Answer:
A. It is made of tissues that can conduct electricity, a required function in a system.
Explanation:
The nervous system helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body. The nervous system uses both electrical and chemical means to send and receive messages.
Answer:
D
Explanation:
it is D because a system needs to manage a large organism like us to allow us to live, therefore, needs to work with other systems to keep us alive
10 turns of wire are closely wound around a pencil as shown in the figure. when measured using a scale as shown, the length of total turns is obtained 25mm. then a) What is the thickness of the wire? b) Express the thickness of the wire in centimetre.
Answer:
1. 2.5 mm
2. 0.25 cm
Explanation:
Since the length of the 10 turns of the wire around the pencil is 25 mm, then;
1. the thickness of the wire = [tex]\frac{length of total turns}{number of turns}[/tex]
= [tex]\frac{25}{10}[/tex]
= 2.5 mm
The thickness of the wire is 2.5 mm.
2. Since 10 mm = 1 cm, then;
25 mm = 2.5 cm
So that,
the thickness of the wire in centimetre = [tex]\frac{length of total turns}{number of turns}[/tex]
= [tex]\frac{2.5}{10}[/tex]
= 0.25 cm
The thickness of the wire is 0.25 cm.
A man walks a distance of 2 m every second.
aj What speed is he travelling at?
b) How far wil he have walked in:
5 s
50 s
2 min
2 hr
Please help :(.
I NEED HELP ASAP!!!
The product of the component of a force along the direction of displacement and the magnitude of the displacement are known as:
a.
net force
c.
velocity
b.
work
d.
power
Answer:
a
Explanation:
thats yes according to kinematics
4. Without the sun, there would be no way to replace energy released into the environment. True or False
Answer:
true
Explanation:
Select all that apply. PLZ
Which of the following do not illustrate a complete circuit?
D
C
A
B
How much work is done when an engine generates 400 Watts of power in 25 seconds?
Answer:
10000 J or 10 KJ
Explanation:
power = workdone/time taken
400 = workdone/25
workdone = 400 * 25
=10000 J
What happens to the force of gravity between two planets if their masses are both doubled and the distance between them remains the same?
doubles
quadruples
stays the same
decreases to ¼ its original value
Answer:
it Quadruples
Explanation:
Ocean divers:
must breathe a mixture of oxygen and helium
cannot withstand the pressure of the ocean without special equipment
may one day breathe with artificial gills
all of the above
Answer:
all of the above.Explanation:
Answer:
im not sure but i think b. cannot withstand the pressure...
if not all the above.
Explanation:
The equation that relates two poles to the force between them and their separation is the ____ square law.
a. exponential
b.inverse
c.double
Wo do u think the best male tennis player currently still playing?
1. Rafael nadal
2.Roger federer
3.Novak Djokovic
Answer:
--..-...-...-.---..-...-...
Answer: right now its djokovic
Explanation:
I am a federer and nadal fan but djokovic is dominating. federer has retired and nadal isnt at his best due to injuries and his age.
A roller coaster is moving 10 m/s and a mass of 7 kg. The roller coaster has
energy. Calculate it
HELP ASAP!!
Hello,
QUESTION)A roller coaster is moving 10 m/s and a mass of 7 kg. The roller coaster has kinetic energy.
✔ We have : Ek = 1/2m x v²; with Ek in J, m in kg and v in m/s
Ek = 1/2 x 7 x 10²Ek = 350 JIf the velocity of a car is 45km/h west, how far can it travel in 0.5 hours
Answer:
22.5km
Explanation:
Since 0.5 of an hour is half of an hour, you have to divide 45 by half, and you would get 22.5 km
Mosa believes that ocean currents help to regulate the climate of the earth. Explain why.
Answer:
Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface. Without currents in the ocean, regional temperatures would be more extreme—super hot at the equator and frigid toward the poles—and much less of Earth's land would be habitable.
Ocean currents help to regulate the climate of the earth as it transports warm water from the equator to the polar region and carry cold water from poles back towards the equator .
What is an ocean currents ?
An ocean current is a continuous , directed movement of sea water generated because wind , breaking waves , temperature , salinity differences etc .
Ocean currents that move from north to south ,transports warm water from the equator to the polar region and carry cold water from poles back towards the equator . This is how ocean currents help to counteract the uneven distribution of solar radiation , without ocean current it would be really hot in equator and really cold at poles.
learn more about Ocean currents
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Two soccer players kick the same 1-kg ball at the same time in opposite directions. One kicks with a force of 25 N; the other kicks with a force of 10 N. What is the resulting acceleration of the ball, in m/s2 Answer here I
Answer:
The forces offset to produce a net force of 8 N
since the ball is 1 kg
F = ma
a = f/m = 8 N/1 kg = 8 (kg m)/(s^2 kg) = 8 m/s^2
Answer:
15 (These are just here to increase the word limit)
PLS HELP DUE IN 1 HOUR
Answer: A
Explanation:
A car has moved 6.8 m from when the driver saw the red light to come to a full stop. If the driver was moving with 31.7 m/s when they saw the traffic light, how long did it take for
them to come to stop?
Answer:
i believe that the answer is 4.661764706 seconds
The release of energy by the nucleus of an atom as a result of nuclear fission is radiant energy
True or false
Identify 3 parts of your body what are formed from specialized cells or tissues. What makes those cells unique?
Answer:
Cells make up tissues, tissues make up organs, and organs make up organ systems. ... organisms have specialized systems that maintain the internal environment, ... the different organ systems as though they were distinct, parts of one system
Explanation:
5) Why mercury is used as thermometeic liquid
Answer: becuase----Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. ... It also has a high boiling point which makes it very suitable to measure higher temperatures. Also, it has a shiny appearance and doesn't stick to the glass surface of glass.
Explanation: hope i helped c:
An object of mass 150 kg accelerates from a velocity of 5m/s to a velocity of 10m/s in the same direction. What is the impulse provided to cause this acceleration?
Answer:
If it accelerated from 5 to 10 in one second then we know that acceleration is final (velocity-initial velocity)/
time
this gives (10-5)/1
=5m/s^2
force = mass x acceleration so = 150 x 5
this gives us a force of 750N
impulse is force x time so = 750 x 1
this tells us the impulse is 750 N.s
All of this is assuming it accelerated to 10m/s in one second.
The definition of impulse allows to find the impulse response for the acceleration of the body is:
The impluse in acceleration direction is: I = 750 N s
Given parameters
Body mass m 150 kg The initial velocity vo = 5 m / s The final velocity vf = 10 m / sTo find
Impulse
The impulse is the change of the momentum of a body, it is a vector quantity
I = ∫ F. dt = Δp
Where the bold indicate vectors, I is the momentum, F the force, t the time, Δp the change in moment
The momentum is defined as the product of the mass of the body and its speed.
p = m v
We substitute in the expression of impulse
I = [tex]m v_f - m v_o[/tex]
Let's calculate.
I = 150 (10 -5)
I = 750 N s
In the direction of acceleration.
In conclusion using the definite of impulse we can find the impulse response for the acceleration of the body is:
The impluse in acceleration direction is: I = 750 N s
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If you are sitting 8.20 m from a
70.0 W speaker, what is the
sound level in dB?
(Treat the speaker as a point source.)
(Unit = dB)
The sound level will be 109 decibels. If a person exceed hear a sound more than the certain sound level, the person hearing may damage.
What is sound level?Sound level is the intensity to measure the sound. Decibels are used to quantify sound level.
Sound level or the sound intensity is the ratio of the power to the surface area;
[tex]\rm Intensity = \frac{Pow\pi er }{Surface \ area} \\\\ \rm Intensity = \frac{70}{ 4 \times \pi \times 8 \times 20^{2} } \\\\ I = \ 0.082 \ W/m^2[/tex]
The conversion of the obtained value into the decibel as;
[tex]\rm I = 10 \times log \frac{I}{1 \TIMES 10^{-12}} \\\\\ I = 109 \ decibel[/tex]
Hence, the sound level will be 109 decibels.
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what name given to the heat energy received from the sun
Answer:
solar energy
Explanation:
Please mark as the brainliest.
Answer:
The Name of the heat energy from the is called solar energy.
The release of energy by the nucleus of an atom as a result of nuclear fission is radian energy
True or false
A Balloon is filled with water inside, when it is hanged over a burning fire the balloon filled with water doesn't brust why??
because of the water buddy
Read the excerpt from " Crossing the Brooklyn Ferry." Flood-tide below me! I see you face to face! Clouds of the west – sun there half an hour high – I see you also face to face. Which statement best describes the effect of repeating the phrase "face to face"? It shows that the narrator sees the facial features of others. It demonstrates that the narrator is surrounded by nature. It demonstrates that the narrator is surrounded by people. It shows that the narrator is suspicious of the sea and sky.
Answer:
It demonstrates that the narrator is surrounded by nature.
Explanation:
Walt Whitman's "Crossing the Brooklyn Ferry" is a free verse poem written about the speaker's return trip on a ferry. He talks about his daily commute on the Brooklyn ferry, like the other commuters, and how they all share the same experience.
The given lines are from the very first stanza of the poem. The speaker repeats "face-to-face" when talking about nature. He sees the "flood-tide below" and the "clouds" high in the sky. This repetition demonstrates that he is surrounded by nature, amidst the throng of people around him. This shows the speaker's attitude of seeing the beauty of nature in any way he can, despite the bustle of commuting from Brooklyn to Manhattan.
Thus, the correct answer is the second option.
Answer:
B
Explanation:
edge 2023
What are the mechanical advantage and mechanical efficiency of a lever that requires an input force of 40 N and lifts and lifts a boulder that weighs 80 N?
Answer:
2 , 200%
Explanation:
Mechanical advantage of a machine is defined as how much the machine multiplies the applied force.
It is given that :
Input force of the lever = 40 N
The weight of the boulder or the output force = 80 N
Therefore, the mechanical advantage = output force / input force
[tex]$=\frac{80}{40}$[/tex]
= 2
Mechanical efficiency is obtained by the dividing the output by the input and multiplying it with 100.
i.e. Efficiency = output / input x 100
[tex]$=\frac{80}{40}\times 100$[/tex]
= 200 %
An upward force applied by a fluid on an object in the fluid is the
O spring force
O Archimedes Principle
O buoyant force
O Hooke's Law
Susie rolls a bowling ball down the alley and knocks over most of the pins. Explain why fewer pins were knocked over when her little brother rolled a basketball, at the same velocity, down the alley.
Answer:
The force used
Explanation:
This has to be because of the force used. Both Susie and her younger brother might have hit the ball with the same velocity, but they surely couldn't have hit it with the same force. The force with which Susie hurts it is heavier than that with which her younger brother hits it, and as such, Susie gets to fall down more pins than her brother will be able to. The ball has to have a lot of force in it for it to be able to knock off all the pins there. So basically, the more the force, the higher it's chances of hitting all the pins
Use words to describe the relationship between the acceleration of an object and the net force acting on the object
Reference point is required to calculate relative velocity. Why?
Answer:
he relative velocity (also or ) is the velocity of an object or observer B in the rest frame of another object or observer A.
