Explanation:
This is the formula for the change in distance (δx) of an object moving with constant acceleration (a) and initial velocity (v), one of the standard Equations of motion. To solve for t first rearrange
12at2+vt−δx=0
then apply the formula for solving a Quadratic equation if our equation is At2+Bt+C=0 then the solution is
t=−B±B2−4AC√2A,
here A=12a, B=v, C=−δx so plugging these in the formula gives
t=−v±✓v2−4(12a)(−δx)√2(12a) (Apply quandriatic equation)
simplifying
t=−v±v2+2aδx√a.
Note how there are two possible solutions one corresponding to the + and one to the -. Sometimes one of these will give a negative time, so you may want to eliminate that. Indeed if δx>0, v>0 and a>0 we only want the positive solution. In other cases you may want to consider both solutions, for instance if we thow a ball up in the air the initial velocity is positive and the acceleration is negative, it will pass a fixed height above your head twice, once on the way up and once on the way down.
Difference between plastic and rubber
Answer: hope it helps you....
If you place a paper clip very close to a magnet, the paper clip
A. is attracted to the magnet.
B. moves toward the magnet.
C. becomes a temporary magnet.
D. all of the above
How many calories does it take to raise the temperature of 500g of water by 3C?
Answer:
1500
Explanation:
because it takes 1 calorie to raise one gram of water to one degree Celsius.
Do you think radio waves and x-rays are types of light?
Answer:
yes, radio waves and x-rays are type of light.
Who ever gets it right I will give 20 points and Brainly
Answer:
the reflection of the candle in the concave mirror formed upside down real image that is diminished
What colour is the live wire in modern electric cable?
Frequency = 458 Hz
Wavelength = 0.74 m
What is the velocity of the wave?
The velocity of the wave having a frequency of 458 Hz and a wavelength of 0.74 m is 338.92 m/s
Velocity of a waveThe velocity of a wave is related to its frequency and wavelength according to the following equation:
Velocity (v) = wavelength (λ) × frequency (f)
v = λf
How to determine the velocity of the waveFrequency (f) = 458 HzWavelength (λ) = 0.74 mVelocity (v) =?v = λf
v = 0.74 × 458
v = 338.92 m/s
Thus, the velocity of the wave is 338.92 m/s
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1) Would the 2 cars repel or be attracted to each other?
2) What type of force is being exerted between the 2 magnets?
1. The 2 cars will repel because both are S. Note: like poles repel
2. Magnetic force is being exerted between the 2 magnets
What forms of energy in a penny battery are considered kinetic?
Answer:
In energy terms, electrical potential energy in the battery is converted into kinetic energy of moving electrons.
Explanation:
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Explanation:
They are usually found in mid ocean Means arrow heads should be opposite facing to each other by which plates can form ocean.African and south American plate is correct
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The normal force of the ground on the skater depends on the skater's weight.
What is normal force?
This is the upward force on an object usually exerted by the ground due to the weight of the object acting downwards.
Vertical force on the skaterThe net vertical force on the skater is zero.
W - Fₙ = 0
W = Fₙ
where;
W is the weight of the skaterFₙ is the normal force of the skaterThe normal force of the skater is equal to the weight of the skater acting downwards.
Thus, the normal force of the ground on the skater depends on the skater's weight.
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What is the free-fall acceleration at its surface, in terms of the free-fall acceleration g at the surface of the earth?.
A plane mirror forms a virtual image. give reasons
Answer:
1. The reason why a plane mirror forms a virtual image is because it doesn't let the light go through it, but it reflects the light, so if you go behind the plane mirror, then you won't see the rays of light since it's not letting the rays of light go behind it.
2. The image cannot be projected onto a screen also.
3. Also, the Rays of light never meet at a focus point, so hence, this is why the plane mirror forms a virtual image.
Thanks!
Answer:
becaise the light does not actually pass through the image
What is probability of picking an orange marble and flipping a heads?
25%
40%
15%
30%
Answer:
15%
Explanation:
Predict what would happen to the volume of a gas if the pressure on that gas were doubled
and then the absolute temperature of the gas was doubled
[tex]\tt \dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\\V_2=\dfrac{P_1V_1T_2}{P_2T_1}=\dfrac{P_1V_12T_1}{2P_1T_1}=V_1[/tex]
A tea kettle is boiling on the stove, and all of a sudden the whistle in the spout of the kettle starts shrieking. Steam rising from the boiling water causes the whistle to sound. What part of the water cycle does the steam represent
Answer:
Condensation is your answer
Explanation:
Condensation is the process of steam rising back into the atmosphere and the steam would be the evaporation "steam" hope this helped
Steam rising from the boiling water causes the whistle sound, which means that the convection part of the water cycle is present here.
What is convection?The process of convection entails the movement of a heated fluid, such as air or water, in order to transfer heat.
Convection is caused by the fact that most fluids have a tendency to expand when heated, which causes them to become less dense and rise due to the increased buoyancy. The homogeneous heating of air in a heated room or water in a kettle is due to circulation generated by this effect: heated particles expand the area they move in by moving faster against each other, rise, and afterwards cool and close again, increasing density and causing a corresponding sinking.
In forced convection, fluid is carried using mechanisms other than those that result from differences in density with temperature. Examples of forced convection include the air movement by a fan or water by a pump.
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Answer:
pacific and Australian
Explanation:
a covergent boundary is when to plates move towards eachother and the arrows show that the arrows are facing each other
Answer:
Pacific and Australian
Explanation:
Convergent boundaries are where two plates come together. Either tall mountains are formed on land or deep trenches in the ocean. There are deep ocean trenches where the Pacific and Australian plate converge.
What does it mean if electric field lines are close together versus farther apart ?
Answer:
As a result, if the field lines are close together (that is, the field line density is greater), this indicates that the magnitude of the field is large at that point. If the field lines are far apart at the cross-section, this indicates the magnitude of the field is small. (Figure) shows the idea.
Explanation:
Telescope A had an aperture of 15 cm while telescope B that of 5cm how many times of light gathering power does telescope A have compared with telescope B
Answer:
Light gathering power is related to the area of the lens aperature:
Aa / Ab = (15 / 5)^2 = 9 since the area of an aperature is proportional to the square of the radius
what will be the final velocity of a vehicle, if it started from rest and accelerates at 4m/s² after 5 seconds?
Answer:
v = 20 m/s
Explanation:
Let's use v = u + at for uniform acceleration.
v = finaly velocity
u = initial velocity
a = acceleration
t = time
Since we start from rest, our initial velocity is zero.
[tex]v = 0 + 4(5)[/tex]
[tex]v = 20 m/s[/tex]
Does anyone know this?
Why is light referred to as an electromagnetic wave.
they have oscillating electric and magnetic fields
Which direction does heat flow from?
hot to cold
cold to hot
hot to hot
cold to cold
Answer:
A.) Hot to cold.
Explanation:
I took the quiz on Edge, 2022.
(See the attachment below.)
Hope this helped! <3
Based on scientific information, the direction that heat generally flow from is: A. hot to cold.
What is heat?Heat is also known as thermal energy and it refers to a form of energy that is only transferred from an object to another due to a difference in temperature.
During the process of heat conduction, heat would only be transferred between objects that are having different levels of temperature and objects that are directly in contact with one another.
In conclusion, heat is generally transferred from a hot object to a cold object as a result of their varying temperature.
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Which of the following materials is attracted to a magnet?
A. aluminum
B. copper
C. glass
D. steel
Answer:
A. aluminum
Explanation:
because it's metal
Answer:
D or A
Explanation:
WHEN YOU PLACE A MAGNET CLOSE TO AN IRON MATERIAL IT INSTANTLY COMES TO IT
calculate the kinetic energy of a ball of mass 50g travelling of 30m/s how much work will need to be done to stop the ball
kinetic energy of the ball of mass 50 g and velocity of 300m/s is 22.5 J. The work done need to stop the ball is equivalent to its kinetic energy. Thus, 22.5 J of work done is needed.
What is kinetic energy?The kinetic energy of an object is the energy generated by virtue of its motion. It is related to its mass and velocity by the expression written below:
Ke = 1/2 m v²
Thus, kinetic energy increases with mas and velocity.
Given that, mass of the ball = 50 g = 0.05 kg
velocity of the ball = 30 m/s
then Ke = 1/2 × 0.05 kg × 30 m/s × 30 m/s = 22.5 J.
The energy of the body when it is moving is in the form of kinetic energy. This energy of the body is equivalent to the work done on the body to stope it. Therefore, work done on the ball needed to stop it is 22.5 J.
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5. Calculate the speed of Charlie who runs to the store 5 kilometers away in 40
minutes
(I NEED THIS ANSWERED NOW PLEASE)
Zeros that follow non-zero numbers and are also to the right of a decimal point are ________ significant.
fill in the blank please.
Answer:
Zeros that follow non-zero numbers and are also to the right of a decimal point are significant.
Explanation:
For example:
0.300 has 3 significant figures.
5.400 has 4 significant figures.
How does heat flow from one object to the other?
Answer:
Conduction, convection or radiation
Explanation:
Hope I could help. If you need more detail about one type, then coment below
Here is your Answer:-
Heat flow relies heavily on the concept of conduction. Basically, the transfer of the heat energy relies on free electron diffusion. In order for the heat to move from one object or material to another, adjacent atoms vibrate against each other. This is caused by the electrons moving from one atom to another.
Sara was walking from her car to the beach. To do this she travelled 314.9 m [N] and another 604.9 m [26.7° W of N]. The total displacement in the north direction that Sara travelled is ______m [N]. Record your answer to 1 decimal place.
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[tex][Hello,BrainlyUser][/tex]
Answer:
False
Explanation:
Some places are more endowed than others.For example, some regions have lots of water (ocean and seas). While others have lots of minerals and forestlands. In addition, other have metallic rocks, wildlife, fossil fuels, and so on. Thus, we can conclude that Natural resources are not evenly distributes across the world.
[CloudBreeze]
Natural resources are evenly distributed across the world
O True
O False ✓
Natural resources are unevenly distributed throughout the earth crust. Somewhere the amount of a particular source is plentiful whereas the other side , it's lacking , hence,the distribution isn't even