Answer:
14.14 metres
Explanation:
Given that a bird flies 20 meters North, 10 meters South, and then 10 meters East.
the bird’s displacement can be calculated by first subtracting the value of distance from the south from the north.
20 - 10 = 10m
The displacement will be achieved by using pythagorean theorem
Displacement = sqrt ( 10^2 + 10^2 )
Displacement = sqrt( 200)
Displacement = 14.14 m
Therefore the displacement of the bird is 14.14 metres.
Please help!!
If you move 3 meters East and move 4 meters north what is the distance and what is the displacement?
Answer:
Si un objeto se mueve en relación a un marco de referencia (por ejemplo, si una profesora se mueve a la derecha con respecto al pizarrón, o un pasajero se mueve hacia la parte trasera de un avión), entonces la posición del objeto cambia. A este cambio en la posición se le conoce como desplazamiento. La palabra desplazamiento implica que un objeto se movió, o se desplazó.
Explanation:
El desplazamiento se define como el cambio en la posición de un objeto. Se puede definir de manera matemática con la siguiente ecuación:
\text{desplazamiento}=\Delta x=x_f-x_0desplazamiento=Δx=x
f
−x
0
start text, d, e, s, p, l, a, z, a, m, i, e, n, t, o, end text, equals, delta, x, equals, x, start subscript, f, end subscript, minus, x, start subscript, 0, end subscript
x_fx
f
x, start subscript, f, end subscript se refiere al valor de la posición final.
x_0x
0
x, start subscript, 0, end subscript se refiere al valor de la posición inicial.
\Delta xΔxdelta, x es el símbolo que se usa para representar el desplazamiento.
Debemos ser cuidados al usar la palabra distancia, ya que hay dos maneras de usar el término en física. Podemos hablar acerca de la distancia entre dos puntos, o podemos hablar de la distancia recorrida por un objeto.
La distancia se define como la magnitud o el tamaño del desplazamiento entre dos posiciones. Observa que la distancia entre dos posiciones no es la misma que la distancia recorrida entre ellas.
Es importante darse cuenta que la distancia recorrida no tiene que ser igual a la magnitud del desplazamiento (es decir, la distancia entre dos puntos). De manera específica, si un objeto cambia de dirección en su trayecto, la distancia total recorrida será mayor que la magnitud del desplazamiento entre esos dos puntos. Ve los ejemplos resueltos a continuación.
Describe what happens to the water molecules as heat energy is added and the water changes from solid to liquid to gas
Answer:
Explanation:
Adding heat can cause ice (a solid) to melt to form water (a liquid). Removing heat causes water (a liquid) to freeze to form ice (a solid). When water changes to a solid or a gas, we say it changes to a different state of matter. Even though the water's physical form changes, its molecules stay the same.
a chemical reaction a temperature change may occur because of the breaking or formation of chemical bonds that release excess energy. Since there is a change in temperature why wouldn't this reaction be considered a physical change instead of a chemical change ?
Answer:
well, a chemical change will have to have something about its physically feature to be changed and it cannot be undone, say you burned wood, thats a chemical change as you cannot unburn it or remove the markings of the burn
:
Mrs. Ernest wants to know how much light her daisies need. She places one pot of daisies under a sunlamp and another pot of daises on a windowsill. Each day she gives both plants the same amount of water. Which term BEST describes the amount of water given to the plants each day?
Answer:
Control Variable
Explanation:
A control variable is a variable that is held constant throughout the cause of an experiment, in order to test accurately the relationship between the dependent and the independent variables. The control variable, which is amount of water needed by the plants in this case, has the property of affecting the growth of the daisies, hence if it is not held constant, the result of the experiment might not be accurately attributed to the light source alone.
Therefore, to say with certainty that the difference seen in both categories of plants was from the difference in lighting alone, other variables (amount of water, type of soil, temperature etc.) has to be held constant
A simple pendulum makes 10 oscillations in 20 seconds. What is the time period and frequency of its oscillation? with steps and formula
Answer:
When a simple pendulum makes 10 oscillation in 20 seconds, the time taken for each osillation
=20/10
= 2seconds
hence, as the time period is calculated to be 10secondd, the frequency of oscillation
=1/T
=1/2
= 0.5 here's
A stunt man projects himself horizontal from a height of 60m. He lands 150m away from where he was launched. How fast was he launched?
A.) 54.87 m/s
B.) 43.98 m/s
C.) 47.46 m/s
D.) 42.87 m/s
Answer:
D) 42.87 m/s
Explanation:
First, find the time it takes him to land. Given in the y direction:
Δy = 60 m
v₀ = 0 m/s
a = 9.8 m/s²
Find: t
Δy = v₀ t + ½ at²
60 m = (0 m/s) t + ½ (9.8 m/s²) t²
t = 3.5 s
Next, find the speed needed to travel the horizontal distance in that time. Given in the x direction:
Δx = 60 m
a = 0 m/s²
t = 3.5 s
Find: v₀
Δy = v₀ t + ½ at²
150 m = v₀ (3.5 s) + ½ (0 m/s²) (3.5 s)²
v₀ = 42.87 m/s
newtons second law of motion-skateboard
Answer:
??? I don't get it, please explain. What is your question????
Explanation:
Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble A was initially moving at a velocity of 0.5 m/s, but after the collision it has a velocity of −0.1 m/s. What is the resulting velocity of marble B after the collision? Be sure to show your work for solving this problem along with the final answer.
Answer:
2.4 m/s
Explanation:
Momentum is conserved.
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(0.08 kg)(0.5 m/s) + (0.05 kg)(0 m/s) = (0.08 kg)(-0.1 m/s) + (0.05 kg) v
0.04 kg m/s = -0.08 kg m/s + (0.05 kg) v
0.12 kg m/s = (0.05 kg) v
v = 2.4 m/s
Which scientist's idea what "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."
Answer:
Bernoulli
Explanation:
Hello! I took the k12 science quiz! I hope you get an A!
Have a blessed day! :)
Bernoulli was the scientist who gave the idea that "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."
What is an ideal gas?It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,
Bernoulli was the scientist who gave the idea that "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."
The kinetic molecular theory of gases is stated via Bernoulli's principle. The hypothesis states that gas particles are tiny and separated from one another. But when things travel through them, they change from their position as a result of fluid dynamics.
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How does population stimulate social change?
Answer:
A change in the size of the population may bring about changes in the culture. For example, food brought to this country by immigrant groups have become common in many American kitchens. Population increases and decreases affect the economy. For example, by increasing the demand for goods and services, a growing population may increase employment and stimulate the economy. An increase in the general population also means that there are more people occupying the same amount of space, which creates more crowded conditions. In addition, the larger population brings increased demand for energy, food, housing, schools, stores, and transportation. People also bring about changes simply by moving from one place to another. Migrations of people within a country can cause social changes, such as the loss of regional distinction within the country. Social and cultural changes also result from changes in the average age of a population. When fewer people are having babies, for example, there is less need for schools, recreation centers, and other services geared toward children.
Explanation:
Population changes stimulate social change in a variety of ways, including direct and indirect changes in food habits and the educational system, migration patterns, and people's overall mental and physical health.
What is the effect of population growth?Population growth is a negative factor for the environment because rural areas are converting to urban areas and more people are migrating to cities. Due to this rapid population growth, a food shortage will occur, the cost of living will increase in the advanced cities, the demand will increase but not the supply, and this will lead to mental pressure on the generation to keep a place to live and food to eat and in this way the social change will happen.
Hence, population changes stimulate social change in a variety of ways, including direct and indirect changes in food habits and the educational system, migration patterns, and people's overall mental and physical health.
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a mountain biker cycling a trail traveling at 5.4 m/s begins to slow down when she notice a wooden bridge ahead has flooded. if she begins braking when she is 15.0 m from the bridge and comes to a stop just before reaching the bridge, how long did it take her to stop ?
Answer:
t = 5.56 s
Explanation:
In order to calculate the time interval taken by the mountain biker to come to a stop, we will use third equation of motion and first find the deceleration:
2as = Vf² - Vi²
where,
a = deceleration = ?
s = distance = 15 m
Vf = Final Velocity = 0 m/s
Vi = Initial Velocity = 5.4 m/s
Therefore,
2a(15 m) = (0 m/s²) - (5.4 m/s)²
a = - 0.972 m/s²
Now, we use 1st equation of motion:
Vf = Vi + at
therefore,
0 m/s = 5.4 m/s + (-0.972 m/s²)(t)
t = (5.4 m/s)/(0.972 m/s²)
t = 5.56 s
The time taken should be t = 5.56 s
Calculation of the time taken:here we used the third equation of motion
But first we determine the deceleration.
We know that
2as = Vf² - Vi²
here,
a = deceleration = ?
s = distance = 15 m
Vf = Final Velocity = 0 m/s
Vi = Initial Velocity = 5.4 m/s
So,
2a(15 m) = (0 m/s²) - (5.4 m/s)²
a = - 0.972 m/s²
Now, we use 1st equation of motion:
So,
Vf = Vi + at
0 m/s = 5.4 m/s + (-0.972 m/s²)(t)
t = (5.4 m/s)/(0.972 m/s²)
t = 5.56 s
Hence, The time taken should be t = 5.56 s
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What are a few questions Civics can help you answer?
Answer:
go on Quizlet they mosly have answers for civics
Explanation:
Modern scientists say that electrons are found in a ...
a. cloud
b. orbital
c. pudding
d. orb
____________ occurs when heat is transferred into an object through motion or movement; an example would be boiling water. a conduction b convection c radiation d heat
Its a Conduction NO FOR REAL ITS A
Answer:
c, convection
Explanation:
edge 2020
PLEASE HURRY WILL GIVE BRAINLIEST FOR FIRST ANSWER!!!
What is the kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s? (Formula:)
25 J
53
503
1003
What forces come in pairs? Give an example help ASAP
In scientific notation 674.3mm equals
Answer:
6.743 x 10² mm
Explanation:
(01.06 LC)
When is equilibrium reached? (5 points)
a
When supply is greater than demand
b
When demand equals supply
С
When supply is less than demand
d
When demand and supply both change
Answer:
Equilibrium is reached when demand equals supply.
Explanation:
Demand is the amount that consumers want and can buy of a certain product or service in a specific period of time and at a certain price. On the other hand, the supply is the amount that producers want and can sell of a certain product or service in a specific period of time and at a certain price.
In market equilibrium, the quantity demanded of the product or service equals the quantity supplied, so the price also equals. In other words, when market equilibrium is reached, demand and supply are the same, with their corresponding equilibrium price and quantity.
Two situations can occur:
When the quantity demanded is greater than the quantity supplied, the market is in a situation of excess demand. On the other hand, it may happen that the price at which the products are being offered is greater than the equilibrium price and the quantity supplied is greater than the quantity demanded. Then there is an excess supply.Equilibrium is reached when demand equals supply.
A ball is released from rest at the top of a ramp and rolls with an acceleration of 0.5 m/s2 for 10 seconds. How far does it travel during this time?
Answer:
the ball travels 0.85 miles per second
Explanation:
Answer:
0.85
Explanation:
A quantity that has magnitude & direction is called
Explanation:
VECTORS DEF: A vector is a quantity that has both magnitude and direction.
The atomic mass tells us how many______
and _______
an element has.
A. protons and electrons
B. protons and neutrons
C. electrons and neutrons
Answer:
A
The atomic mass tells us how many protons and electrons an atom has.
The answer is A.
There are two ways that an object can get in motion. What are they?You may use the following sentence frame:An object can get in motion by a ____ or a ____.
A student planted bean seeds in two cups and placed the cups on a sunny windowsill. One cup was given 10 mL of water and the other cup was given no water. What are two things that should be kept constant in this experiment?
Answer: The water and sun.
Please hit that brainlist button and hoped it helped you out.
During the power stroke energy released by combustion generates the force that:_______.
Explanation:
An IC engines means an Internal Combustion engine. Here, the combustion takes place in side a chamber or a cylinder internally, hence it is known as internal combustion engine.
Combustion is the process where oxygen reacts with the fuel and it burns to produce a large amount of force and heat. In each revolution of the crank, the engine creates a power stroke when the piston goes from the bottom dead center to the top dead center.
During each power stroke, the energy released forces the piston down and the crankshaft is rotated.
HEY CAN ANYONE HELP ME OUT IN DIS RQ!!!!!!
Answer:
40 laps
Explanation:
400/10
40
PLS MARK ME AS THE BRAINLIEST
A racing car can complete an 800 m long lap in 14 s. What is the speed of the
car?
Answer:
57.1 m/s
Explanation:
Speed = Distance/Time
Speed = 800/14
Speed = 57.1 m/s (3sf)
1. what is the displacement of the car between 0s and 24 s?
2. what is the distance of the car between 0s and 24s?
Answer:
1). Displacement = 24 m
2). Distance = 28 m
Explanation:
We will use the concept that distance is a scalar quantity and displacement is a vector quantity.
1). Displacement of the car between 0 s and 24 s
Displacement = distance between origin (0, 0) and a point on x - axis (24, 0)
= 24 - 0
= 24 meters
2). Distance traveled by the car = Distance traveled by the car on the ramp
= Distance traveled on the tracks (AB + BC + CD)
AB = [tex]\sqrt{6^2+8^2}[/tex]
= [tex]\sqrt{36+64}[/tex]
= [tex]\sqrt{100}[/tex]
= 10 m
BC = 16 - 8
= 8 m
CD = [tex]\sqrt{8^2+6^2}[/tex]
= 10 m
Therefore, distance traveled by the car = 10 + 8 + 10
= 28 m
Answer:
1). Displacement = -12 m
2). Distance = 12 m
Explanation:
WHO CAN ANSWER BOTH 14 and 15 WITH UNITS ILL PUT U AS BRAINLEST!
Answer:
14. V=8
15. V=40
Explanation:
simplifying:
14. 4 32/8
V=8
15. 20 1000/50
V=40
it is important to know the difference between atoms
Answer:
yes
hope this will help you
Which of the following did the doll experiment not suggest?
A. African Americans attributed more positive characteristics to the white dolls.
B. African Americans had feelings of inferiority because of school segregation.
C. African Americans preferred to play with the white dolls when given a choice.
D. African Americans felt more secure and positive because of school segregation.
Answer: I do believe the answer is D if not then sorry and let others know in the comment section
The doll experiment did not suggest the African Americans felt more secure and positive because of school segregation. The correct option is D.
What is school segregation?School segregation in the United States is the segregation of students based on their colors and caste. An institution can be predominantly owned by the black and only black students can study into it.
The Americans who are black belonged to the African continent. They felt more safety and secure by studying into this segregated school.
Thus, the correct option is D.
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