Answer:
....
Explanation:
Kiran's mother placed a candle in the bowl as shown and lit it . A little while later , kiran opened a bottle of pepsi and poured it quickly into the bowl .What will happen ?
Answer:
The candle stick flame will burn brighter.
Explanation:
I majored in Physics.
PLEASE HELP MEEEE
marking brainliest
Answer:
Option C
Explanation:
Centripetal acceleration formula regarding velocity and radius is,
[tex]a_c=\frac{v^2}{r}[/tex]
now we know the centripetal acceleration is 9 and the radius is 16 so we plug these values into our formula,
[tex]a_c=\frac{v^2}{r}\\\\9=\frac{v^2}{16} \\\\144=v^2\\\\\sqrt{144}=v \\\\v=12\ m/s[/tex]
so velocity is 12 m/s
Now for the angular velocity, the formula of centripetal acceleration regarding angular velocity and radius is,
[tex]a_c=rw^2[/tex]
we know the centripetal acceleration is 9 and the radius is 16 so plug these values into the formula,
[tex]a_c=rw^2\\\\9=16w^2\\\\0.5625=w^2\\\\\sqrt{0.5625}=w \\\\0.75\ rad/s=w\\[/tex]
so angular velocity is 0.75 rad/s
The volume of an irregular object can be measured by
a. multiplying the object’s length, width, and height.
b. multiplying the object’s density by its mass.
c. submerging the object in water in a graduated cylinder.
d. placing the object on a triple-beam balance.
What ocean features occur along areas of volcanic activity in the ocean floor and release high pressure, extremely hot water and chemicals?
Trenches
Mid-ocean ridges
Hydrothermal vents
Continental shelfs
Answer:
Hydrothermal vents
Explanation:
A hydrothermal vent is found along with areas of volcanic activity in the ocean floor which discharges geothermally heated water. Tectonic plates in such areas move apart at spreading centers and hotspots to form hydrothermal vent.
A hydrothermal vent ejects hot and often toxic, fluids and gases into the surrounding seawater when seawater meets magma.
Hence, the correct answer is "Hydrothermal vents".
An object is in free fall. After 10 seconds calculate the distance fallen? *
A diver jumps off a 60 m cliff with an initial horizontal velocity of 3m/s. Find the time needed to reach water?
Answer:
9.81 × 10 = 98.1 meters
vertical displacement is s=1/2 at^2 + vt
initial vertical velocity is 0 so s=1/2 at^2
a in this instance is gravitational acceleration so 60m= 1/2 (9.81)t^2
solve for t, t = 3.497s. //I corrected this answer as just now I misread horizontal as vertical.
*For free fall,
Initial velocity (u) = 0
g = 9.8m/s²
time(t) = 10s
Using the second equation of free fall;
s = ut + 1/2gt²
where 's' is the distance fallen.
s = 0(10) + 1/2(9.8)(10)²
s = 1/2(9.8)(100)
s = 490m.
*Initial horizontal velocity (Ux) = 3m/s
Initial vertical velocity (Uy) = 0
since it did not start with any vertical velocity.
Using the second equation of vertical downward motion:
h = Uyt + 1/2gt²
where h is the height of the cliff = 60m.
g = 9.8m/s²
60 = 0(t) = 1/2 (9.8)(t²)
60 = 4.9t²
t = √(60/4.9) = 3.5s.
When illuminated with monochromatic light, a double slit produces a pattern that is a combination of single-slit diffraction and double-slit interference. This can be easily seen if the separation between the slits and the size of slits are related by simple fractions. Find the ratio of the width of the slits to the separation between them, if the first minimum of the single slit pattern falls on the fifth maximum of the double slit pattern.
Answer:
The ratio is [tex]k:d = 1 : 5[/tex]
Explanation:
From the question we are told that
The first minimum of the single slit pattern falls on the fifth maximum of the double slit pattern.
Generally the condition for constructive interference for as single slit is
[tex]ksin(\theta) = n\lambda[/tex]
Here k is the width of the slit and n is the order of the fringe and for single slit n = 1 (cause we are considering the first maxima)
Generally the condition for constructive interference for as double slit is
[tex]dsin\theta = m\lambda[/tex]
Here d is the separation between the slit and m is the order of the fringe and for double slit m = 5 (cause we are considering the first maxima)
=> [tex]dsin\theta = 5\lambda[/tex]
So
[tex]\frac{ksin(\theta)}{dsin(\theta)} = \frac{\lambda}{5\lambda}[/tex]
=> [tex]\frac{k }{d} = \frac{1}{5}[/tex]
So
[tex]k:d = 1 : 5[/tex]
What happens to electrical energy that is used by objects in our homes? (1 point) a It is absorbed by batteries. b It is destroyed. c It is stored in solar panels. d It is transformed into other forms of energy.
Question:
What happens to electrical energy that is used by objects in our homes? (1 point)
a It is absorbed by batteries.
b It is destroyed.
c It is stored in solar panels.
d It is transformed into other forms of energy.
Answer:
D
d. It is transformed into other forms of energy.
When electrical energy is used by objects in our homes, it is transformed into other forms of energy depending on the specific device or appliance. For example:
In light bulbs, electrical energy is transformed into light energy and heat energy.In an electric heater, electrical energy is transformed into heat energy to warm the surroundings.In a blender, electrical energy is transformed into mechanical energy to blend food.In a fan, electrical energy is transformed into mechanical energy to create air movement.This transformation of electrical energy into other forms is governed by the principles of conservation of energy, which state that energy cannot be created or destroyed, only converted from one form to another. So, while electrical energy is consumed and "used up" by the devices in our homes, it is not destroyed but rather converted into different forms of energy that serve various purposes.
To learn more about electrical energy, here
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Activity that is equivalent to brisk walking in intensity is considered to be _______________ physical activity. *
vigorous
light
moderate
Answer:
moderate
Explanation:
because light would be walking casually while vigorous would be sprinting or something like that
A cyclist travels at 7 m/s and has a mass of 75 kg. Calculate the kinetic energy of the
cyclist.
3,675 )
262.5
1,837.5)
525 )
Answer:
1837.5 JExplanation:
The kinetic energy of an object can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2} \times 75 \times {7}^{2} \\ = 37.5 \times 49 \\ = 1837.5[/tex]
We have the final answer as
1837.5 JHope this helps you
What energy transformation is occurring in photosynthesis?
Chemical to Radiant
Radiant to Chemical
Mechanical to Nuclear
Nuclear to Chemical
Answer:
radiant to chemical
Explanation:
Truss me
Describe how could you use an electromagnete to sort a mixture of iron and copper pieces into two seprate piles of iron and copper
Answer:
Electromagnetic cranes are used to separate copper from iron in a scrap yard. The current is switched on to energies the electromagnet and pick up the iron pieces from the scrap. Then these iron pieces are moved to another position, the electromagnet in switched off and the iron pieces are released.
Explanation:
The ______________ is a very strong north westerly air current encircling the Earth causing the cold fronts to come down into the United States during the winter. *
10 points
sea breeze
land breeze
climate
weather
ocean current
conduction
Gulf Stream
Jet Stream
hurricane
wind*
Answer: it's wind
Explanation:
What is the chemical formula for sulfur trioxide? O SO3 O SIO3 8 O SO O SIO
Sulfur trioxide/Formula
SO3
this is what i looked up and got
1.) How much potential energy does an object with a mass of 3 kg have on top of a stand 12 meters
high have on earth with a gravitational acceleration of 9.8 m/s, assuming no air friction?
a.) 3.673 Joules
b.) 352.8 Joules
c.) 39.2 Joules
d.) 2.45 Joules
Answer:
352.8 JoulesExplanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 9.8 m/s²
From the question we have
PE = 3 × 9.8 × 12
We have the final answer as
352.8 JHope this helps you
You apply a 325 N force to a heavy crate with a rope that makes a 29.0° angle with the horizontal, if you pull the crate a distance of 5.37 m, how much work was done by you?
Answer:
W = 1526.43 J
Explanation:
Given that,
Force acting on a heavy crate, F = 325 N
The rope will make 29.0° angle with the horizontal
The distance covered by the crate, d = 5.37 m
We need to find the work done by the crate. The work done by an object is given by :
[tex]W=Fd\cos\theta\\\\=325 \times 5.37\times \cos29\\\\=1526.43\ J[/tex]
So, the required work done is 1526.43 J.
Does a soccer ball on the ground have energy
Answer:
No
Explanation:
The ball dose not have any kinetic energy or potential. Nothing is in motion or stored.
A bike is traveling at a speed of 15 m/s. The mass of the bike is 30 kg. What is the kinetic
energy of the bike?
Answer:
3375 JExplanation:
The kinetic energy of an object can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2} \times 30 \times {15}^{2} \\ = 15 \times {15}^{2} \\ = {15}^{3} \: \: \: \: \: \: \: \: \: \: [/tex]
We have the final answer as
3375 JHope this helps you
What is the name of a process when two parents is needed to create offspring
Btw I feel like I won't use Brainly anymore
Answer:
Sexual reproduction
Explanation:
Its what its called hope it helps
Answer:
i think its called allogamy
Explanation:
Levi decides to examine the effect of fertilizer on the growth of tomato plants. He chooses four plants for his experiment and applies varying amounts of fertilizer to the three of them. He does not apply fertilizer to one plant.
Over a 15-day period, the plants receive fertilizer on Days 1, 4, 7, 10, and 13. Levi measures the height of all of his plants with a meter stick on Days 3, 6, 9, 12, and 15. He also makes sure to hold all experimental factors constant except for the fertilizer.
Which statement describes what Levi did to prepare the control group in his experiment?
Levi applied different amounts of fertilizer to three of his plants.
Levi did not apply any fertilizer to one of his plants..
Levi held all experimental factors constant except for fertilizer., ,
Levi measured his plants on five separate days.
Answer:
Levi did not apply any fertilizer to one of his plants..
Explanation:
In an experiment, there are two major groups namely: control group and experimental group. Control group is the group in an experiment that does not receive the experimental treatment i.e. the group which the independent variable is not applied to.
In this case, Levi is trying to examine the effect of fertilizer on the growth of tomato plants where he used varying amounts of fertilizer on three of the four plants he used for the experiment. The fourth plant did not receive any amount of fertilizer, which is the independent variable (variable being manipulated or changed). This means that Levi prepared the control group in his experiment by NOT APPLYING ANY FERTILIZER TO ONE OF HIS PLANTS.
QUICKLY I AM IN THE LESSON NOWWW
So I need you to write a hypothesis about finding and marking stars on "Worldwidetelescope", I dont know how to start a hypothesis and a paragraph about what I did in this project. I know what I did but someone have to help me with the hypothesis and how to start the paragraph and please make a list of everything it should include, Thank you!!
Answer:
I don't really know much about the whole stars thing, but I've written a lot of paragraphs in science
Explanation:
Remember:
A paragraph should be in CER formation: Claim (hypothesis/discovery), Evidence, and ReasoningYour reasoning should never start with I believe or I think, your reasoning and evidence are 100% fact basedThe actual hypothesis should only be 1-2 sentences and be straight to the pointInclude:
for your hypothesis, keywords relating to your subject, I'm assuming for your topic you should include things like marking, telescope, stars, etc.why you believe your hypothesis is true so use prior knowledge to justify your hypothesiswhat mass of lead has the same volume as 1600 of alcohol ( density of lead =11300kg\m³ and density of alcohol=790kg\m³)
The mass of lead = 22,939 kg
Further explanationGiven
mass alcohol=1600 kg
The density of lead =11300kg\m³ and density of alcohol=790kg\m³
Required
mass of lead
Solution
volume of alcohol[tex]\tt V=\dfrac{mass}{\rho}\\\\V=\dfrac{1600}{790}\\\\V=2.03~m^3[/tex]
the volume of lead=volume of alcohol=2.03 m, so the mass of lead :
[tex]\tt m=\rho\times V\\\\m=11300\times 2.03\\\\m=22,939~kg[/tex]
Help? anyone? plz?
What was the atmosphere most heated by?
radiation
conduction
wind
convection
Answer:
Explanation:
The answer is radiation.
What is the unit for work? watt joule newton meter
Answer:
Joule
Explanation:
Joule is the SI unit of work or energy.
Answer:
joule
Explanation:
edge2020
Treatment for Common Sports Injuries
Practice
Active
b 21 (3
Explain why the first step in responding to any sports injury is to remove the danger that led to the injury
A chunk of ice with a mass of 1.2 kg melts and absorbs 3.33 x 10³J of energy. Which best describes what has happened in this system?
Answer:
- Its entropy increases.
Explanation:
Entropy is defined as a 'measure of the amount of energy in a physical system that cannot be used to do work.' It is also employed to denote randomness, disorder, or uncertainty of the arrangement/system. In the given system, the melting of ice denotes the 'increase in entropy' as the amount of energy unavailable to do work increases('absorbs 3.33 x 10³J of energy'). Thus, this signifies that the entropy increases with a rise in temperature as it allows the substance to have greater kinetic energy.
Explain how water waves are not purely transverse waves
Answer:
Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.
Explanation:
If you count one by one till 100 in 1 minute, how long does it take to count till 1 billion? Convert your answer to seconds, hours, years.
Answer:
Probably like around 30 - 35 years, 100-250 days and 7-14 hours
Explanation:
Describe binary fission with amoeba.
The number of particles outside the nucleus in the neutral atom will always equal to…?
Answer:
2,8,8
Explanation:
im not sure really what you asking but is it this the shells
Unlike acceleration and velocity, speed is NOT a quantity that accounts for..
a. distance
b. direction
c. time
d. movement
Answer:
B
Explanation:
direction is literally the only difference between speed and velocity
Taking into account the definition of speed and velocity, the correct answer is option b. Unlike acceleration and velocity, speed is NOT a quantity that accounts for direction.
SpeedSpeed refers to the distance an object travels in a given time and is a scalar quantity.
VelocityOn the other hand, velocity is a magnitude that expresses the relationship between the space traveled by an object, the time used for it and its direction. In other words, velocity refers to the interval of time it takes for an object to move towards a certain direction. Since velocity considers the direction in which an object moves, it is considered a vector character magnitude.
SummaryIn summary, speed does not take into account the direction of movement, while speed implies the change of position of an object in space within a certain amount of time, that is, speed plus the direction in which said movement is produced.
Correct answerFinally, the correct answer is option b. Unlike acceleration and velocity, speed is NOT a quantity that accounts for direction.
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