You do not need to solve it just state if it is circumference or area and why! The total number of equally-sized tiles on a circular floor.2.) Decide whether circumference or area would be needed to calculate it. Explain why!!! You do not need to solve it just state if it is circumference or area and why! The amount of oil it takes to cover the bottom of a frying pan.3.) Decide whether circumference or area would be needed to calculate it. Explain why!!! You do not need to solve it just state if it is circumference or area and why! The distance your car will go with one turn of the wheel. how much tax would you pay on a new tv that is 899 at bed buy if the tax rate is 6.5 PLEASE look at the photo of my computer to see the problem X+8=13 Thats my question please simplify53823 What are the factors of -24 that have a sum of 5? How did cotton and sugar plantation owners feel about secession? Both cotton and sugar plantation owners wanted secession. Neither cotton nor sugar plantation owners wanted secession.Cotton plantation owners opposed secession, while sugar plantation owners supported secession.Cotton plantation owners supported secession, while sugar plantation owners opposed secession. Read this excerpt from The Medicine Bag. He carefully prepared for his quest with a purifying sweat bath, and then he went alone to a high butte top to fast and pray. After three days he received his sacred dreamin which he found, after long searching, the white mans iron. He did not understand his vision of finding something belonging to the white people, for in that time they were the enemy. When he came down from the butte to cleanse himself at the stream below, he found the remains of a campfire and the broken shell of an iron kettle. This was a sign that reinforced his dream. He took a piece of the iron for his medicine bag, which he had made of elk skin years before, to prepare for his quest. He returned to his village, where he told his dream to the wise old men of the tribe. They gave him the name Iron Shell, but neither did they understand the meaning of the dream. The first Iron Shell kept the piece of iron with him at all times and believed it gave him protection from the evils of those unhappy days. Then a terrible thing happened to Iron Shell. He and several other young men were taken from their homes by the soldiers and sent far away to a white mans boarding school. He was angry and lonesome for his parents and the young girl he had wed before he was taken away. At first Iron Shell resisted the teachers attempts to change him, and he did not try to learn. One day it was his turn to work in the schools blacksmith shop. As he walked into the place, he knew that his medicine had brought him there to learn and work with the white mans iron. Iron Shell became a blacksmith and worked at the trade when he returned to the reservation. All of his life he treasured the medicine bag. What is symbolic about the piece of the iron that Iron Shell keeps in his medicine bag? It represents a mixing of two cultures. It explains how Iron Shell became a blacksmith. It represents a young man giving up on his traditions. It explains the history of the reservation How do Abigail's responses characterize her? Another car dealership sells a truck for the wholesale price of $12,000. During a special sales event, the dealership offers a 10% discount off of the price. After the discount, how much will a customer pay for this vehicle? Show your work. Select the correct answer from each drop-down menu.4321-6531234 5 6--23455The point that is the reflection of Dacross the x-axis and the yaxis is point v. and the coordinates of this point arereflection of point Lacross x-axis is point v. and the coordinates of this point are. TheDesetmentum. All rights reserved A line passes through the point (4,5) and has a slope of -5/4 Write an equation in slope-intercept form for this line Creating a positive image is partly about appearance. Give an example of some aspect of appearance that would make a good impression at a job interview. Give another example of something in a person's appearance that would make a negative impression at a job interview. For a specific location in a particularly rainy city, the time a new thunderstorm begins to produce rain (first drop time) is uniformly distributed throughout the day and independent of this first drop time for the surrounding days. Given that it will rain during some period on both of the next two days, what is the probability that the first drop of rain will be felt between 9:15 AM and 2:50 PM on both days what is la nina means What do polar orbiting satellites use to collect data?-Sun waves-Micro waves-Sun rays-Tidal waves Anyone got an answer also it doesn't gimme the option of making this 5pts :( para ____ necesito una bolsa de basura A. lavar los platosB. limpiar el polvoC. sacar la basura D. lavar la ropa E. dar de comer al perro Can someone help please help me make a short story in Spanish with the following words, Camino hacia,corrio, vio, dijo, abrito, cerro,escucho, animal es, puerta, eran las de la maana Please its a major grade and would he highly appreciated:))