Which of the following are
mechanical waves?
A. waves that travel in empty space
B. sound and ocean waves
C. light waves
D. x-rays

Answers

Answer 1
It’s b for sure since the waves move on the ocean
Answer 2

Answer:

sound waves are mechanical waves

Explanation:

Mechanical waves needs a media through which they can transmit, and media must have elasticity


Related Questions

Plss help with my science

Answers

Answer:

rotates, axis,not sure,day, not sure, night, revolves, not sure, hemisphere, towards, summer, away, winter

Explanation:

is a solenoid a magnet or no ??​

Answers

Answer the term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it. Solenoids are important because they can create controlled magnetic fields and can be used as electromagnets

I hope it is helpful

Tafu is working with subatomic particles in the physics lab. a positron is traveling in a straight line down the particle accelerator. tafu models its position with the function p(t)= t2 t â 1 where t>1. in the limit calculations below, if you need to use -â or â, enter -infinity or infinity. (a) calculate the limit

Answers

Answer:

Infinity

Explanation:

When you have a limit approaching infinity one method you can use is to remember that the highest power dominants all of the other ones so when we have (t^2)/t-1 like in your problem, we see that t^2 has the highest power of 2 so if that's going to infinity and it's not being divided by any powers higher than it will just be inifinity.

We have that for the Question, it can be said that  in the limit calculations below, if you need to use -â or â, enter -infinity or infinity. the limit is

[tex]Lim_{t->\infty} p(t)= \infty[/tex]

From the question we are told

Tafu is working with subatomic particles in the physics lab. a positron is traveling in a straight line down the particle accelerator.

tafu models its position with the function

p(t)= t2 t â 1 where t>1.

in the limit calculations below, if you need to use -â or â, enter -infinity or infinity.

(a) calculate the limit

Generally the equation for the Question  is mathematically given as

[tex]p(t)=\frac{t^2}{t-1}\\\\Therefore\\\\For Lim_{\infty}\\\\We have\\\\ Lim_{t->\infty} p(t)= Lim_{t->\infty}\frac{t^2}{t-1}\\\\[/tex]

Since, the equivalent degree of numerator (t^2) is greater than that of the denominator

[tex]Lim_{t->\infty} p(t)= \infty[/tex]

For more information on this visit

https://brainly.com/question/23379286

A 250 kg car has 6875 kg•m/s of momentum. What is it’s velocity?

Answers

Answer:

v = 27.5 m/s

Explanation:

p = m × v

6,875 = 250 × v

250v = 6,875

v = 6,875/250

v = 27.5 m/s

The Lotus Evija has an electric engine with 2000 horsepower. Which is equal to how
many watts of power?

Answers

Answer:

Power = 1471000[W]

Explanation:

In order to solve this problem, we must use the conversion factor of horsepower to Watts.

1 [Hp] → 735.5 [W]

Now using the conversion factor:

[tex]2000[Hp]*\frac{735.5W}{1Hp}=1471000[W][/tex]

The cheetah can run a distance of 275 m for 9 seconds. Calculate its speed.

Answers

Answer: 110000

Explanation:

26/9=30.5555555556

30.5555555556 x 60=1833.33333333

110000 x 60=110000

Refer to your Expeditions in Reading book for a complete version of this text.

Based on “Solar Power for Public Buildings,” which answer best states the author’s position on the use of solar power in California?


A The use of solar energy will double the pollution produced in California.

B The state’s tap water will be purer if processed in solar-powered plants.

C Increasing the use of solar power will positively impact the environment.

D Solar panels remove most of the toxic chemicals found in the atmosphere.

Answers

Answer:

d

Explanation:

Answer:

D. Solar panels remove most of the toxic chemicals found in the atmosphere.

People do not believe it is possible to use the sun's energy to create electricity.

Explanation:

I did the test.

An object is raised by a height of 8.95 m and gains 3099.1 J in its gravitational potential store. If the object has a mass of 961.1 kg, what is the strength of the gravitational field in N/kg? Give your answer to 2 decimal places.

Answers

Answer: Calculate GPE for different gravity of different enviornments - Earth, the Moon, ... kg, g, lb, oz ... variable in the physics equation for gravitational potential energy, when three of ... PEg or PE = gravitational potential energy; m = mass of an object ... have 147.15 Joules of potential energy, PE = 3kg * 9.81 m/s2 * 5m = 147.15 J.

4) A boy pulls a wagon with a force of 6N to the
left as another boy pushes it with a force of 4N to
the left. What is the net force?

Answers

10N

F=(6N east)+(4N east)=10N east

If the wavelength is 10 m and the frequency is 5 Hz, what is the wave speed?

Answers

V = f x wavelength
V = 5 x 10
V = 50m/s

bro my mom just baought em

Answers

Answer:

weow hahaha lol!

Explanation:

Answer:

LOLOLOLOLOL LOL

Explanation:

Jeremy walked at an average rate of speed of 5 km/h. how far had Jeremy walked in 15 minutes?

Answers

Answer:

1 half kilometer is right answer

Well if we know he can walk 5km in one hour (or 60 minutes) we can do ratios,,,

Km : minutes
5 : 60
: 15


We can do 5 divided by 60 multiplied by 15 to get the unknown km

This will give us 5/4 or 1.25

So he can walk 1.25 km in 15 minutes.


Hope this helps! Any questions let me know :)

Show the steps im confused.
The answer is 14 m/s

Answers

Answer:

14 m/s

Explanation:

KE=1/2mv^2

5880J= 1/2(60kg)v^2

5880J=(30)(V^2)

5880/30=V^2

196=v^2

square root of 196 is 14

So u divide the mass by two
Then KE/M and square root it
And u should end up with (image)
And solve

I’m not good at explaining
I hope this helps:)

what is the difference between the pressure exerted by a soild and by a liquid ?

Answers

A liquid is a watery substance and a solid is a hard thing


A bag weighing 20 N is pushed horizontally a distance of 35 m across a
level floor by a force of 10 N, How much work is done on the bag in
Joules? W=Fd *

Answers

Answer:

350J

Explanation:

Given parameters:

Weight of bag  = 20N

Distance moved horizontally  = 35m

Force applied  = 10N

Unknown:

Work done on the bag  = ?

Solution:

Work done is the force applied to move a body through given distance.

  Work done  = Force applied x distance

So;

 Work done  = 10 x 35  = 350J

12. A student has a set of masses to use in an experiment. Which mass has the greatest
inertia?
A. lg mass
B. 5g mass
C. 25g mass
P. 1000 mass

Answers

Answer:c

Explanation:

DESPERATE WILL GIVE BRAINLIST AND THANKS
What is one way that genetic engineering could help humans?

A. Gene therapy may be able to help people with genetic disorders make cells that work properly and alleviate their symptoms.

B. Genetic engineering may help bring much needed vitamins and vaccines to people living in poverty.

C. Genetic engineering may help remove genetic predispositions for certain diseases, such as cancer, from a person’s DNA.


D. These are all ways genetic engineering could help humans.

Answers

Answer:

I Choose C, Because Genetically engineered bacteria and other microorganisms are currently used to produce human insulin, human growth hormone, a protein used in blood clotting, and other pharmaceuticals and the number of such compounds could increase in the future.

So Basically There Saying It Can Be Used To Remove Certain Diseases.

How does the sun maintain its high temperature and energy output?

Answers

Answer:

The core of the sun is the region that extends from the center to about 20–25% of the solar radius. It is here, in the core, where energy is produced by hydrogen atoms (H) being converted into nuclei of helium (He). ... The core is the only part of the sun that produces an appreciable amount of heat through fusion.

Explanation:

I got you

By not running out of fuel (Hydrogen).

Rest assured ... When the sun runs low on Hydrogen, it'll go through several complex changes, and it'll end up at much much lower temperature, with much much lower energy output.

what would the answer be​

Answers

Answer:

D

Explanation:

The density has a formula of d = m / V.

The volumes are given as the same.

The density will be

d_lead = 113/ V

d_aluminum = 27/V

It does not matter for this question what the volume actually is. Just note that the value of the volume is the same for each ball.

A: incorrect. If the volumes are the same, the density is not the same because the masses are different.

B: incorrect. If the density of the two balls was less than water, the two balls would float. Never going to happen unless the balls are thin shells.

C: incorrect. The exact opposite is the answer.

D: Correct. This is the answer.

What is the unit of a force, and what is 1 unit equivalent to?

Answers

Answer:

Newton

Explanation:

The unit of force is Newton and it is given after Sir Isaac Newton for his tremendous works in this regard.

 Force is the product of mass and acceleration of a body.

    Force  = mass x acceleration  

 The unit of mass = kg

                    acceleration  = m/s²

So;

      1N  = 1kgm/s²

Therefore, the unit of force is newtons and 1N is equal to  1kgm/s²

A switch and a fuse should be connected with a live wire in an electric circuit​

Answers

Answer is A switch or a fuse in an electrical circuit is always connected to the live wire so that the socket or appliance is not live when switched off.

i hope it is helpful

How much thermal energy does it take to raise the temperature of 2.5 kg of
plastic from 15°C to 75°C? The specific heat of plastic is 2.60 kJ/(kg.°C)

Answers

Answer:

390kJ

Explanation:

Is a violin and battery potential energy?

Answers

Explanation:  

In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potential energy of an object that depends on its mass and its distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field. The battery is storing the energy but give it something to power and it'll give its energy to the object and a violin strings are like ruber band and if you play the violin it releases a new type of energy sound energy.

2 sets of waves with the top waves labeled A having more closely spaced crests than the bottom waves labeled B.
Which answer choice provides the best set of labels for Wave A and Wave B?

Wave A: Longitudinal Wave
Wave B: Transverse Wave
Wave A: High Frequency Wave
Wave B: Low Frequency Wave
Wave A: Transverse Wave
Wave B: Longitudinal Wave
Wave A: Low Frequency Wave
Wave B: High Frequency Wave

The answer is d and FREE PTS!!!

Answers

Answer:

A: High Frequency Wave Wave B: Low Frequency Wave Wave

Explanation:

The high-frequency waves are those that have a range of 3 to 30 MHz and have a longer wavelength that has more energy than a low-frequency wave and the more closer are the crest of the waves the more is frequency.

Low-frequency ranges from 30 to 300 kHz and ranges from 10 to 1 km and is suitable for long-distance communication. Mainly used in aircraft navigation and weather systems.

(Just to help)

Have a good day!

Answer:

A

Explanation:

HELP FAST
I WILL MARK BRAINLEST




The diagram below shows a sled moving along a smooth, frictionless track.
Section 1
Section 2
Section 4
Section 3
In which sections of the track will the sled experience an unbalanced force?
A Sections 1 and 3
B Sections 2 and 3
C Sections 2 and 4
D Sections 3 and 4

Answers

Answer:

C. 2 and 4

Explanation:

my teacher went over it and the answer was that

The sections of the track in which the sled would experience an unbalanced force are: C. Sections 2 and 4.

The two types of force.

In Science, there are two (2) main types of force that acts on an object and these include:

Balanced forceUnbalanced force

What is an unbalanced force?

An unbalanced force refers to a type of force that occurs when two (2) or more forces acting on an object are unequal in magnitude, and as such, it typically results in a change of motion.

In this scenario, the sections of the track in which the sled would experience an unbalanced force are sections 2 and 4 respectively.

Read more on unbalanced force here: brainly.com/question/931387

When power and current are known use R = P/I^2 to calculate the resistance.
P = 300 watts
C = 30amps
R = ?
R = resistance, P = Power, 1 = Current

Answers

[tex]\bf{ \underline{Given:- }}[/tex]

[tex] \sf• \: Power \:( P) = 300 \: watts[/tex]

[tex] \sf• \: Current \: (I) = 30 \: amps[/tex]

[tex] \\ [/tex]

[tex]\bf{ \underline{To \:  Find:- }}[/tex]

[tex] \sf• \: The \: Resistance [/tex]

[tex] \\ [/tex]

[tex] \huge\bf{ \underline{Solution :-:- }}[/tex]

[tex] \bf \red {\bigstar{ Formula \: of \: Power \: (P) = \frac{ {I}^{2} }{R}}}[/tex]

[tex] \sf \rightarrow 300= \frac{ {30}^{2} }{ R} [/tex]

[tex] \sf \rightarrow 300 = \frac{900}{ R} [/tex]

[tex] \rightarrow \sf R = \frac{300}{900} [/tex]

[tex] \rightarrow \sf R = \frac{1}{3} [/tex]

[tex] \rightarrow \sf R = 0.33[/tex]

[tex] \bf \purple{Hence, \: the \: resistance \: is \: 0.33 \: Ω \: . }[/tex]

The
of a wave is the maximum distance that the
particles in a medium move from their rest position as the wave passes.

Answers

The   AMPLITUDE  of a wave is the maximum distance that the particles in a medium move from their rest position as the wave passes.

Match each chemical name with the correct chemical formula.

Here are the formula choices:

A. S7O2

B. SO4

C. SO3

D. SO

E. S6O5

Answers

Is there any chemical names listed ?

Juan rides his horse with a constant
speed of 18 km/h. How far can he travel
in 1/2 hour?

Answers

Answer:

He traveled 9km

Explanation:

To do this problem you need to use the equation which is Speed= distance/time and this problem gives you the speed which is 18 km/h and it gives you the time 1/2 hour so you write the equation 18= d/ 1/2 which his distance is 9km

what force acts between earth and the moon

Answers

Explanation:

Gravity

Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).

Other Questions
please help me! 10 points!! HELP PLEASE 80 POINTS :) On October 1, 2018, Jay Pryor established an interior decorating business, Pioneer Designs. During the month, Jay completed the following transactions related to the business:Oct. 1 Jay transferred cash from a personal bank account to an account to be used for the business in exchange for common stock, $32,800.4 Paid rent for period of October 4 to end of month, $3,180.10 Purchased a used truck for $27,000, paying $3,000 cash and giving a note payable for the remainder.13 Purchased equipment on account, $12,790.14 Purchased supplies for cash, $2,200.15 Paid annual premiums on property and casualty insurance, $4,920.15 Received cash for job completed, $13,780.Enter the following transactions on Page 2 of the two-column journal:21 Paid creditor a portion of the amount owed for equipment purchased on October 13, $4,560.24 Recorded jobs completed on account and sent invoices to customers, $15,680.26 Received an invoice for truck expenses, to be paid in November, $1,440.27 Paid utilities expense, $1,640.27 Paid miscellaneous expenses, $590.29 Received cash from customers on account, $6,560.30 Paid wages of employees, $4,360.31 Paid dividends, $3,640.Required:1. Journalize and insert the posting references for each transaction in a two-column journal beginning on Page 1, referring to the following chart of accounts in selecting the accounts to be debited and credited. For a compound transaction, if an amount box does not require an entry, leave it blank.11 Cash 31 Common Stock12 Accounts Receivable 33 Dividends13 Supplies 41 Fees Earned14 Prepaid Insurance 51 Wages Expense16 Equipment 53 Rent Expense18 Truck 54 Utilities Expense21 Notes Payable 55 Truck Expense22 Accounts Payable 59 Miscellaneous Expense HELP HELP HELP HELP IM BEGGING YOU PLEASE PLEASE!!! For each of the situations described below,give an example(if its possible) or explain why its not possible.a. A set of vectors that does not span R^3. After adding one more vector, the setdoes spanR3.b. A set of vectors that are linearly dependent. 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