A boy walks towards a stationary plane mirror at a speed of 12ms^1 what is the relative speed of approach of the boy and his image? (a)zero (b)1.2ms^-1 (c) 2.4ms^-1 (d)1.44ms^-1​

Answers

Answer 1

Answer:

a

Explanation:

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Related Questions

______ charges repel each other.

Answers

Answer:

like I commented it yesterday can i have brainiest

Explanation: oh and HI

Answer:

Like

Explanation:

I put it before but my answer got deleted

What do you call the shot that starts on the right side and continues through to the left
side for a right handed player?

Answers

Answer:

When a right-handed golfer’s tee shot curves to far to the left, the shot is described as a “hook.” This shot typically occurs when the club head moves across the ball from left to right, imparting side-spin on the ball

Energy cannot be created nor destroyed. A. Ella said "a lot of energy in the hot water has disappeared." Explain why her statement is wrong?

Answers

Answer:

See Explanation

Explanation:

The principle of conservation of energy states that; energy can neither be created nor destroyed but is converted from one form to another.

In view of this principle, Ella can not be correct when she says that a lot of energy has disappeared. The use of the term "disappeared" connotes the idea that the energy no longer exists which does not happen.

Hence, energy can not "disappear" from hot water rather the energy in the water may be transferred to the surroundings.

Would Lincoln, Nebraska or San Diego, California have a smaller range in average monthly temperatures

Answers

Answer: San diego

Because it is closer to the ocean

What is the process called when heat transfers through space in the form of radiation?

Answers

Answer:

Insolation

Explanation:

It's actually the process when heat is transferred from the sun to the surface of the earth

If you don’t know please move on if you know please help:)

Drag the correct term to each blank:
potential kinetic
energy being changed into
When a magnet causes a paper clip to move, it's an example of
energy.
A child running is an example of
energy.
A motionless iron object in the magnetic field of a magnet may be said to have
energy

Answers

Answer:

When a magnet causes a paper clip to move, it's an example of Potential energy being changed in to Kinetic energy

A child running is an example of Kinetic energy

A motionless iron object in the magnetic field of a magnet may be said to have Potential energy

What is the current flowing through a 10 resistor in a parallel circuit with a 120 V potential difference across it?
on​

Answers

Answer:

let current flow be x

Explanation:

than we know potential difference = energy supply / charge then 120 = 10 /x then x=12 therefore pd = 12 v

120=10/X
12=1/X
12•1=12
So the answer is 12
Hope this helps can u make me branliest please ❤️

Greg's family is planning a trip, and want to choose the method of transportation that travels with the most speed. Which should Greg's
family choose? (speed = distance time)
A, a bus traveling 60 km every two hours
O B. a car traveling 60 km every four hours
O C. a train traveling 120 km every four hours
OD. a plane traveling 120 km every two hours

Answers

Answer:

D

Explanation:

120/2= 60km per hour

please answer soon
a car is traveling along the highway at a constant velocity, what must be true about all the forces acting on the car?

Answers

equal to the force of friction exerted upon the car . ( how this is right )

1. What is the magnitude of the force on a charge of +40 μC that is 0.6 m from a charge of - 80 μC?

Answers

Answer:

The magnitude of the force is 79.893 N.

Explanation:

The magnitude of the electrostatic force between the two particles is determined by Coloumb's Law, whose formula is:

[tex]F = \frac{\kappa \cdot |q_{A}|\cdot |q_{B}|}{r^{2}}[/tex] (1)

Where:

[tex]\kappa[/tex] - Electrostatic constant, in newtons-square meters per square coulomb.

[tex]q_{A}, q_{B}[/tex] - Electric charges, in coulombs.

[tex]r[/tex] - Distance, in meters.

If we know that [tex]\kappa = 8.988\times 10^{9}\,\frac{N\cdot m^{2}}{C^{2}}[/tex], [tex]q_{A} = +40\times 10^{-6}\, C[/tex], [tex]q_{B} = - 80\times 10^{-6}\, C[/tex] and [tex]r = 0.6\,m[/tex], then the magnitude of the force is:

[tex]F = \frac{\kappa \cdot |q_{A}|\cdot |q_{B}|}{r^{2}}[/tex]

[tex]F = 79.893\,N[/tex]

The magnitude of the force is 79.893 N.

what is the main function of the circulatory system

Answers

Answer:

B

Explanation:

Answer:

The main function of the circulatory system is to carry nutrients to cells and waste away from cells.

Explanation:

Please Help Me!!!
Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C.
Which option best describes this information?
A.
These are the physical properties of water.
B.
These are the chemical properties of water.
C.
These are the physical changes water undergoes.
D.
These are the chemical changes water undergoes.
E.
These are the molecular changes water undergoes.

Answers

Answer:

There are the molecular changes water undergoes

1.Which of the following is the best example of motion?A.Waving your armsB.Tossing and turning in your bedC.Walking from home to schoolD.Your dog wagging his tail

Answers

Answer:

A

Explanation:

PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick a subject

Answers

Answer:

0.075 km/min

Explanation:

[tex]\frac{5km - 0km}{67 min - 0min} = 0.075 km/min[/tex]

PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick a subject

Answers

Velocity- speed in a direction
Time - how long it takes something to travel
Distance - how far something travels
Rate - how fast something changes position
Speed - distance per time
Speed -A
Distance-D
Time-E
Velocity -B
Rate-C

What is the relationship between temperature and kinetic energy?

Answers

Answer:

temperature is the average kinetic energy of the particles of matter. the hotter something is the more kinetic energy it has.

Explanation:

A ball with a volume of 1.0 L is filled with a gas at 5 atmospheres (atm). If the volume is reduced to 0.75 L without a change in temperature, what would be the pressure of the balloon? ​

Answers

Answer:

P2 = 6.67 atm

Explanation:

Given the following data;

Initial volume = 1 Liters

Initial pressure = 5 atm

Final volume = 0.75 Liters

To find the final pressure P2, we would use Boyles' law.

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

[tex] PV = K[/tex]

[tex] P_{1}V_{1} = P_{2}V_{2} [/tex]

Substituting into the equation, we have;

[tex] 5 * 1 = P_{2} * 0.75 [/tex]

[tex] 5 = 0.75_{2} [/tex]

[tex] P_{2} = \frac {5}{0.75}[/tex]

[tex] P_{2} = 6.67[/tex]

P2 = 6.67 atm

Therefore, the new pressure is 6.67 atm.

The arrows on a free body diagram represent what?

1.) All of the forces acting on an object.

2.) The inertia of an object.

3.) The net force on an object.

4.) The motion of an object.

Answers

Answer:

4

Explanation:

because they show the direction where that particular object is going and forces are vectors they have both magnitude and direction

What is electric force?
-The force that happens between two charged particles.
-The force that happens when one particle is larger than the other.
-The force that happens when two particles are in a similar type of motion,
-The force that happens between two particles with mass.

Answers

Answer:

The force that happens between two particles with mass

El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una correcta asociación la cual sería * 3 puntos

Answers

La respuesta correcta para esta pregunta abierta es la siguiente.

No incluyes opciones, incisos, o alguna referencia específica para responder esta pregunta.

De ahí que responderemos en términos generales basándonos en nuestro conocimiento previo.

El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una correcta asociación la cual sería benéfica para ambos campos de conocimiento porque de esta manera se estarían complementando y enriqueciendo el uno al otro.

Cuando la ciencia -en este caso, la cosmología- acepte los conceptos metafísico que no tienen un sustento científico pero que sí contemplan alternativas en el mundo espiritual que son aceptadas por una innumerable cantidad de personas, entonces los expertos podrán plantear nuevas y diferentes posibilidades de entender los fenómenos que al día de hoy, carecen de una convincente explicación.

Tanto la cosmología como la metafísica podrían mostrarse más receptivos a las aportaciones de una y la otra, con objeto de poder aumentar las posibilidades de comprender un fenómeno. No necesariamente debe haber una teoría científica para poder avanzar en el conocimiento de algún tema. De ahí que las aportaciones metafísicas sean válidas como una alternativa de investigación.

HELPPP
A 1.50-kg cart rolls along a horizontal table at a constant speed of 1.70 m/s. A ball of soft putty is dropped from a stationary hand onto the cart as it passes underneath. If the speed of the cart is reduced to 1.53 m/s, calculate the mass of the ball of putty. This collision is completely inelastic

Answers

Answer:

0.17 kg

Explanation:

mc = mass of cart

mb = mass of ball

vc = speed of cart before collision

vb = speed of ball before collision (vb = 0)

v' = speed of cart and ball after collision

mc . vc + mb . vb = (mc + mb) . v'

(1.5)(1.7) + mb(0) = (1.5 + mb) . 1.53

2.55 + 0 = (1.5 + mb) . 1.53

2.55/1.53 = 1.5 + mb

5/3 = 3/2 + mb ( I change it to fraction)

mb = 5/3 - 3/2 = 10/6 - 9/6 = 1/6 kg

mb = 1/6 kg = 0.17 kg

PLSS HELPP

Are humans evolving? What will humans look like in 100,000 years in the future or longer?

Answers

Answer:

yes

Explanation:

A squash ball with an initial velocity of 19.21 m/s [W] is hit by a squash racket, changing its velocity to 40.22 m/s [E] in 0.312 s. What is the squash ball’s average acceleration?

Answers

Acceleration = (change in velocity) / (time for the change)

Change in velocity = 59.43 m/s East

Time for the change = 0.312 s

Acceleration = 190.5 m/s^2 East

Is this right? Please help me ITS SOCIOLOGY

Answers

Yes, this is correct Answer.

What is the origin behind the term " cell phone "

Answers

Answer:

Rae Young at Bell Labs. They diagrammed a network of wireless towers into what they called a cellular layout. Cellular was the chosen term because each tower and its coverage map looked like a biological cell. Eventually, phones that operated on this type of wireless network were called cellular phones.

Explanation:

Protons are______
charged particles.

Answers

Answer: Protons are positively charged particles

Explanation:

Positive charged partials



1.
David is 10% taller than Peter and Peter is 5% shorter than John. It is given that the height of Peter
is 171 cm.
(a) Find the height of John.
Iso
(2 marks)
(b) David claims that he is the tallest person among the three. Do you agree? Explain your answer.
(2 marks)​

Answers

Answer:

I don't know if I can help you with that

What is the potential energy of a 55 kg box that is sitting 8.0 m above the ground?

Answers

Answer:

4400

Explanation:

pe=mgh=55*10*8=4400

A Navy vessel is traveling due north during wartime. A torpedo has been launched by an enemy directly toward the stern (rear) of the vessel. Can the vessel outrun the torpedo if both continue in a straight line due north?

A) Yes, the Navy vessel is faster

B) No, the Navy vessel is slower

C) Maybe, since both travel at the same speed

D) Maybe, based on the temperature of the water

Answers

Answer:

The correct option is;

B) No, the Navy vessel is slower

Explanation:

The speed of some torpedoes can be as high as 370 km/h. The average speed of a fast Navy vessel is approximately 110 km/h

Therefore, the torpedoes travel approximately 3 times as fast as the (slower) Navy vessel, such that the torpedo covers three times the distance of the Navy vessel in the same time and therefore, if the Navy vessel and the torpedo continue in a straight line (in the same direction) due north the vessel can not outrun the torpedo

Therefore, no the Navy vessel travels slower than a torpedo.

What happens to energy when it is consumed?

Answers

Answer:

It converts to other energy

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HElP what There is a $20 shirt and it is 1/3% off The diagram shows a large pond that dried out and formed into two smaller ponds. What type of speciation occurred in the fish?A. allopatric B. peripatricC. parapatric D. sympatric PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! 9. Which of the following fractions is equivalent to 1.68 The PTA at Central High School is concerned that students who graduate from the school do not score well on mathematics achievement tests, on average, as to students from other schools in the district. The mean score for students in the larger school district is 98. The school principal randomly selects 15 students from the graduating class and administers the standardized mathematics achievement test. The scores of the 15 students from Central High are as follows: 105, 98, 101, 110, 96, 103, 104, 101, 98, 105, 112, 95, 105, 100, 108 (a) Formally state the hypothesis necessary to conduct a non-directional test. (b) Complete the test at the 05 level of significance, and state your conclusions in English. (c) Construct and interpret the 95% confidence interval around the sample mean. (d) Compute the effect size Hedge's g Factors that affect the rate at which candle wax melts I need to help me with this problem I'm not sure what I'm supposed to do.Consider a point with rectangular coordinates(x,y).Ifx Sammy uses 7.6 pints of blue paint and white paint to paint her bedroom walls. 3 4 of this amount is blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls? A mi me(encantar) nadar en la piscina.conjugate the suggested verb into the imperfect tense . use accents ! Which education requirements must anorthodontist fulfill? Select all that apply.^ dental schoolX associate's degree^ graduate program^ bachelor's degreeANSWERS MARKED BY ^ AAAAAAAAAAAAH!!! NEED HELP ASAP!!! WILL GIVE BRAINLIEST AND POINTS!! In the data set below, what is the range? 9, 4, 9, 2, 8, 2, 1 Pls help me out here!!!In two or more complete sentences compare transformation and transfection gene therapies. Use the net to find the surface area of the rectangular prism Goods commonly on ships from Europe to Africa included ____________.The Middle Passage brought enslaved persons from ____________.Ships carried goods such as rum and cotton from Americans to __________. According to the video, what tasks do Traffic Technicians commonly perform? Check all that apply.setting the length of time a light stays redoperating large vehiclescounting vehiclesmaking sure a road crew is protectedanalyzing accident reportscampaigning for transportation lawsnegotiating with police officials HELP! 20 mL of hydrogen measured at 15C is heated to 35C.What is the new volume at the same pressure? What is the answer to 10.50 X 8.5 pls help :\ Look at the picture, for the problem This table represents Lola's check register. Her checking account had a balance of $1,685.25 on January 1. Use the information on the check register to determine the balance of Lola's checking account after the transaction on February 2 Enter your answer in the box