Answer:
there is no momentum
Explanation:
In the reaction 2Ca + O2 → 2CaO for every 2 Ca you will need how much O2?
a.
1
b.
2
c.
3
d.
4
Answer:
1
Explanation: that is the ratio
Where can Microsoft users browse forums by topic, search existing questions and answers, or ask their own questions?
Group of answer choices.
A. Community and Forum Resources.
B. Get Live Help.
C. Tech Specs.
D. Top Support Issues.
Answer:
A. Community and Forum Resources.
Explanation:
Microsoft is a multinational corporation that designs and develops various types of software applications or programs such as Microsoft operating system (OS), Microsoft Word, Microsoft Excel, Microsoft Access, Microsoft PowerPoint, etc., to avail end users the ability to perform different tasks on their computers.
Whenever these users encounter a problem with any of these software applications or programs, they can easily go to the official forums and communities to get help from professionals and other end users who may have experienced such problems in the past. These community and forums are typically interactive in nature and as such serves its purpose often times.
Hence, Microsoft users can browse forums by topic, search existing questions and answers, or ask their own questions on Community and Forum Resources.
3. Atoms with the same number of protons and electrons are neutral, and their charges add up to
a) zero
b) one
c) ten
Answer:
a) zero.
Explanation:
If the charge of an atom is neutral, then that means it has neither a negative charge nor a positive charge. So, it would have a charge of 0.
Hope this helps!
Why does the North star not move but the other stars move
Answer:
it's the star in the center of the star field
Explanation:
Why Doesn't Polaris Move? Polaris is very distant from Earth, and located in a position very near Earth's north celestial pole. ... Polaris is the star in the center of the star field; it shows essentially no movement. Earth's axis points almost directly to Polaris, so this star is observed to show the least movement
How does the intensity of a sound wave change if the distance from the source increases by a factor of 2?
If the distance from the source is doubled or increased by a factor of 2, then the intensity is quartered decreased by a factor of 4.
What is the intensity of sound wave?A sound wave's intensity is inversely related to density and speed and proportionate to the change in pressure squared.
The region that the sound waves cover grows as one gets farther from the source of the sound. The intensity and loudness of the sound are reduced because the same quantity of energy is dispersed over a larger region.
Inversely proportional to the square of the source's distance, the intensity varies.
Therefore, if the distance from the source is doubled or multiplied by a factor of 2, the intensity is reduced by a factor of 4 and then by a fourth.
When a time difference is twice, intensity is reduced by a factor of 4 each time.
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1. Which is an advantage of coal energy?
Need help, please! : )
Explanation:
Given
force (F) = 75 N
Acceleration (a) = 5 m/s²
Mass (m) = ?
We know
F = m * a
75 = m * 5
m = 75 / 5
m = 15 kg
The mass of the shopping cart is 15 kg.
Hope it will help :)
Milltown is 15ºC (59ºF) in the spring. What is the source for most of the energy that causes this temperature?
Answer:
The sun
Explanation:
The sun
The source for most of the energy that causes this temperature in Milltown with temperature 15ºC (59ºF) is the sun.
The Sun which is a star at the center of the Solar System carried some great amount of energy which is radiating the energy mainly as visible light, ultraviolet light, and infrared radiation.
Therefore, sun is responsible for temperature in Milltown with temperature 15ºC .
Learn more about sun at;
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A ball with a mass of 2.31 kilograms is rolling down a hill. What is the weight of the
ball? Write your calculation with units for all quantities. PLEASE HELP T-T
Answer:
cities grow all around
making bunches of funny sounds
Explanation:
Explain the challenges in developing an accurate rating system for earthquakes. What kinds of variables are there?
Answer:
In turn, the main factors affecting earthquake shaking intensity are earthquake depth, proximity to the fault, the underlying soil, and building characteristics—particularly height. Let's take a look at the latter two (soil and buildings) and how they interact.
The challenge in developing an accurate rating system for earthquakes is due to complicated relationship between variables such as magnitude and intensity of earthquake.
Earthquakes are associated with magnitude and intensity.
The challenge in developing an accurate rating system for earthquake is due to complicated relationship and dependency between the magnitude and intensity of the earthquake.
Intensity of earthquake is the observed effects resulting from the earthquake such as; shaking of buildings, people etc. This intensity of the earthquake depends on the location of the observer with respect to earthquake epicenter.The magnitude of the earthquake relates to the amount of energy released during the earthquake.Thus, the challenge in developing an accurate rating system for earthquakes is due to complicated relationship between variables such as magnitude and intensity of earthquake.
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An empty container has a mass of 3 g. When it is filled with 5 cm3 of a liquid,
the total mass of container and liquid is 7 g. What is the density of the liquid, in g/cm3?
Answer:
THE MASS OF THE LIQUID IS 22.5 g
Explanation:
Density = 0.180 g/cm3
Side length = 5 cm
Mass = unknown
To calculate the mass of the liquid, we use the formula:
Mass = density * volume
Volume of a cube or cuboid container = l^3
Volume = 5 ^3 = 125 cm3
So therefore, the mass of the liquid is:
Mass = 0.180 * 125
Mass = 22.5 g
In conclusion, the mass of the liquid in the container is 22.5 g
A person is standing on the edge of a merry-go-round that has a radius of 2.0m is travelling at 5m/s. How long does it take for them to complete one lap?
Answer:2.51 s
Explanation:
Given
The radius of merry-go-round r=2 m
Speed of person at edge v=5 m/s
The person is in a uniform circular motion with constant velocity
time taken to complete one lap is
[tex]t=\frac{\text{distance}}{\text{speed}}=\frac{2\pi \cdot 2}{5}\\\\t=\frac{12.568}{5}=2.5136\ s[/tex]
Please write in complete sentences.
How does density affect refraction?
Diamonds are a very dense material. Predict what would happen to the light ray if you projected it from the air through a diamond.
Answer:
The density of a material affects the speed that a wave will be transmitted through it. In general, the denser the transparent material, the more slowly light travels through it.
Moving a spring toy up and down will create what kind of disturbance?
parallel to the wave motion
in a circular motion
in the same direction as the wave motion
perpedicular to the wave motion
Answer:
Perpindicular to the wave motion.
Explanation:
Moving a spring toy up and down will create a disturbance in the same direction as the wave motion.
We can classify waves by the direction of wave motion in which case waves are classified into;
Transverse wavesLongitudinal wavesLongitudinal waves are waves in which the direction of disturbance is in the same direction as the wave motion. The wave along a spring is a longitudinal wave therefore; moving a spring toy up and down will create a disturbance in the same direction as the wave motion.
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What is the size of the force acting on a copper wire with a magnetic flux density of 3.6 x 10 2 T acting at
right angles to the wire of length 19 m and current of 0.043 A? Round your answer to 2 significant
figures.
Answer:
2900 N
Explanation:
We are given;
Magnetic flux density; B = 3.6 × 10² T
Length of wire; L = 19 m
Current; I = 0.043 A
Formula for force in this regards is;
F = BIL
Where;
B is Magnetic flux density
I is current
L is length
Thus;
F = 3.6 × 10² × 0.043 × 19
F = 2941.2
To 2 significant figures gives;
F = 2900 N
14. Which moon has more of an elliptical orbit? Why?
Earth's moon (.0549)
or
Neptune's largest moon Triton (.000016)
Answer:
Triton orbits Neptune in what is known as a retrograde orbit. This means that it orbits Neptune a direction opposite the planet's rotation. ... Others think that Triton may have been formed elsewhere and then captured by Neptune's gravity.
Explanation:
i hope it's help......
A 2.0-kilogram mass is moving with a speed of 3.0 m/s. What is the kinetic energy of the mass?
Answer: 9 Joules
Explanation:
Kinetic enegry is one half the mass multiplied by the velocity squared
KE = 1/2mv^2
[tex]KE=1/2(2)(3^2)\\KE=3^2\\KE=9J[/tex]
The kinetic energy of the body is 9J
What is kinetic energy?Kinetic energy is the energy possessed by a body due to its motion.
It is claculated by formula,
K.E = [tex]\frac{1}{2}mv^{2}[/tex]
Here,
The mass of the body = 2.0kg
speed = 3.0m/s
So kinetic energy K.E = [tex]\frac{1}{2}mv^{2}[/tex]
K.E = [tex]\frac{1}{2} (2)3^{2}[/tex] = 9J
So the kinetic energy of the body is 9J
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Imagine you live next-door to your best friend. Your bedroom windows face each other, and you want to set up a way to communicate privately using waves. You have these supplies:
a long string
a spring toy long enough to stretch between your windows
metal cans
a Morse code alphabet decoder (Morse code is a system that represents letters of the alphabet with dots and dashes) imagine you live next-door to your best friend
Answer:
A morse code alphabet decoder maybe?? I am confused
Explanation:
Answer:
J3rk it in the window ;-)
Explanation:
True or False: There is the same amount of water on earth today as there was when earth was formed.
Answer:
Yes the water amounts are the same.
Explanation:
Discuss a time when you made an impulsive decision. What was the decision? Why did you make your decision
impulsively? What were the consequences of the decision? If you had the decision to make all over again, how would you
change your decision?
How is sleet different from hail?
Answer:
Hail occurs in warm weather, while sleet occurs during cold weather. When the temperature falls below 32 degrees, precipitation falls out of a cloud as snow. ... Unlike hail, sleet is tiny in size and falls only once from the sky.
Explanation:
Hopefully its right :)
A microwave oven has 1200 W. If it receives 120 V of potential difference, what is the current in the microwave?
Answer:
10amps
Explanation:
Given data
Power =1200W
Voltage =120V
Required
The current I
From
P=IV
I= P/V
Substitute
I=1200/120
I= 10amps
Hence the current is 10amps
If the force of gravity was suddenly removed between the earth and sun, how would Earth move?
Group of answer choices
The sun would fly off into space.
The Earth would fly off into space in a straight line.
The Earth would fly off into space in a curved path.
The Earth would fall into the sun.
Answer:
the earthe would fly off into space in a straight line
what is the kinetic energy of an object with a mass of 80 kg and velocity of 12 m/s east?
Answer:
KE = 1296 J
Explanation:
how much work is done to move a 25 kg Mass 8 meters
Answer:
So, the power done is 196 watts.
Explanation:
Hello!
I need your help
I have a friend who is in 5th grade, she doesn't know what force and motion is I wanna make her like a help page?
Can someone help me put stuff into the sheet?
Answer:
Explanation:
Force = something being pulled or pushed
Motion = what the object is doing, most likely moving
i think thats right
PLS HELP WTH THIS FOR BRAINLIEST
Answer:
1. Pioneer
2. Primary
Explanation:
Pioneer Species are the first organisms to colonize barren environments.
Primary Succession is the development of an ecosystem of a barren environments!
I hope this helped! :)
Answer:
The first answer is Pioneer and I think the second is Primary
Explanation:
i need helppppppppppp :>
(can you make this five sentences or less
Answer:
The force of the bat is pushing harder than the ball. When there are unbalanced forces, one will move less or more than the other. Balanced forces stay the same force, that's why they're call "balanced" forces. so in this example, the bat has a stronger force than the ball, which causes the ball to have a greater reaction
If 10 crests and 10 troughs pass through a point in 5 seconds. Calculate its time period and frequency?
Answer:
frequency = 5 /s
period = 0.5 s/
Explanation:
number of revolution = 10+10/2 = 20/2 = 10
frequency = n/t = 10/5 = 5 /s
period = t/n = 5/10 = 0.5s
What moon phase is shown in the picture ?
the answer is waxing gibbous moon
Explanation:
.