The magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29 x 10-11 m, the expected position of the electron in the atom will be a) 1012 N/C
What is electric field due to a charge ?Electric field is defined as the electric force per unit charge. The direction of the field is taken to be the direction of the force it would exert on a positive test charge.
electric field = k * q / r^2
given
distance (r) = 5.29 x 10-11 m
q of proton = + 1.602 * 10 ^ -19 C
k = 9 * 10 ^9 Nm^2 / C^2
Electric field = (9 * 10 ^9 Nm^2 / C^2 * 1.602 * 10 ^ -19 C )/ (5.29 x 10-11 m)^2
= 14.418 * 10 ^ (-10) / 27.98 * 10 ^ (-22)
= 0.5153 * 10 ^12 N/C
correct option a) 1012 N/C
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how physical science can be truth?
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still able to slide past each other.
What is most likely the phase of the substance?
gas
liquid
solid and gas
liquid and solid
Liquid substance has the most likely phase.
What is solid, liquid and gas and how they relate to the phase?Solid:
In the solids, the particles are arranged orderly and closely packed.The attractive forces between particles are very strong.Particles also gets vibrate about a fixed point.The spaces between the particles are extremely small.Liquid:
In the liquids, the particles arranged randomly but closer than gas and they are also closely packed but further apart than solids.The attractive forces between particles are strong but less than solids.Particles slide or roll over one on the another randomly.There will have some spaces but lesser than gas.Gas:
The particles in the gases are random, far apart from one another.The attractive forces are very weak.There will be no regular movement.The movement will also be freely done.Hence, the correct answer is Option B, liquid.
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The speed of sound through air is approximately 343 m/s. What is the speed in miles per hour
Answer:
At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,235 km/h; 1,125 ft/s; 767 mph; 667 kn), or a kilometre in 2.9 s or a mile in 4.7 s.
PLEASE MARK ME BRAINLIEST.Any two importance of measurement
Answer:
to sell and to buy
Explanation:
measurement is a comparison between unknown quantity with a known quantity
Grive reasons The units of force and pressure are called derived units. an
How ??
Force:-
We know
According to newtons second law
[tex]\boxed{\sf Force=Mass\times Acceleration}[/tex]
[tex]\\ \sf\longmapsto Force=kgm/s^2[/tex]
We don't use it
[tex]\\ \sf\longmapsto Force=Newton(N)[/tex]
Hence its a derived unit.
Pressure:-
[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{N}{m^2}[/tex]
[tex]\\ \sf\longmapsto Pressure=Pascal(Pa)[/tex]
Hence its a derived unit
What would make oppositely charged objects attract each other more?
o increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
O decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object
O increasing the distance between the positively charged object and the negatively charged object
O maintaining the distance between the positively charged object and the negatively charged object
Answer:
a: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
The oppositely charged objects attract each other more is option a. It increased the positive charge and the negative charge.
The Attraction of the oppositely charged:At the time when the oppositely charged objects are attracted to each other more so here the positive charge should be increased with respect to the positive charge object and the negative charge is increased with respect to the negative charge object
Hence, the first option is correct.
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A stretched rubber band has _________energy
Answer:
A stretched rubber band has potential energy
Answer:
elastic potential energy
Explanation:
List two pieces of evidence
related to this picture
Answer:
there was a crash you can tell cause of the 2 cars the dog is curious on what happened, you can tell because the dog is looking at the cash
A bicyclist steadily speeds up from rest to 6.00m/s in 7.30s.
How far did she travel during this time?
Answer:
21.899 m
Explanation:
The explanation here is a little differe because we are starting from rest. So, everyone does physics a little differently, but what I would start with is trying to find the accelaration. I've given the formula, now you are able to plug this into the displacement formula where you Velocity Initial = 0m/s (Since you are starting from rest) and V final = 6.00 m/s...
You just plug numbers into the formula after solving for accelaration and do some simple algebra! I hope this helps! I am attaching a new pdf for visuals! If you can't open it let me know! Also there is a star by accelaration because I didn't know if I spelled it right, sorry!
A car traveling at 7.5 m/s accelerates 3.8
m/s2 to reach a speed of 14.0 m/s.
How long does it take for this acceleration
to occur?
Answer:
1.71s
Explanation:
Acceleration = the change in velocity / the change in time
Or I can write it as
a = V2 - v1
- - - -----
t
V1 (initial velocity) = 7.5m/s
V2 ( final velocity) = 14.0m/s
a =3.8m/s^-2
Therefore
a= V2 - V1
- - - - - - - -
t
t = V2 - v1
- - - - - - -
a
t = 14 - 7.5
- - - - - -
3.8
t = 1.71s
can someone help me this question
Answer:
Volume of wood is 68-50 = 18 cm³
Explanation:
Hope it helps youwhat does mercaptan smell like?
Answer:
its been said that is smells like rotten eggs or rotten cabbage.
Explanation:
Depending on the makeup of your olfactory senses, Ethyl Mercaptan most often is reported to smell like rotten eggs or sometimes rotten cabbage. Some also say it has a strong garlic, or skunk-like, smell
Answer: Depending on the makeup of your olfactory senses, Ethyl Mercaptan most often is reported to smell like rotten eggs or sometimes rotten cabbage. Some also say it has a strong garlic, or skunk-like, smell.
An electron and a proton, initially at rest, are pushed by the same force. Which of the two will have greater velocity?
A) proton
B) electron
C) they will have different acceleration but the same velocity
D) the velocity of both the electron and the proton will be same.
Answer:
B electron
Explanation:
electron will have greater velocity
How do
thermal energy and
temperature differ ?
Answer:
Thermal energy adds up kinetic energy of all the molecules in it while temperature is the average kinetic energy of molecules
A shot putter puts the shot at a velocity of 14 m/s (assume this represents a constant horizontal
velocity). The shot is in the air for 1.4 seconds. How far did the shot travel?
S = (v-u)t/2
s = (14)1.4/2
s = 9.8m
The range of the shot will be "19.6 m". A complete solution is provided below.
The given values in the question are:
Horizontal velocity,
v = 14 m/s
Time,
t = 1.4 sec
Now,
The Range will be:
= [tex]Velocity\times Time[/tex]
By putting the given values, we get
= [tex]14\times 1.4[/tex]
= [tex]19.6 \ m[/tex]
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The length of a plate as measured with a ruler is 24.74 cm. The breadth as measured with a Vernier caliper is 6.78 cm. Calculate the are of the plate with exact significant figures.
The area of the plate is 167.78 centimeters.
The area of the plate can be calculated with the equation of the area of a rectangle:
[tex] A = l*w [/tex] (1)
Where:
l: is the length = 24.74 cm
w: is the width = 6.78 cm
By entering the above values into equation (1) we can find the area.
[tex] A = 24.74 cm*6.78 cm = 167.74 cm [/tex]
Therefore, the area of the plate is 167.78 centimeters.
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A force of 5000 N is applied outwardly to each end of a 5.0-m long rod with a radius of 34.0 mm and a Young's modulus of 125 x 108 N/m^2. The elongation of the rod is:
a. 0.55 mm
b. 1.42 mm
c. 0.0040 mm
d. 0.11 mm
e. 0.022 mm
Answer:
0.55 mm
Explanation:
E = σ/ε
E = (F/A) / (ΔL/L₀)
ΔL/L₀ = F/EA
ΔL = FL₀/EA
ΔL = 5000(5.0) / (125e8(π(0.034²)))
ΔL = 0.00055070914... m
With that Young's modulus our shaft may be made of strong wood such as oak or douglas fir, or possibly lead.
show that Newton's first law is the special case of Newton's second law of motion
Please find attached photograph for your answer. Please do comment whether it is useful or not.
a simple machine has efficiency 90℅ what does it mean
Explanation:
A simple machine has efficiency 90℅, it means that 90% of the applied force is used in doing useful work and 10% is wasted due to overcoming friction.
An object which starts at the origin is traveling in the positive direction with a constant velocity V. After traveling a distance D with this constant velocity, the object begins to slow down at a constant rate until it stops after traveling an addition distance of 2D. In terms of D and V, determine the average velocity of the entire trip.
Answer:
Explanation:
time to travel first leg
D = Vt₁
t₁ = D/V
time to travel second leg.
at constant deceleration, the average velocity will be half of the original.
2D = (V/2)t₂
t₂ = 4D/V
t = t₁ + t₂ = 5D/V
Vavg = d/t = (D + 2D)/(5D/V) = (3D/5D)V = 0.6V
With the concept of kinematics we find the average speed is 0.6V
given parameters
* initial velocity V
* the distances in each part of the movements x₁ = D and x₂ = 2D
to find
The average speed of the entire trajectory
In kinematics we analyze the motion of bodies, the average velocity is defined by
[tex]V_{avg} = \frac{\Delta x}{\Delta t}[/tex] 1
where [tex]V_{avg}[/tex] is the average velocity, Δx and Δt are the variation of displacement and time in the interval
For this exercise we have two types of movement in the first part a uniform movement and in the second part an accelerated movement let's solve each onaccelerated movement,e separately
1 Part. uniform motion
we look for the time
V = [tex]\frac{x_1}{t_1}[/tex]
t₁ = x₁ / V
t₁ = [tex]\frac{D}{V}[/tex]
2 Part. Accelerated movement, let's start by looking for acceleration, they tell us that the body stops at the end of the interval so its velocity is zero v_f=0, the initial velocity is v₀ = V
[tex]v_f^2 = v_o^2 - 2 \ a \ x_2[/tex]
0 = v₀² - 2 a x₂
a = [tex]\frac{v_o^2}{2x_2}[/tex]
we substitute
a = [tex]\frac{V^2}{D}[/tex]
now we look for the time it takes to stop
v = v₀ - a t₂
0 = v₀ - a t₂
t₂ = [tex]\frac{v_o}{a}[/tex]
we substitute
t₂ = [tex]\frac{V}{\frac{V^2}{4D} }[/tex]
t₂ = [tex]\frac{4D}{V}[/tex]4D / V
for the entire movement, the total displacement is
Δx = x₁ + x₂
Δx = D + 2D
Δx = 3D
the total time is
Δt = t₁ + t₂
Δt = [tex]\frac{D}{V} + \frac{4D}{V}[/tex]
Δt = [tex]\frac{5D}{V}[/tex]
we substitute in equation 1 of average velocity
[tex]V_{avg} = \frac{3D}{\frac{5D}{V} }[/tex]
[tex]V_{avg} = \frac{3}{5} \ V[/tex]
[tex]V_{avg } = 0.6 V[/tex]
With the use of the kinematics equations with constant acceleration we can find the average velocity of the body throughout the journey is 0.6V
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Write a formular to show force experienced by charge in magnetic field.
Answer:
[tex]{ \boxed{ \sf{F = Bev}}}[/tex]
Explanation:
F » Force
B » Magnetic flux density
e » magnitude of charge
v » voltage
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What is the displacement of a car traveling 14 km North on I985 then 20 km South on I985?
Displacement = (14-20) Km = -6 Km
The displacement of a car is -6 Km South
2. Determine the units of the quantity described by each of the following
combinations of units:
a. kg (m/s) (1/s)
b. (kg/s) (m/s)
c. (kg/s) (m/s)
d. (kg/s) (m/s)
We have that the unit of the quantities are described
a.kg (m/s) (1/s)=Newton
b. (kg/s) (m/s^2)=Newton
c. (kg/s) (m/s)^2=Newton
d. (kg/s) (m/s)=Newton
From the question we are give the units
a.kg (m/s) (1/s)
b. (kg/s) (m/s^2)
c. (kg/s) (m/s)^2
d. (kg/s) (m/s)
a)
Generally
kg (m/s) (1/s) is Represented as Newton
Where Newton is the unit Force and Weight
b)
Generally
(kg/s) (m/s) is the unit representation of Newton
Therefore
Newton
c)
kg/s) (m/s) is the unit representation of Newton
Therefore
Newton
d)
Generally
(kg/s) (m/s) is the unit representation of Newton
Therefore
Newton
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please help meeee its for physics....
Nothing accelerates a Projectile Horizontally during Motion...
Consequently
Horizontal Acceleration is Always Zero.
The Horizontal Velocity is always Constant too.
Only the vertical Velocity changes by -9.8ms-².
If this is so...
∆x = v'∆t + ½(0)(∆t)²
∆x = v't.
I'd go with Option D.
At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2 .
(a) How far does she travel in the next 5.00 s?
(b) What is her final velocity?
(c) Evaluate the result. Does it make sense?
Answer:
20m; -1m/s; doesn't make sense.
Explanation:
(a) v=u-at
v=9-2×5
v=-1 m/s
Now, v²=u²-2as
(-1)²=(9)²-2×2×s
4s=81-1=80
s=80/4=20m
(b) v=u-at
v=9-2×5
v=-1 m/s
(c) A runner starts the race at a velocity of 9 m/s and then decelerates at a rate of 2m/s² and her final velocity is -1m/s. This doesn't make sense because that negative final velocity means the runner is running backwards.
john doe operates a crane that can pick up 3.0 tons of excavated earth in an hour. John's wages are $35 per hour. What, then, is the cost of picking up 85kg of excavated earth?
Answer:
1
Explanation:
The temperature at which water leaves the boiler is?
Answer:
The average setting for a gas-powered hot water boiler is 180°F. This provides the appropriate level needed for most cold weather temperatures. If you can raise the temperature manually, do not set it any higher than 210°F (which is often the limit), and try to remain down at 190°F if you need the extra heat.
How many mm is 97.25cm?
Answer:
972.5 mm
Explanation:
Since there are 10 millimeters in one centimeter, we move the decimal place to the right once to convert from cm to mm.
I NEED THE ANSWER TO THIS SO I CAN GET MY PHONE BACK
A fertilized human egg cannot grow into a crocodile duck or fish because
Answer:
A fertilized human egg cannot grow into a crocodile, duck or fish specifically because of: genetic code. is a stage in reproduction whereby an egg and a sperm fuse to create a single cell.
Explanation:
Because of ; Genetic Code
