Answer:
It gets higher :)
Explanation:
Answer:
higher
Explanation:
Children should be able to speak clearly and understandably by:
One year old.
Two years old.
Three to four years old.
Four to five years old.
After five.
Answer:
3 to 4
Explanation:
By the time they reach 3 they have achieved speaking 200 or even more
Properties of
alpha particles
Beta particles
Gamma particles
A ball of mass 200 g rolls along the ground at a speed of 5.2 m/s. Calculate the kinetic energy of the ball. Give your answer to one decimal place.
The formula for kinetic energy is 1/2 mv2. The kinetic energy is 0.40 m/s2.
What is Kinetic energy?
Kinetic energy, which can be seen in the movement of an object or subatomic particle, is the energy of motion. Kinetic energy is present in every particle and moving object.
Examples of kinetic energy in action include a person walking, a baseball soaring through the air, a piece of food falling from a table, and a charged particle in an electric field. An object has no kinetic energy if it is not moving.
Potential energy is present in stationary objects (the other main type of energy). When an object is propelled into motion by a force like gravity, its potential energy is transformed into kinetic energy.
Therefore, The formula for kinetic energy is 1/2 mv2. The kinetic energy is 0.40 m/s2.
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How is power calculates
Answer:
Explanation:
Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s). Power may be measured in a unit called the horsepower.
What is its displacement ?
Answer:
d
Explanation:
What is the momentum of a 10 kg object traveling at 4 m/s?
A 40 kg girl is pushing a 40 kg boy in a 20 kg toy wagon. The wagon is moving at a constant speed of 2.0 m/s. Calculate the combined kinetic energy of the boyWhat is the acceleration of a 50 kg object pushed with a force of 500 newtons?
Answer:
Combined kinetic energy =120 joules
Acceleration= [tex]10 m/s^2[/tex]
Explanation:
Given that the mass of the girl= 40 kg.
The mass of the boy= 40 kg.
The mass of the wagon = 20 kg.
The combined velocity of the boy and the wagon, v= 2.0 m/s.
The kinetic energy of any object having mass m and moving with the speed of v m/s, is
K.E.= [tex]\frac 1 2 mv^2[/tex].
Here, the combined mass of the boy and the wagon = 40 + 20 = 60 kg.
So, the combined kinetic energy of the boy and the wagon
[tex]=\frac 12 60 \times 2^2= 120[/tex] J
When a force is applied on the object having the mass m, then
F=ma,
where a is the acceleration produced in the object.
Here, F=500 newtons and m= 50 kg.
so, [tex]500=50\times a[/tex]
[tex]\Rightarrow a = 500/50=10 m/s^2[/tex].
Hence, the combined energy is 120 joules and the acceleration is 10 [tex]m/s^2[/tex].
The table below shows the height of some horse fossils.
Horse Fossil RecordHorse Fossil Height (cm)
W 52
X 135
Y 38
Z 100
Ancient horses were much smaller than present-day horses. The present-day horse is 140 centimeters tall. What is the correct order of evolution of the horse starting from the oldest fossil?
X Z W Y
Y W Z X
W Y X Z
Z X W Y
Answer:
Y W Z X, B
Explanation:
It wants you to figure out the correct order starting from oldest to newest.
Answer:
Y W Z X, B
Explanation:
I took the FLVS test :)
wut happens to energy wen it is used
Answer:it gets converted to light energy
Explanation:hope this helps
Calculate the mass of ice that requires 240000 J to change its state to water ? Water Latent Heat of fusion 2.66 x 10 +^5 (10 raised to the power of 5 )
Answer:
Explanation: 1.108
In a circuit, what should the wire be crafted from?
A. An insulator, such as plastic
B. An insulator, such as rubber
C. An insulator, such as glass
D. An conductor, such as copper
Answer:
D. An conductor, such as copper
Explanation:Circuits work by transfering energy, and only a conductor can do that.
In a circuit, the wire should be crafted from An conductor, such as copper. Therefore correct option is D.
What is Wire?
Electric wire is a metal in the form of thin thread. this is responsible for the flow of electrons in it therefore it must be conducting. Wires are generally made up of copper, aluminum, gold and iron.
wire is made up of conducting metal tread and it is insulated by plastic or rubber to avoid shock.
when we look at the electric wire, it is made up of fine treads of conducting metal to make it more flexible and to increase surface area of the wire(as current flows on the surface of the wire).
An insulator wire can not pass current through it. therefore wire can not be made from insulator. Hence all first 3 options are wrong.
Hence option D is correct as copper is a good conductor.
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What is a living thing?
The answer to the question is an orgamisn
Answer:
The thing having life are called living things
The picture shows an aerialist walking on a tightrope and holding a balancing bar.
An action-reaction pair of forces exists between-
A. the aerialist's arms and legs
B. the rope and the balancing bar
C. the aerialist's feet and the rope
D. the aerialist's body and shoes.
An action reaction pair of forces exists between : ( A ) The aerialist arms and legs
Action-reaction pair of forcesAction-reaction pair of force comprises of the force that acts on the object as a action force and the force experiened by the object due to newton third law of motion as the reaction force. Therefore in the diagram an action reaction pair of forces can be experienced between the aerialist arms and legs
Hence we can conclude that An action reaction pair of forces exists between : ( A ) The aerialist arms and legs.
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Si se sumerge un cuerpo cuya densidad es 3kg/m3 en un lugar líquido cuya densidad es de 25kg/m3 en cuerpo... Flota en equilibrio a dos aguas?O se hunde? O flota
Answer:
Flota.
Explanation:
Cuando sumergimos un objeto en un fluido, si la densidad del objeto es menor a la densidad del fluido, entonces el objeto flotara.
Si la densidad del objeto es exactamente igual que la densidad del fluido, entonces se dice que el objeto flota a dos aguas.
De tal forma que la flotación en si estará definida por el volumen del objeto, pues el peso del fluido desplazado sera igual al peso del objeto.
En este caso tenemos:
La densidad del objeto es 3kg/m^3
La densidad del liquido es 25kg/m^3
Entonces la densidad del liquido es mucho mayor que la densidad del objeto, de esto podemos concluir que el objeto no flota a dos aguas, solamente flota.
Mary slams her breaks and the coffee cup sitting in the dashboard spill everywhere, what Newton law of motion explains why the coffee cup spilled.
Answer:
inertia
Explanation:
a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
aka
it goes on because nothing is resisting it, in this case however, the car is there to stop it, and the result is spilled coffee (rip)
PLEASE HELP. I'LL GIVE BRAINLIEST TO CORRECT ANSWER.
There are several ways to model a compound. One type of model is shown.
4 C's are connected in a line by 3 black lines. The C on the left has 3 H's attached to it each by a black line. The next C has 1 H attached by a black line and 1 O attached by 2 black lines. The next C has 2 H's attached to it by 1 black line each. The last C has 2 H's attached to it by 1 black line each and 1 O attached by a single black line. That O has an H attached to it by 1 black line.
What is the chemical formula for the molecule represented by the model?
CHO
C4H9O2
C4H8O
C3H8O2
Answer:
C
Explanation:
Edge2020
What 3 things use electromagnetic energy in nature?
Ummmm ya girl needs help
hydrogen: 4
nitrogen: 4
oxygen: 12
this should be correct
need help asap please and thank you
Does light slow down or speed up when it passes from the air into the cornea? How do you know this?
n the lab, you performed a trial where the fan was turned off partway through the run. What did the graph for this trial look like? How does the slope of the graph change, and why?
Answer:
Sample Response: The first part of the graph is a straight diagonal line and the second part of the graph is a straight horizontal line. The slope of the first part of the graph is positive, indicating that the cart increased in speed, and was therefore accelerating for the first four seconds. After the fourth second, the slope of the line is zero, indicating that the cart moved at a constant speed and did not accelerate any more because the fan was turned off.
Explanation:
active listening definition
Answer:
Active listening is a technique that is used in counseling, training, and solving disputes or conflicts. It requires that the listener fully concentrate, understand, respond and then remember what is being said. This is opposed to other listening techniques like reflective listening and empathic listening.
Explanation:
Henry mixed salt and water together in a cup until he observed a clear solution. He measured the mass of the solution. Then he placed the cup outside for several sunny days during the summer. After a week, he observed that only solid salt remained in the cup and the mass had decreased. Henry concluded that a physical and chemical change occurred in this investigation.
Which statements correctly defend or dispute his conclusion?
A- He is correct. Dissolving salt in water is a physical change, but evaporating the water is a chemical change. Formation of a solid is evidence that a chemical change occurred.
B- He is correct. Evaporation is a physical change, but dissolving salt in water is a chemical change. The change in mass is evidence that a chemical change occurred.
C- He is incorrect. Dissolving salt in water and evaporation of the water are both physical changes. The reappearance of salt is evidence that the change was reversible by a physical change, so it could not be a chemical change.
D- He is incorrect. Dissolving salt in water and evaporation of the water are both chemical changes. The reappearance of salt is evidence that the change was reversible by a chemical change, so it could not be a physical change.
Answer:
B- He is correct. Evaporation is a physical change, but dissolving salt in water is a chemical change. The change in mass is evidence that a chemical change occurred.
Explanation: Dissolving Salt in water is a Chemical Change, Because the Salt arrangement is different in solid state than dissolved in water. As we can see in the image below, once the Salt is dissolved, it is separated into its ions, Na+ and Cl- Now, The evaporation process is a physical change, because the water doesn´t change its configuration H20 and it only changes its form, as we can see in the image below.
Answer:
B) He is correct. Evaporation is a physical change, but dissolving salt in water is a chemical change. The change in mass is evidence that a chemical change occurred.
Explanation:
hope this helps!! :)
What is the velocity of a 0.06
kg ball moving with 75 J of energy?
Answer:
The ball moves at 50 m/s
Explanation:
Kinetic Energy
Is the energy that it possesses an object of mass m due to its motion at speed v. The kinetic energy is calculated as follows:
[tex]\displaystyle K=\frac{1}{2}m\cdot v^2[/tex]
If we know the value of the kinetic energy and need to calculate the speed, we can solve it for v:
[tex]\displaystyle v=\sqrt{\frac{2K}{m}}[/tex]
Since the ball has a mass of m=0.06 kg and moves with a kinetic energy of K=75 Joule:
[tex]\displaystyle v=\sqrt{\frac{2\cdot 75}{0.06}}[/tex]
[tex]\displaystyle v=\sqrt{\frac{150}{0.06}}[/tex]
[tex]\displaystyle v=\sqrt{2500}[/tex]
v=50 m/s
The ball moves at 50 m/s
Answer:50m/s
Explanation:divide
WILL GIVE BRAINLIEST!! Mary and carl drove to the store to shop. Their trip to the store, time at the store, and trip home is graphed here. What was their average speed for the entire trip?
Answer:
30 km per hour
Explanation:
Answer:
30km/h
Explanation:
test test test
What’s the kinetic energy of the object? Use .
Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot’s kinetic energy is
joules.
Answer:
18joules
Explanation:
1/2 of 4=2
2 multiply by 9= 18 joules
Which would show an example of how physical changes are reversible?
cutting a gold bar in two pieces and then putting the pieces next to each other
burning a match and then relighting it
melting tin and then cooling it into a mold
combining sodium and chlorine to make the new material of table salt
Answer:
Melting tin and then cooling it into a mold
Explanation:
When you melt something, and when it cools it returns to its physical state, therefore the physical changes are reversible. For example, take chocolate. When chocolate melts its liquid, then when it's in a colder situation it becomes solid again and so on, the changes are reversible.
Answer:
C
Explanation:
the physical change was the gold bar being cut and if it is put back together the physical change is reversed
A car is sitting motionless on top of a bridge. The bridge pushes up on the car with a force of 782 Newtons.
What force must gravity pull down on the car with in order to break the bridge? Explain how you determined your answer.
Answer: The car would move to the right with 150 n of force. the 150 n of force from friction and air resistance slows the car from moving to the right with 300 n of force.
Explanation:
A 38.5kg man is in an elevator accelerating downward. A normal force of 343n pushes up on him. what is his acceleration?
Answer:
The answer is 8.91 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{343}{38.5} = \frac{98}{11} \\ = 8.909090...[/tex]
We have the final answer as
8.91 m/s²Hope this helps you
A 5.00 kg crate is on a 21.0 hill. Using X-Y axes tilted down the plane, what is the x component of the weight?
Answer:
17.56N
Explanation:
Wx=mgsin(21)=5*9.8*sin21=17.56N
