Answer
lol
Explanation:
BRAINLIEST/BRAINLIEST/ Please help
1.What would happen to the pressure inside any enclosures on the moon as the sun hits the exterior and the temperature begins to rise? What kind of safety features could be built in to accommodate this?
2.How would you go about storing the "extra" oxygen and air that would continuously provide "fresh air" to the astronauts?
3. What would you do with the CO2 (exhaled from people) that needed to be removed from the air in the enclosures? Remember, it's very cold outside the enclosures on the moon.
Answer:
1. the pressure inside any enclosures on the moon as the sun hits the exterior and the temperature begins to rise is going to increase, you could use an air pump to lower the pressure in the room.
2. you could put them in jars, I once saw people selling Jarred air supposedly from Honolulu, Hawaii, but they didn't seem to do that well for some reason XD. or if you are staying long term in space, you could bring a couple of plants and plant them if you want, that what NASA did.
3. you could try removing the carbon dioxide with canisters that contain powdered lithium hydroxide. When air containing carbon dioxide gets passed through the canister, it combines with the lithium hydroxide to form lithium carbonate and water. you could dump the lithium carbonate and water into space and make space trash if you don't want them taking up too much space, water will probably freeze or something if you launch it into space due to the temperature out there.
Explanation:
can I have brainiest pls? this took me like half an hour
1. the pressure inside any enclosures on the moon as the sun hits the exterior and the temperature begins to rise is going to increase, you could use an air pump to lower the pressure in the room.
What is pressure ?The perpendicular force per unit area, or the stress at a point within a confined fluid.
2. you could put them in jars, I once saw people selling Jarred air supposedly from Honolulu, Hawaii, but they didn't seem to do that well for some reason XD. or if you are staying long term in space, you could bring a couple of plants and plant them if you want, that what NASA did.
3. you could try removing the carbon dioxide with canisters that contain powdered lithium hydroxide. When air containing carbon dioxide gets passed through the canister, it combines with the lithium hydroxide to form lithium carbonate and water. you could dump the lithium carbonate and water into space and make space trash if you don't want them taking up too much space, water will probably freeze or something if you launch it into space due to the temperature out there.
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Answered: A metal ball is placed in a device with a spring that has been compressed past it’s equilibrium point so that when the spring is released, it will propel the ball into the air. The device is set up on a table one meter above the floor. Which components make up the initial energy of the system?
A. Gravitational potential energy only.
B. Kinetic energy, spring potential energy, and gravitational potential energy.
C. ANSWER: Spring potential energy and gravitational potential energy.
D. Spring potential energy and kinetic energy.
Explanation: there is no initial motion, so there is no kinetic energy.
Answer:
1. spring potential energy and gravitational potential energy
2. 490 joules
3. 75 joules
4. 650 joules
5. thermal energy
The components that make up the initial energy of the system consisting of a metal ball placed in a device that is one meter above the floor with a spring compressed are the gravitational potential energy and spring potential energy (option C).
When the metal ball is placed in a device with a spring compressed, located at one meter above the floor, the initial energy is given by:
[tex] \Sigma E_{i} = E_{g} + E_{s} [/tex]
[tex] \Sigma E_{i} = mgh + \frac{1}{2}kx^{2} [/tex]
Where:
[tex] E_{g}[/tex]: is the gravitational potential energy
[tex] E_{s}[/tex]: is the spring potential energy
m: is the mass of the metal ball
g: is the acceleration due to gravity
h: is the height above the floor
k: is the spring constant
x: is the distance of spring compression
Initially, there is no kinetic energy because the metal ball is at rest in the spring.
When the spring is released, the ball will be propelled into the air so the energy now is:
[tex] \Sigma E_{f} = E_{g} + E_{k} [/tex]
[tex] \Sigma E_{f} = m(h + H)g + \frac{1}{2}mv^{2} [/tex]
Where:
[tex]E_{k}[/tex]: is the kinetic energy
v: is the velocity of the metal ball
H: is the maximum height reached in the air
Therefore, the components that make up the initial energy of the system are the gravitational potential energy and spring potential energy. The correct option is C.
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I hope it helps you!
The picture represents the respiratory system.
The respiratory system. X points to the windpipe.
Which structure is represented by the X?
the pharynx
the larynx
the trachea
the bronchus
Answer:
c.
Explanation:
i took the test.
Answer:
c the trachea
Explanation:
The current theory of the structure of the Earth, called plate tectonics, tells us that the continents are in constant motion.
Assume that the North American continent can be represented by a slab of rock 4450 km on a side and 31 km deep and that the rock has an average mass density of 2620 kg/m3.
The continent is moving at the rate of about 1 cm/year.
What is the mass of the continent? Answer in units of kg.
(part 2 of 3)
What is the kinetic energy of the continent? Answer in units of J.
(part 3 of 3)
A jogger (of mass 77 kg) has the same kinetic energy as that of the continent.
What would his speed be? Answer in units of m/s.
Answer:
(a) m = 1.6 x 10²¹ kg
(b) K.E = 2.536 x 10¹¹ J
(c) v = 7.12 x 10⁵ m/s
Explanation:
(a)
First we find the volume of the continent:
V = L*W*H
where,
V = Volume of Slab = ?
L = Length of Slab = 4450 km = 4.45 x 10⁶ m
W = Width of Slab = 4450 km = 4.45 x 10⁶ m
H = Height of Slab = 31 km = 3.1 x 10⁴ m
Therefore,
V = (4.45 x 10⁶ m)(4.45 x 10⁶ m)(3.1 x 10⁴ m)
V = 6.138 x 10¹⁷ m³
Now, we find the mass:
m = density*V
m = (2620 kg/m³)(6.138 x 10¹⁷ m³)
m = 1.6 x 10²¹ kg
(b)
The kinetic energy will be:
K.E = (1/2)mv²
where,
v = speed = (1 cm/year)(0.01 m/1 cm)(1 year/365 days)(1 day/24 h)(1 h/3600 s)
v = 3.17 x 10⁻¹⁰ m/s
Therefore,
K.E = (1/2)(1.6 x 10²¹ kg)(3.17 x 10⁻¹⁰ m/s)²
K.E = 2.536 x 10¹¹ J
(c)
For the same kinetic energy but mass = 77 kg:
K.E = (1/2)mv²
2.536 x 10¹¹ J = (1/2)(77 kg)v²
v = √(2)(2.536 x 10¹¹ J)
v = 7.12 x 10⁵ m/s
IF THERE ARE ONLY 118 ELEMENTS, HOW DO YOU
ACCOUNT FOR THE MANY MILLIONS OF THINGS THAT
WE HAVE IN OUR UNIVERSE?
Answer:
Although there are only 118 elements that have been discovered and entered in the Periodic Table, there is an almost infinite multiplicity of things, materials, resources and other objects in the universe.
This is so because each of these elements can be combined with the others, varying its proportion and the inclusion of different elements, forming different things according to the proportion in which each element has been used.
What is happening between 4 and 6 hours?
Answer:
stuff
Explanation:
A mass of 50kg rests on a horizontal plane it has a coefficient of friction of 0.64, what is the minimum force needed? Take acceleration due to gravity as 9.81 m/s2.
Answer:
313.6N
Explanation:
Given parameters;
Mass of the body = 50kg
Coefficient of friction = 0.64
Acceleration due to gravity = 9.81m/s²
Unknown:
Minimum force needed to move the body = ?
Solution:
To move this body, the minimum force must overcome the frictional force. So, the value of force that equals to that of the frictional force will set the body in motion.
Frictional force = Umg
U is the coefficient of friction
m is the mass
g is the acceleration due to gravity
Now insert the parameters and solve;
Frictional force = 0.64 x 50 x 9.8 = 313.6N
We calculated the speed of visible light through four substances. What is different about the substances? Lesson: 4.10 Substance Speed of Sound A 350 m/s B 1000 m/s C С 1500 m/s D 5000 m/s Their weights are different Their shapes are different Their pressures are different Their densities are different
Answer:
it's to dense
Explanation:
If a neighbor pushes a lawnmower four times as far as you do but exerts
only half the force, which one of you does more work and by how much?
Answer:
what do you mean
Explanation:
The work done on an object depends on the force exerted and the displacement occurred for the object. If the force exerted by the man is half than what done by you, the work done will be half .
What is work done ?Work done is a physical quantity that measures the effectiveness of a force to change the motion of an object. It is the dot product of force and displacement of the object.
As the force exerted on the object is higher, higher will be the work done. Here, the man apply half force as we applied but of he do it four times, the net force will be greater and the displacement also.
However, the measurement of work done is not based on the times of action, but it is measured for single displacement. Then, half the force will result in half the work done.
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You have a summer job with the telephone company working in a group investigating the vulnerability of underground telephone lines to natural disasters. Your task is to write a computer program which will be used determine the possible harm to a telephone wire from the high electric fields caused by lightning. The underground telephone wire is supported in the center of a long, straight steel pipe that protects it. When lightening hits the ground it charges the steel pipe. You are concerned that the resulting electric field might harm the telephone wire. Since you know that the largest field on the wire will be where it leaves the end of the pipe, you calculate the electric field at that point as a function of the length of the pipe, the radius of the pipe, and the charge on the pipe
Answer:
a because it is go
Explanation:
Which energy transformation takes place in a generator?
Question 2 options:
mechanical to electrical
chemical to radiant
electrical to mechanical
radiant to electrical
Answer:
c.electrical to mechanical
Explanation:
what problems might it cause if a company tried to recycle materials without sorting them first? at least 2 or 3 sentences please!!!!
Answer:
They would probably not be looking good.. like if u don't sort it out they won't be shaped well and there are many types of plastic and if we combine them together they won't give the correct form..
hope this helps :)
how does gravity affect speed
Answer:
It is heavy which affects the speed of things.
Explanation:
What do we call the central ridge that divides the ocean floor into two parts?
A) It is a seamount.
B) It is a mountain ridge.
C) It is the Great Divide.
D) It is the mid-ocean ridge.
Answer:
D
Explanation:
What came first the egg or the chicken
Answer:
The correct approach will be "The egg". A further explanation is given below.
Explanation:
It is a fair bet to assume that the egg arrived first through amniotic eggs popping up about 340 million maybe around decades previously, with the very first chickens appearing about 58000 years later at both the youngest. Already when chickens still lived, eggs were only about already. Eggs are often much older, unlike chickens. Eggs were laid by dinosaurs, eggs were laid by the creatures the very first came out of the water, and eggs were also deposited by the strange articulated creatures that swam throughout the hot shallow waters including its Cambrian Period 5 hundred million years ago.Answer:
The chicken
Explanation:
To birds made a BIRD egg, but unexpected a chicken came out, which then made chicken eggs
BRAINLIEST IF UR RIGHT!!!
Answer:cart 3
Explanation:
the hydrosphere and lithosphere meet
Explanation:
There are known as the oceanic and continental lithospheres. ... This is where the hydrosphere and lithosphere meet. The continental lithosphere include the uppermost layers of mantle which is topped with a thick yet light continental crust. This is where the atmosphere, biosphere and hydrosphere meet the lithosphere.
What is an advantage of a hydroelectric power plant
Answer:
Hydropower is fueled by water, so it's a clean fuel source, meaning it won't pollute the air like power plants that burn fossil fuels, such as coal or natural gas. Hydroelectric power is a domestic source of energy, allowing each state to produce its own energy without being reliant on international fuel sources.
Explanation:
Answer:
I'm sorry for wasting an answer but the comments are off so.. :(
Explanation:
Here are the options kiddos
A.Hydroelectricity uses solar power to produce energy.
B.Hydroelectricity only uses natural gas to produce energy
C.Hydroelectricity is renewable energy produced from flowing water.
D.Hydroelectricity is a non-renewable energy produced from flowing water.
What is the gravitational attraction between a 70 kilogram boy and a 60 kilogram girl
who are 3 meters apart?
Answer:
[tex]F=3.11\times 10^{-8}\ N[/tex]
Explanation:
Given that,
Mass of a boy is 70 kg
Mass of a girl is 60 kg
We need to find the force of gravitational attraction between them if they are 3 m away.
The formula for the gravitational force is given by :
[tex]F=\dfrac{Gm_1m_2}{r^2}\\\\F=\dfrac{6.67\times 10^{-11}\times 70\times 60}{(3)^2}\\\\=3.11\times 10^{-8}\ N[/tex]
So, the force between them is [tex]3.11\times 10^{-8}\ N[/tex].
The gravitational attraction force between a 70 kg boy and a 60 kg girl who are 3 m apart is 3 × 10⁻⁸ N.
A 70 kilograms boy and a 60 kilograms girl are 3 meters apart. We can calculate the gravitational force between them using Newton's law of universal gravitation.
[tex]F = \frac{G \times m_1 \times m_2 }{r^{2} } = \frac{\frac{6.67 \times 10^{-11}N.m^{2} }{kg^{2} } \times 70kg \times 60 kg }{(3m)^{2} } = 3 \times 10^{-8} N[/tex]
where,
F = force G = gravitational constant m₁ = mass of object 1 m₂ = mass of object 2 r = distance between centers of the massesThe gravitational attraction force between a 70 kg boy and a 60 kg girl who are 3 m apart is 3 × 10⁻⁸ N.
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Please help with this question
Answer:
I believe the answer is 5718.75. Respond if it is wrong please.
Explanation:
I used a calculator.
ANSWERED: An object with a massive 5 kg is thrown with an initial velocity of 6 m/s. If the object has an initial height of 10 meters above the ground, what is the magnitude of the initial gravitational potential energy of the object? The acceleration due to gravity is 9.8 m/s^2.
Answer: 490 joules.
Explanation:
The velocity is not needed. (its needed to find kinetic energy but its irrelevant to the question)
Potential energy = Mgh
Mass=5kg, height=10meters, g=9.8
P.e=5×9.8×10
=5×98
=490 joules
Hope it helps
:)
An object with a massive 5 kg is thrown with an initial velocity of 6 m/s. If the object has an initial height of 10 meters above the ground, then the magnitude of the initial potential energy of the object would be
490 Joules.
What is mechanical energy?As total mechanical energy is the sum of all the kinetic as well as potential energy stored in the system.
ME = KE + PE
As given in the problem An object with a massive 5 kg is thrown with an initial velocity of 6 m/s. If the object has an initial height of 10 meters above the ground,
PE = mgh
PE = 5*9.8*10
= 490 Joules
Thus, the initial gravitational potential energy of the object would be 490 Joules.
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A basketball is shot at 14.0 m/s at a 65.0 degree angle. What is the magnitude only (no direction) of the velocity of the ball 2.16 seconds later?
(I reposted this because some idiot trolled the last one)
Answer:
10.4 m/s
Explanation:
Plz help with this
And thanks
Answer:
because the car is going toward the road and its wheels are also accelerating
the reason we say it's accelerating it's because the car is changing direction
Question 7
A thick uniform rubber rope of density 0.7 gcm-3 and Young Modulus 5 x 106 Nm 2 has a length 6.7 m. when
hung from the ceiling of the room, calculate the increase in length due to its own weight ?
O A. 35.79 x 10-2 m
O B. 43.81 x 10-2 m
OC.52.34 x 10-2 m
O D.61.65 x 10-2m
Answer:
Increase in length, e = 61.59 * 10⁻²m
The closest value from the options is option D. 61.65 x 10-2m
Explanation:
Young Modulus = stress/strain = (F/A)(/e/L) = F * L/A * e
where F = force; L = original length; A = area; e = increase in length
making e subject of formula; [tex]e = F * L/Y * A[/tex]
Also force, F = mass * acceleration due to gravity;
mass = density * volume = density * area * length = ρ * A * L
Therefore, force, F = ρ * A * L * g
e = ρ *A * L* L * g/Y * A = ρgL²/Y
density = 0.7 gcm⁻³ = 0.7 * 10³ kgm⁻³; g = 9.8 ms⁻²
e = {0.7 * 10³ kgm⁻³ * (6.7 m)² * 9.8 ms⁻²}/5 * 10⁶ Nm²
e = 61.59 * 10⁻² m
HURRY FAST PLEASE 75 POINTS
A 50 kg block is accelerating
down a 40° incline. The
coefficient of friction (u) between
the block and the incline is 0.30.
Draw the free body diagram,
label the forces, and calculate
acceleration
1. 10.02 m/s2
2. 8.81 m/s2
3. 3.76 m/s2
4. 5.51 m/s2
5. 6.67 m/s2
so hi the answert is probably 4 or e
Answer:
5.51 m/s2
Explanation:
HOPE THIS HELPS!!!!
A car moving at 20 m/s crashes into a bridge abutment. Calculate the magnitude of the average force on a 60 kg driver if the car stopped over a period of 2 seconds by crashing into a row of water filled barrels.
Answer:
600NExplanation:
Step one:
given data
velocity = 20m/s
mass m= 60kg
time t= 2 seconds
The impulse is the force acting instantly
the expression for impulse is
Ft=mv
F=mv/t
substituting we have
F=60*20/2
F=1200/2
F=600N
Therefore the average force is 600N
Which mineral is also an element graphite courts calcite hematite
Answer:
look in lesson brainly can some time be wrong
Which statement explains why a short eyeball causes farsightedness?
O The rays of light focus directly on the retina.
O The rays of light focus beyond the retina.
O The rays of light focus next to the retina.
O The rays of light focus in front of the retina.
Use the drop-down menus to complete the statements. v ion is formed. OS When electrons are lost, a ____ When electrons are gained, a ____ ion is formed.
Answer:
Positive
negative
this is on edgy
Explanation:
I got it right when I did this.
Answer:
1. Positive
2. Negative
Explanation: edge 2021
Hope this helps! :)
If someone is attempting to focus on multiple tasks at one time, it could be said that they have divided attention.
Please select the best answer from the choices provided
T
F
If someone is attempting to focus on multiple tasks at one time, it could be said that they have divided attention. the statement is true.
What is attention?The capacity for active processing of a particular piece of environmental information while tuning out other details is known as attention. In order to make sense of the world, we need to be able to properly manage the attentional resources we have at our disposal because attention is constrained in terms of both capacity and duration.
What is divided attention?Our brain's capacity to attend to two separate stimuli at once and respond to the various demands of our environment is known as divided attention. Divided attention, a type of simultaneous attention, enables us to successfully process several information sources and do multiple tasks at once. It is crucial to have these cognitive abilities since they help us live more effectively every day.
When someone is attempting to focus on multiple tasks at one time, his brain attends more than one stimuli at the same time and respond to the more than one demands of his surroundings. So, it could be said that they have divided attention.
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