The acceleration of electron and protons are[tex]a = 2.64 \times 10^{13[/tex]m/s² [tex]a = 1.44 \times 10^{10[/tex] m/s² respectively.
What is electric field?Electric field is a region around a charged particle or object within which a force would be exerted on other charged particles or objects.
Given that,
Magnitude of electric field is
E = 150N/C
a. Acceleration of election?
The charge on an electron is
[tex]q = -1.602\times 10^{-19[/tex]
then, the force in electric field is given as
F=qE
[tex]F = 150\times 1.602\times 10^{-19[/tex]
[tex]F = 2.403\times10^{-17} N[/tex]
Using second law of motion
F= ma
Then, [tex]a =\dfrac{ F}{m}[/tex]
Then, mass of electron is
[tex]m = 9.11 \times 10^{-31}kg[/tex]
Therefore,
[tex]a =\dfrac{ F}{m}[/tex]
[tex]a = \dfrac{2.403\times 10^{-17}}{9.11\times 10^{-31}}[/tex]
[tex]a = 2.64 \times 10^{13}[/tex]
That’s the magnitude of the electron’s acceleration.
Since the electron has a negative charge the direction of the force on the electron (and also the acceleration) is opposite the direction of the electric field.
b. Same procedure
Acceleration of proton?
The charge on a proton is
[tex]q = +1.602\times 10^{-19}[/tex]
then, the force in electric field is given as
F=qE
[tex]F = 150\times 1.602\times 10^{-19}[/tex]
[tex]F = 2.403\times 10^{-17} N[/tex]
Using second law of motion
F= ma
Then, [tex]a =\dfrac{ F}{m}[/tex]
Then, mass of proton is
[tex]m = 1.67 \times 10^{-27}\ kg[/tex]
Therefore,
[tex]a =\dfrac{ F}{m}[/tex]
[tex]a = \dfrac{2.403\times 10{^-17}}{1.67\times 10^{-27}}[/tex]
a = 1.44 ×10^10m/s²
That’s the magnitude of the proton's acceleration.
Since the proton has a positive charge the direction of the force on the proton (and also the acceleration) is in the same direction of the electric field.
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6. For a cell to produce a current, the
electrodes of the cell must.
a. have a potential difference.
b. be in a liquid.
c. be at two different temperatures.
d. be flattened,
Answer:
for a cell to produce a current the cell electrodes of the cell must have a potential difference option A is the correct answer
23
Select the correct answer.
Jeff has 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Jeff heats both liquids
over a flame for five minutes. When he's finished, he discovers that the temperature of the oil increased more than the temperature of the
water. What can Jeff conclude from this experiment?
OA. Vegetable oil is a better conductor of heat than water.
OB. Water is a better conductor of heat than vegetable oil.
OC. Vegetable oil has a higher heat capacity than water.
OD. Vegetable oil has a lower heat capacity than water.
O E. Vegetable oil is a good insulator.
Reset
Next
Answer: Vegetable oil has a higher heat capacity than water. Option C is correct.
It is given 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Now Jeff heats both liquids over a flame for five minutes.
It is required to find why the temperature of the oil increased more than the temperature of the water.
What can Jeff conclude from his experiment?Heat capacity determines the heat that is supplied to the body that will be caused by heat of the body.
The vegetable oil warmed more when Jeff increased the temperature. This is because the hydrogen bonding present is responsible for this as oil catches fire easily.
Also to change the temperature of the water, we need more energy per gram of particular liquid.
Therefore, Vegetable oil has a higher heat capacity than water as water requires more energy.
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A 900 kg car speeds up from 33m/s to 45 m/s. How much work is done to increse the speed?
Hint: ( Work done = Change in energy, here it is change in K.E)
Answer:
f=ma
m=900
a=45-33=12÷1=12
12×900=f
f=10800
How is sound intensity measured?
Answer:
Sound intensity is measured with a sound level meter or Sound pressure Level (SPL) Meter.
Explanation:-
It measure sound intensity is the sound pressure level. The unit of measurement is decibels.
Find the magnitude and direction of
the net force being acted on the
free body diagram below.(look at the picture I provided)
Explanation:
Pick your direction of the perpendicular forces.
Let down be negative and up be positive.
Remember that sum of all the forces is the net force,
So for the vertical forces, we have
[tex]45 + ( - 45) = 0[/tex]
Next, pick your direction of the parallel forces.
Let right be positive and left be negative so we have
[tex]15 + ( - 45) = - 30[/tex]
So our net force is 30 N to the left
Which statement best describes air pressure at high altitudes?
Question 12 options:
Air pressure does not change as altitude increases
It is impossible to accurately measure air pressure at high altitudes
Air pressure decreases as altitude increases
Air pressure increases as altitudes increases
Answer:
Air pressure decreases as altitude increases.
Explanation:
Why are we unlikely to find earth-like planets around halo stars in the galaxy?.
The galaxy comprises of various stars. We are unlikely to find earth-like planets around halo stars in the galaxy because Halo stars need few heavy elements to create rocky planets.
What is galaxy?A galaxy is a massive cluster of stars held together by t he effect of gravity.
Halo stars formed in an environment where there were few heavy elements to create rocky planets.
Thus, we are unlikely to find earth-like planets around halo stars in the galaxy because Halo stars need few heavy elements to create rocky planets.
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The rate of change of velocity is called:.
Answer: Acceleration
Detailed Explanation:
Acceleration is defined as the rate of change of velocity.
if a tree falls in the wood and no won sees it dose it exist
Which substance, when mixed with water, will produce the best conductor of electricity?.
Answer:
Table Salt
Explanation:
Table Salt has free ions in water that conduct electricity so when mixed with water produces the best conductance of electricity
How long will it be before the moon will be too far away from Earth to totally cover the sun after a solar eclipse?
Answer:
600 million years
Explanation:
i think its pretty simple and u should memorize it :)
An astronaut lands on a new, recently discovered planet in a different star system. The astronaut measures the acceleration due to gravity on the planet to be 12m/s2, and the mass of the planet is measured to be 7. 5E23kg. What is the radius of the new planet?
Answer:
The radius of the new planet is ~2.04 * 10⁶ m, or 2,041,752 m.
Explanation:
We can use Newton's Law of Universal Gravitation:
[tex]\displaystyle F_g=G\frac{Mm}{r^2}[/tex]Let's look at Newton's 2nd Law:
[tex]F=ma[/tex]We can set these equations equal to each other:
[tex]\displaystyle G\frac{Mm}{r^2} =ma[/tex]The mass of the second mass (astronaut) cancels out. We are left with:
[tex]\displaystyle G\frac{M}{r^2} =a[/tex]We are solving for the radius of the new planet, so we can rearrange the equation:
[tex]\displaystyle r=\sqrt{\frac{GM}{a} }[/tex]Substitute in our known values given in the problem (G = 6.67 * 10⁻¹¹ ; M = 7.5 * 10²³ ; a = 12).
[tex]\displaystyle r =\sqrt{\frac{(6.67\times 10^{-11})(7.5 \times 10^{23}}{12} }[/tex][tex]r=2.04 \times 10^6[/tex]The radius of the new planet is ~2.04 * 10⁶ m.
A tube is open only at one end. A certain harmonic produced by the tube has a frequency of 475 hz. The next higher harmonic has a frequency of 1425 hz. The speed of sound in air is 343 m/s
The formula for the fundamental frequency for an open tube at one end is : F = nV/4L the integer n = 3 which describe the frequency 450 hertz and length of tube L = 0.6m approximately
What is frequency?Frequency of the object is defined as the number of cycles attend in a second .
Given that a tube is open only at one end. And a certain harmonic produced by the tube has a frequency of 450 Hz. The next higher harmonic has a frequency of 750 Hz. The formula for the fundamental frequency for an open tube at one end is :
[tex]F = \dfrac{V}{4L}[/tex]
That is, 1st harmonic
[tex]\dfrac{V}{4L} = F[/tex]
2nd harmonic =
[tex]\dfrac{3V}{4L} = 3F[/tex]
3rd harmonic =
[tex]\dfrac{5V}{4L} = 5F[/tex]
The general formula can therefore be [tex]F =\dfrac{ nV}{4L}[/tex]
For the first harmonic in the question,
[tex]450 = \dfrac{343n}{4L}[/tex]
make 4L the subject of the formula
[tex]4L = \dfrac{343n}{450}[/tex]
The next higher harmonic will be
[tex]750 = \dfrac{343(n + 2)}{4L}[/tex]
make 4L the subject of the formula
[tex]4L = \dfrac{343(n + 2)}{ 750}[/tex]
Equate the two 4L
[tex]\dfrac{343n}{450} = \dfrac{343( n + 2)}{750}[/tex]
cross multiply
[tex]257250n = 154350( n + 2 )[/tex]
[tex]257250n = 154350n + 308700[/tex]
collect the likes term
[tex]257250n - 154350n = 308700[/tex]
[tex]102900n = 308700[/tex]
[tex]n =\dfrac{ 308700}{102900}[/tex]
n = 3
Given that the speed of sound in air is 343 m/s, The length of the tube can be calculate by using the same formula.
[tex]F = \dfrac{nV}{4L}[/tex]
[tex]450 = \dfrac{3(343)}{4L}[/tex]
[tex]4L = \dfrac{1029}{450}[/tex]
4L = 2.28
[tex]L = \dfrac{2.28}{4}[/tex]
L = 0.57 m
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A discrete spectral line occurs at an angle of 9.1° in the first order spectrum. If the grating has 3,660 lines/cm, what is the wavelength of this color of light?
Answer:
your answer would be c !
Explanation:
The load across a 12-v battery consists of a series combination of three resistances are 15 ω, 21 ω, and 24 ω, respectively
The magnitude of the circuit current is 0.20 A. The value of the current in the circuit is found with the help of the ohm's law.
What is ohm’s law?Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.
All the resistance combined in the series so that the equivalent resistance is;
[tex]\rm R_{eq}= R_1+R_2+R_3 \\\\ R_{eq}=15+21+24 \\\\ R_{eq}=60 \ ohm[/tex]
This current-voltage connection may be expressed mathematically by the Ohm's Law;
V=IR
[tex]\rm I_{total} = \frac{V}{R_{total}} \\\\ \rm I_{total} = \frac{12}{60} \\\\ I_{total} = 0.20 \ A[/tex]
Hence, the magnitude of the circuit current is 0.20 A.
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find the fundamental unit of density.
Answer:
The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth's density is 5.51 grams per cubic centimetre.
Explanation:
to verify the law of solid friction project work of physics
Cesium has 37 isotopes, the most of any element on the periodic table. One of Cesium's most stable isotopes undergoes beta decay to form Barium-135. Which of the following is the correct isotopic notation for the original Cesium isotope before it decayed?
Cesium has 37 isotopes. One of Cesium's most stable isotopes undergoes beta decay to form Barium-135. 135 Cs 55 is the correct isotopic notation for the original Cesium isotope before it decayed.
What is beta decay?Beta decay is a radioactive decay in which a proton is converted into a neutron or vice versa inside the nucleus of the radioactive sample.
In beta decay, an electron is ejected which increases the atomic number.
135Cs55 ⇒135Ba56 + 0e-1
Cesium Barium beta particle
Thus, 135 Cs 55 is the correct isotopic notation for the original Cesium isotope before it decayed.
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What is the law of conservation of mass? A. the law that states that matter can be created but not destroyed. B. the law that states that matter cannot be created or destroyed. C. the law that states that matter can not be created but can be destroyed.
Answer:
The answer is B
Explanation:
hope it helps :)
PLEASE ANSWER AS SOON AS POSSIBLE
THANKS :)
Answer:
A is core
B is convection zone
C is photosphere
D is Chromosphere
Explanation:
Subject- Science 6th grade
please help with my hw. Thank you!
The 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface
The charge on the particle when the 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface is 2.89×10⁻⁵ nC.
How to find the point charge due?The point charge can be found using the following expression.
[tex]q=\dfrac{Vr}{K}[/tex]
Here, V is the potential of a point charge, r is the distance and K is the coulombs constant.
This equation can also be given as,
[tex]r=K\dfrac{q}{V}[/tex]
The 4000 V equipotential surface is 26.0 cm farther from a positively charged particle than the 5000 v equipotential surface. For this case, the distance at both point is,
[tex]r_1=K\dfrac{q}{V_1}\\r_2=K\dfrac{q}{V_2}[/tex]
Subtract both the distance which is equal to 26 cm.
[tex]r_1-r_2=K\dfrac{q}{V_1}-K\dfrac{q}{V_2}\\26=Kq(\dfrac{1}{V_1}-\dfrac{1}{V_2})\\26=(9\times10^9)q(\dfrac{1}{4000}-\dfrac{1}{5000})\\q=2.89\times10^{-14}\rm\; C\\q=2.89\times10^{-5}\rm\; nC[/tex]
Thus, the charge on the particle when the 4000 v equipotential surface is 26. 0 cm farther from a positively charged particle than the 5000 v equipotential surface is 2.89×10⁻⁵ nC.
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NEED HELP ASAP PLEASE!
The primary coil of a transformer has 1,000 turns of wire, and its secondary coil has 2,000 turns of wire. The input voltage is 140 V. What is the output voltage of the transformer?
Answer:
Here is the solution hope it helps:)
Answer:
280v
Explanation:
What number and type of hybrid orbital(s) form(s) when one p and one s atomic orbital mix?
Two equivalent hybridized orbitals will form from the mixing of one s-orbital and one p-orbital, that is (sp) orbital.
What are orbitals?Orbital is the place around nucleus where mostly the electrons are present. There are four types of orbitals are present, s, p, d, and f.
The orbitals that are formed by the mixing of these orbitals are called hybrid orbitals.
Thus, two equivalent hybridized orbitals will form from the mixing of one s-orbital and one p-orbital, that is (sp) orbital.
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A 800hz tuning fork is vibrating, producing a sound wave in the air.
what is the frequency of the sound wave?
800 hz
what is the speed of the sound wave?
what is the wavelength of the sound wave?
Answer:
The frequency of the sound wave is 800Hz
The speed of sound in a is about 340m/s.
Velocity = frequency x wavelength
making wavelength the subject formula
wavelength = Velocity/frequency.
wavelength = 340/800
wavelength = 0.425m.
It makes no difference how many coils of wire there are, the same amount of voltage is produced with any number of coils.
True or false
The given statement is false. Because the induced emf is dependent on the number of coil.
What is Faraday law of electromagnetic induction?According to Faraday's law of electromagnetic induction the rate of change of magnetic flux link with coil is responsible for generating emf in the coil result in the flow of amount of current .
So in order to increase the current we need to increase the EMF;
so we can increase it by;
1) Increasing the number of turns
2) Increase the area of the loop
3) By moving the magnet faster
Hence, the given statement is false.
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A pulley system is used to lift an object. Which factor could affect the efficiency of the system? (1 point)
O the mass of the person pulling
O the distance the weight is lifted
O the friction of the individual pulleys
O the mass of the object
Answer:
the distance the weight is lifted
Explanation:
When is static electricity most noticeable and why.
Answer:
You've probably noticed that static electricity is more noticeable during the winter months. This is because the air is very dry. In the summer, the humidity and moisture in the air help electrons move more quickly, which makes it harder to build up a big static charge.
Explanation:
Acceleration depends on which two factors?
Answer:
a = (V2 - V1) / t equation defining acceleration
Acceleration depends on velocity change and the time interval involved.
What is the equivalent capacitance of the three capacitors in the figure (figure 1)?
The equivalent capacitance of the combination is [tex]\dfrac{1}{C} = \dfrac{1}{C_1}+\dfrac{1}{C_2}[/tex] where C1 and C2 are the capacitance of both capacitors in series.
What is equivalent capacitor?Let the capacitance of both capacitors be C1 and C2. For a series connected capacitors, same charge flows through the capacitors but different voltage flows through them.
Let Q be the amount of charge in each capacitors,
V be the voltage across each capacitors
C be the capacitance of the capacitor.
Using the formula Q = CV where V = Q/C... (1)
For the large capacitor with capacitance of the capacitor C1,
[tex]Q = C_1V_1;[/tex]
[tex]V_1 = \dfrac{Q}{C_1}...(2)[/tex]
where [tex]V_1[/tex] is the voltage across [tex]C_1,[/tex]
For the small capacitor with capacitance of the capacitor [tex]C_2[/tex],
[tex]Q = C_2V_2[/tex];
[tex]V_2 = \dfrac{Q}{C_2} ... (3)[/tex]
where [tex]V_2[/tex] is the voltage across [tex]C_2[/tex],
Total voltage V in the circuit will be;
[tex]V = V_1+V_2... (4)[/tex]
Substituting equation 1, 2 and 3 in equation 4, we have;
[tex]\dfrac{Q}{C} = \dfrac{Q}{C_1} +\dfrac{ Q}{C_2}[/tex]
[tex]\dfrac{Q}{C} = Q({\dfrac{1}{C_1}+\dfrac{1}{C_2})[/tex]
Since change Q is the same for both capacitors since they are in series, they will cancel out to finally have;
[tex]\dfrac{1}{C} = ({\dfrac{1}{C_1}+\dfrac{1}{C_2})[/tex]
This gives the equivalent capacitance of the combination.
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