An athlete runs four laps of a 400 m track. What is the athlete's total displacement?
Answers
Answer:
○ 0 [tex]\checkmark[/tex]
Explanation:
Even if the athelete runs four laps of a 400 m track, its displacement will be 0 because the displacement is the shortest distance from its to final position. And, here the final and initial position is same since he comes to its initial position after covering certain distance. So, displacement is 0.
Related Questions
dentro de cada rama de deportes que existen se debe mantene normas que hacen al atleta cada día ser mejor.¿ Cuales son esas normas? *
Answers
El término deporte engloba diversas formas de ejercicio, juegos y competiciones, que en su mayoría se relacionan con la actividad física de las personas. Así, los deportes más populares a nivel mundial son el fútbol, el baloncesto, el tenis, el rugby, etc.
Todos estos deportes, sin importar sus características, requieren de sus deportistas una serie de normas de conducta que hacen que los mismos sean cada vez mejores en sus respectivos deportes. Estas son, fundamentalmente, un buen entrenamiento, una correcta alimentación, un suficiente descanso y un seguimiento de las reglas del deporte.
La falta de alguna de estas 4 normas de conducta hace que el atleta no maximice su rendimiento, influyendo en forma negativa en sus resultados competitivos.
Aprende más en https://brainly.lat/tarea/4022022
a loaf of bread has a mass of 2000g and a volume of 500 cm3. what is the density of the bread
Answers
Answer:
4g/cm^3
Explanation:
density = mass / volume
= 2000 / 500
= 4g/cm^3
The sky is blue because: Select one: a. the index of refraction for air is slightly larger for blue than for red b. atomic hydrogen is blue c. air molecules tend to polarize light along a horizontal axis d. oxygen and nitrogen molecules are small compared to the wavelengths of visible light e. oxygen molecules have a lower energy ground state than nitrogen molecules
Answers
Answer:
a. the index of refraction for air is slightly larger for blue than for red
If the N pole of a magnet is brought near to an unmagnetized iron, nail, then the nail becomes
Answers
Answer:
The nail also magnatized .
what does it mean by that "length of an object is m"
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The mass of an object is 4G and it has a density of 5gm^-3. what is the volume
Answers
Explanation:
Density is mass in grams over volume in cubic centimeters.
So it is
[tex]\frac{4g}{5cm^{-3} }[/tex] = 0.8 g/cm[tex]^{3}[/tex]
The unit is grams per cubic centimeter.
NB - density can also be kilograms over cubic meters
Write down the role played by four digestive juices in digestion and the
organs which secrete them.
Answers
Answer:
Digestive juices secreted by various organs such as salivary glands in the mouth, stomach, liver and pancreas help in the process of digestion of food. Saliva secreted by the salivary glands in the mouth aids in the breakdown of starch present in the food to simple sugar
Explanation:
You tie a string to the ceiling and attach a weight to the end. You hold the weight next to your face but not touching it and then let go. The weight swings down and away from you and then starts swinging back toward you. If you do not move, will it hit you?
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Answer:
Depends on how long the string is, how heavy the weight, and how high you let go of it.
But it will most likely hit you :)
Define length.Convert 20cm into meter
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Now
[tex]\\ \sf\longmapsto 20cm[/tex]
[tex]\\ \sf\longmapsto 2\times 10^{-1}[/tex]
[tex]\\ \sf\longmapsto 0.1m[/tex]
A car covers a distace of 20km in 20 seconds. Calculate its speed in km/h m/s.
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Answer:
speed = 3600 kilometers per hour
= 3600 km/h
speed = 1000 meters per second
= 1000 m/s
Answer From Gauth Math
Fill in the blanks. a. Atoms of two different elements are
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atoms of two different elements have vanders wall bond and are not similar in properties individual
Compounds
EXPLANATION
Compounds are made of two or more atoms of different elements, such as water (H2O) and methane (CH4). Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom.
An object is moving across a surface, but it does not gain or lose speed. Which best describes the object's force?
O The net force is positive.
O The net force is zero.
The positive force is greater than the negative force.
O The negative force is greater than the positive force.
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Answers
Answer:
The net force is positive
Explanation:
This would mean that altogether, the force would cause the object to always be going the same way, and if it is not gaining or losing speed, we can say the force has not changed and that the object has reached terminal velocity. It is not correct to say that the positive is greater than the negative as friction also causes some type of effect and it is neither positive nor negative
what was the Cenozoic era
Answers
how to find the mechanical advantage
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Answer:
[tex]{ \bf{mechanical \: adv = \frac{load}{effort} }}[/tex]
Determine whether the vector field is conservative. If it is, find a potential function for the vector field.
Answers
Answer:
Electric field intensity is not conservative vector
Explanation:
Only electrostatic fields i.e. fields generated by a static charge distribution, are conservative in nature
Solve for M₂
Base Equation: M₂ = Fr²/GM₁
F = 132N, G = 6.67 x 10⁻¹¹ Nm²/kg², r = .243m, and M₁ = 1.175 x 10⁴ kg, then what is M₂ = ?
Answers
Explanation:
M₂ = Fr²/GM₁
M₂ = [(132N)(.243m)²]/[(6.67*10^-11N*m²/kg)(1.175*10^4kg)]
M₂ = (7.79N*m²)/(7.84*10^-7N*m²)
M₂ = 9.94*10^6 kg
why should we change worn out tyres
Answers
Answer:
Your vehicle's tires work hard every time you go on the road. As they age, they become more and more worn down, especially if you use the same set of tires year round. As a result, your tires will need to be replaced. ... If you are driving on a dirt road, or one that is worn, chances are you will feel vibrations.
How do we aquire knowledge in science?
Answers
Answer:
By studying.
By paying attention to what the teacher is saying.
That's the way to receive knowledge.
HAVE A GREAT DAY
Explanation:
Please give me that little crown...
AND REMEMBER TO SMILE
calculate the mass of an ice block of volume 12m³. the density of the ice is 920kg/m³.
somebody help please
Answers
Mass = density • volume
so (12)(920)(kg/m^3•m^3)
11040 kg
If Earth's gravity pulls an object, causing it to accelerate to the ground, what
must be true about Earth?
A. It accelerates just as quickly in the direction away from the object.
B. It is being pulled toward the object by the object's gravity.
C. It accelerates just as quickly in the direction of the object.
D. It is being pushed away from the object by that same force.
Answers
Ans
It is being pulled toward the object by the objects gravity
Gravity:-
Sir Eizak Newton Founded the gravity.Gravity is a force between any object and earth by which they pull each other .The Acceleration due to gravity is represented by g =9.8m/s^2What is one Pascal pressure? What is its unit?
Answers
Explanation:
the force acting perpendicularly on unit area of surface
unit=pascle .
A pressure of one Newton per square meter .. The SI unit of 1 Pascal pressure is 1 Newton per square metre .
(9x10^2) + (1x10^2)
10x10^4
10x10^3
1x10^4
1x10^3
Answers
Answer:
10 x 10⁴
I hope it's helps you
Answer:
Yes
Explanation:
A skier is standing still on a flat area of snow.
The weight of the skier is 550 N. The total area of his skis in contact with the ground is 0.015
m2.
What is the pressure exerted on the ground by the skier?
3700 N / m2
37 000 N/m2
8.3 N/m2
0.83 N/m2
Answers
We know
[tex]\boxed{\sf Pressure=\dfrac{Force}{Area}}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{550}{0.015}[/tex]
[tex]\\ \sf\longmapsto Pressure=36666Pa[/tex]
[tex]\\ \sf\longmapsto Pressure=36666N/m^2[/tex]
Most nearest value is 37000N/m^2
Hence option b is correct
7 (a) Smoke particles are introduced into a glass box containing air. Light shines into the box so that, when observed through a microscope, the smoke particles can be seen as bright points of light. Describe the motion of the smoke particles and account for this motion in terms of the air molecules.
Answers
Answer:
smoke particles move in brownian motion (zig -zag motion ) .
Explanation:
this is because air molecules collide against smoke particles hence they attain kinetic energy which keeps them in continuous motion .
The motion of the smoke particles is Brownian motion that is the zigzag motion of the particles that particles move in a random direction.
What is a Brownian Movement?In chemistry, the term "Brownian Movement" refers to the random zigzagging motion of a particle that is typically seen under a high power ultra-microscope. The term "Brownian movement" refers to the exact motion of pollen grains in water, as described by Robert Brown.
More crucially, Albert Einstein eventually clarified the Brownian movement in his study by claiming that water molecules were responsible for moving the pollen. This discovery provided compelling proof that atoms and molecules exist.
According to the question, the reason is that air molecules collide against smoke particles, hence the particles get kinetic energy which keeps them in continuous motion or in zigzag motion.
To get more information about Brownian Movement :
https://brainly.com/question/20350065
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6. 15. A boy takes 5 seconds to reach each point from ‘A’ to ‘B’, ‘B’ to ‘C’ and ‘C’ to ‘D’ as
shown in the diagram. If AB = BC = CD = 20 m then which of the following information is
correct when the boy reaches point D from point A via BC?
Answers
Explanation:
Could you also show the diagram
which of the following is not an example of static charge?
a.
stationary electrons
b.
stationary protons
c.
moving electrons
d.
stationary neutrons
Answers
6. The average atomic mass of hydrogen is amu. 7. If a molecule is made of similar kind of atoms, then it is called atomic molecule. 8. The number of atoms present in a molecule is called its 9. One mole of any gas occupies ml at S.T.P 10 Atomicity of phosphorous is
Answers
I have no idea i’m so sorry
Explanation/
Have a good day
A liquid has a density of 2 g/mL, the volume is measured at 20 mL, what is the mass of the liquid?
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Answer: 40 grams, if it is two grams per mL and you have 20 mL, you multiply 2 grams/mL and you get the answer
the mass of earth is 6*10^24 and of mars is 6*10^23 and gravitational force is 6.67*10^16 ,find the distance between their centres.
Answers
Answer:
6× 10¹⁰ metres
Explanation:
F=(G×M1×M2)/r²
(6.67×10¹⁶)=((6.67×10^-11)(6×10²⁴)(6×10²³))/r²
r²=3.6×10²¹
Therefore r=6×10¹⁰ metres
pls,help ASAP .the question is in attachment
Answers
Answer:c
Explanation:
