Answer:
100ft
Explanation:
A uniform conducting rod of length 23 cm has a potential difference across its ends equal to 66 mV (millivolts). What is the magnitude of the electric field inside the conductor in units of N/C
The magnitude of the electric field inside the conductor will be 0.208 N/C.
What is an electric field?An electric field is an electric property that is connected with any location in space where a charge exists in any form. The electric force per unit charge is another term for an electric field.
Given data;
length of rod = 25 cm = 0.25 m
Potential Difference = 52 mV = 0.052 Volts
The electric field is found as the ratio of the potential difference and the length;
[tex]\rm E =\frac{0.052}{0.25} \\\\ E=0.208 \ N/C[/tex]
Hence,the magnitude of the electric field inside the conductor will be 0.208 N/C.
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What is the speed of a wave with a frequency of 10 Hz. and a wavelength of 10 m? (Show Work)
Answer:
100m/s
Explanation:
speed of wave=frequency × wave length
=10 × 10
=100m/s
Answer:
100 m/s
Explanation:
Formula :
Wave speed (m/s) = Frequency (s⁻¹) x Wavelength (m)Solving using the given values :
Wave speed = 10 Hz x 10 mWave speed = 100 m/sExplain what happens to plasma osmolarity when you give a severely dehydrated person large amounts of pure water.
Plasma osmolarity increases when you give a severely dehydrated person large amounts of pure water.
What is plasma osmolarity?The electrolyte–water balance of the body is measured by plasma osmolality. This amount can be determined in a variety of ways, including measurement and computation.
Osmolality and osmolarity are two separate measurements that are used interchangeably in everyday situations.
When you are dehydrated, osmolality rises, and when you have too much fluid in your blood, it drops.
The way your body regulates osmolality is unique. When your body's osmolality rises, your body produces antidiuretic hormone.
Hence,plasma osmolarity increases when you give a severely dehydrated person large amounts of pure water.
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I NEED HELP!!!!
The three areas of discipline are ________.
isolation
instruction
punishment
admonition
nurture
Answer:
Instruction, admonition, nurture
Explanation:
the practice of training people to obey rules or a code of behavior, using punishment to correct disobedience:When two forces act in the same direction on an object, the net force is found by ....................the forces.
1. adding
2.subtracting
3.multipling
4.dividing
Answer:
By ADDING the forces
Explanation:
If 100.0 g of carbon-14 decays until only 25.0 g of carbon is left after 11 460 y, what is
the half-life of carbon-14?
Answer:
5730 yr
Explanation:
25 = 100 (1/2)^11460/x where x = half life
.25 = (1/2)^11460/x
log .25 / log.5 = 11460/x
x = 5730 yr
What property of a wave remains unchanged when a wave enters a different medium? a. amplitude b. frequency c. wavelength d. velocity e. density
The characteristic of waves that remains unchanged when it enters a distinct medium is the frequency (Option B).
What is wave frequency?The expression 'wave frequency' indicates the period of time or occurrence of a particular type of wave.
This period or wave frequency is always an independent variable of the medium in which the wave travels.In conclusion, the characteristic of waves that remains unchanged when it enters a distinct medium is the frequency (Option B).
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Answer: B. frequency
Explanation: plato answer :)
Most of the known stars in the Universe are?
Air masses that form over continents in source regions that are cold are called__________.
Group of answer choices:
continental tropical (cT)
maritime tropical (mT)
maritime polar (mP)
continental polar (cP)
Answer:
Continental polar.
Explanation:
it should be a continental polar air mass because, it is cold.
The acceleration due to gravity on earth is 6 times that on the moon. An object weighs 10 kg on Earth. What is the mass on the moon?
Answer:
The object obeys the equation
F = M a on both the earth and the moon (mass does not depend on location)
The problem is a little misleading because if an object has a mass of
10 kg then its weight is 10 kg * 9.8 m/s^2 = 98 Newtons
That means that weight is not expressed in Kg but rather in Newtons
Newton's Law is true on the moon as it is on the earth and F = M a
An object that weighed 10 N on earth would weigh 10 / 6 = 1.67 N on the moon
One must take care in describing a force in units of Newtons not in Kg
how deep under water would you need to be in order to be at double atomosphric pressure
Answer:
You would need to be 33 feet deep.
Explanation:
Equator
01
Equator
A
B
The figure above shows the Earth at two different positions in its orbit around the Sun. If Texas is in the Northern Hemisphere,
which is the top half of the Earth, which position corresponds to summer in Texas?
A. position B
B. neither position A nor position B
C. position A
D. both position A and position B
Answer:
A) position B
As the earth rotates about its axis (shown tilted), the northern half will receive more sunlight than the southern half which is in winter
Select all the correct answers. which two statements are true about all generators? they convert motion energy to electric energy. they have a fixed pair of magnets and a rotating metal coil. they’re powered by fossil fuels. they convert electric energy to motion energy. they use the relative motion of a magnet and a coil of wire.
The two correct statements about generators are, they convert motion energy to electric energy and they use the relative motion of a magnet and a coil of wire.
What are generators?Generators are devices which convert mechanical energy into electrical energy.
Generators work by the laws of electromagnetism.
There are two types of generators, A.C. and D.C. generators.
Therefore, the two correct statements about generators are, they convert motion energy to electric energy and they use the relative motion of a magnet and a coil of wire.
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a car is traveling at 20 m/s and speeds up to 35 m/s in 5 seconds. What is the car's acceleration?
Answer: Acceleration =3m/s^2
Explanation:
How do astronauts counteract the effects of microgravity on their bones while they are in space?.
Answer:
they use a spaceship plus oxygen space has a gravitational force
#2. If we have a 9V battery connected to a 100 resistor , what is the current ?
Answer:
90 mAmps
Explanation:
V=IR
V/R = I
9 v / 100 ohm = .09 amps = 90 mAmps
A wave travels at 18 m/s and has a wavelength of 3 meters. What is the frequency of the wave?
Answer:
0.1667Hz
Explanation:
by explanation frequency is given by 1/time
after carrying out the calculation of time we can easily get frequency.
time=speed/distance
=18/3
=6s
but frequency=1/time
hence=1/6
=0.1667hertz
A sound wave has a frequency of 265 hz and a wavelength measured at 1.3
m. the speed of the wave is 344.5 m/s.
how long will it take the wave to travel the length of a football field, which
is 91.4 m?
Answer:
V = f λ speed of wave in terms of frequency and wavelength
t = S / V time for wave to travel a distance S
t = 91.4 m / 344.5 m/s = .265 sec time to travel 91.4 m
A cross-country runner runs 4 km in 15 minutes. What can you calculate using this information?
One can calculate speed from the given data. The speed is 4.44m/s.
What is speed?The speed is the ratio of distance and the time taken to cover that distance.
Given is the distance d =4km =4000m and the time taken t 15 min =15 x60 =900 s
Then the speed will be
s = d/t
s = 4000/900
s= 4.44 m/s
Thus, the speed is calculated as 4.44m/s.
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Which direction will the box move?
Net force
F1-F2-F35-10-205-30-25NAs it's negative the box will move left
All the following are momentum oscillators except a. Relative Strength Index (RSI) b. Moving Average Convergence/Divergence (MACD) c. Stochastics d. Advance/Decline Line
All the following are momentum oscillators except Advance/Decline Line.
What are momentum oscillators?
Momentum oscillators measure the amount that a security's price has changed over a given period of time.
Examples of momentum oscillatorsRelative Strength Index (RSI) Moving Average Convergence/Divergence (MACD) StochasticsThus, all the following are momentum oscillators except Advance/Decline Line.
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compare charging by rubbing and charging by sharing
Charging by rubbing needs physical contact, and charging by sharing does not need any contact.
What is the charge?When the matter is put in an electromagnetic field, it has an electric charge, which causes it to experience a force. Similar charges repel each other, whereas dissimilar charges attract each other.
An electrical charge is created when two distinct insulating materials are rubbed together.
Charge sharing is a signal degradation phenomenon that occurs when charges are transferred from one electronic domain to another.
Electrostatics is the phenomenon of charging by rubbing, whereas induction is the phenomenon of charging by sharing.
Hence, charging by rubbing needs physical contact, and charging by sharing does not need any contact.
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Wind turbines are becoming an increasingly popular method of generating a community’s electricity. In wind turbines, wind is used to power electric generators. How will an increase in the use of wind turbines affect the availability of wind in the future?
Answer:
It will not. The thing with wind is as long as the earth rotates and creates and uneven heating of the atmosphere, there will be infinite wind.
Explanation:
At what time did time begin
50 points :)
Answer:
According to the standard big bang model of cosmology, time began together with the universe in a singularity approximately 14 billion years ago.
Explanation: the big bang
Answer:
approximately 14 billion years ago
Identify evidence that supports the theories of continental drift and plate tectonics. put responses in the correct input to answer the question. select a response, navigate to the desired input and insert the response. responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. responses can also be moved by dragging with a mouse. glossopteris plant fossils found in several southern hemisphere continents. the same types of rocks are found on either side of the atlantic ocean. there are no ocean floor rocks older than 180 million years. the pattern of rock ages shows new rock forming at mid-ocean ridges and spreading away from the ridge in both directions. the shapes of south america and africa appear to fit together. the majority of earthquakes and volcanoes occur along easily recognized bands called tectonic plate boundaries. lystrosaurus reptile fossils are found on several southern hemisphere continents. the same type of sediment deposits are found in several southern continents. magnetism in rocks of different ages don't point to the same north pole locations. science
The evidence that supports continental drift and plate tectonics includes different fossils, the same rocks and the shapes of continents that fit together.
What is continental drift?Continental drift is a theory that states continents once were part of one big landmass known as Pangea.
Nowadays, the theory of continental drift proposed by Alfred Wegener has been replaced by plate tectonics.
In conclusion, the evidence that supports continental drift and plate tectonics includes fossils, the same rocks and the shapes of continents that fit together.
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density of water? And tin?
Answer:
the density of water is 1 and tin is 7.31 if i remember right
Explanation:
Mutations and New Traits. Before watching the video, list one or two questions you may have about mutations. Alternatively, you can list a few things you already know about mutations.
Answer:
No, there are multiple ways in which different mutations in the same gene can cause the same phenotype
Explanation:
Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)
These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.
There could be a single base deletion in the first exon of the mRNA, changing the reading frame of the protein and messing up the entire sequence (a frame shift mutations)
The entire gene could be deleted
A single base could be substituted in an important site of the gene, for example, one which translates into a catalytic residue or binding site in the protein
There could be an inversion at the promoter region of the gene, such that a transcription factor can no longer bind to transcribe the gene.
There are countless other ways in which a mutation could have been caused. Therefore, just because we know the same gene is affected does not mean that we can assume the mutations are identical.
What is a hydrometer?
Answer:
an instrument for measuring the density of liquids.
Explanation:
Throughout this lesson, you learned about the lives and contributions of key scientists in this area of physics. Create a timeline that ties them all together. The timeline does not need to be highly detailed, but it should do the following:
Include at least the four major scientists covered in this unit: Oersted, Ampère, Faraday, and Tesla.
Include key contributions of each scientist and provide a year, if possible, for those contributions.
Note any relationships among these and other scientists, especially if one developed something based on the work of another.
Arrange the scientists chronologically by their first key contribution, not by their birth date.
Oersted -Electromagnetic theory in 1820(July).
Ampere - Static needle -a component of galvanometer in 1820 (September).
Faraday - Electromagnetic induction in 1831.
Tesla - First Alternating current motor and transmission system in 1882.
What is magnetic field?The region of space where a charged object moves in the direction of magnetic force and induces current.
Thus, the scientist are arranged chronologically with their key inventions.
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A man makes a ruler with graduation in cm i.e 100 divisions in 1m on it. To what accuracy can this ruler measure? how can this accuracy be increased?
Let's find the shortest distance possible
To calculate we need the length per division divide total length by divisions
1/100m0.001m0.1cm1mmTill 1 mm it can measure
To increase accuracy increase no of divisons