E = sigma/2 * epselon naught
E = 300 * 10^-9/(2 * 8.854 * 10^-12)
E = 1.7 * 10^4 N/C
Assuming that the electric field is uniform all across the surface:
Then, Electric flux = E * A
Electrix flux = 1.7 * 10^4 * 15 = 2.5 x 10^5 Nm^2/C
It should be b)
The electric flux through the given area of the conductor is
2.26 x 10³ Nm²/C.
Surface charge density of the conductor, σ = 300 x 10⁻⁹ C/m²
Area of the conductor, A = 15 m²
The equation for surface charge density is,
σ = q/A where q is the charge in the conductor.
So,
Charge, q = σ A
q = 300 x 10⁻⁹/15
q = 2 x 10⁻⁸C
Therefore,
Electric flux through the conductor, Φ = q/ε₀
Φ = 2 x 10⁻⁸/8.85 x 10⁻¹²
Φ = 2.26 x 10³ Nm²/C
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Select the correct answer
Alight wave travels at a speed of 3.0 x 108 meters/second. If the wavelength is 7.0X107 meters, what is the frequency of the wave?
Answer:
[tex]f= 3.0 \times 10 {}^{8} \div 7.0 \times 10 {}^{7} \\ f = 4.28hz[/tex]
Given
Infer Which of the following is NOT true of gravitational force?
Answer:
I think it's a repulsive force
Find the magnitude of the sum
of these two vectors:
5.00 mA,
30.0°
B4
6.00 m
magnitude (m)
Answer:
Approximately [tex]3.01\; \rm m[/tex].
Explanation:
Decompose each vector into the sum of two vectors: a horizontal one (parallel to the arrow that points to the right) and a vertical one (parallel the arrow that points upwards.)
Vector [tex]\sf A[/tex] is horizontal and is at an angle of [tex]0^\circ[/tex] with the horizon.
Horizontal component of vector [tex]\sf A[/tex]: to the right, with a length of [tex]5.00\; \rm m \cdot \cos\left(0^\circ \right) = 5.00\; \rm m[/tex].Vertical component of vector [tex]\sf A[/tex]: [tex]5.00\; \rm m \cdot \sin\left(0^\circ \right) = 0\; \rm m[/tex].Vector [tex]\sf B[/tex] is at an angle of [tex]30^\circ[/tex] below the horizon.
Horizontal component of vector [tex]\sf B[/tex]: to the right, with a length of [tex]\displaystyle 6.00\; \rm m \cdot \cos\left(30^\circ \right) = (6.00\; \rm m) \times \frac{\sqrt{3}}{2}\approx 5.19615\; \rm m[/tex].Vertical component of vector [tex]\sf B[/tex]: downwards, with a length of[tex]\displaystyle 6.00\; \rm m \cdot \sin\left(30^\circ \right) = 6.00\; \rm m \times \frac{1}{2} = 3.00\; \rm m[/tex].Calculate the sum of vector [tex]\sf A[/tex] and vector [tex]\sf B[/tex].
The horizontal component of vector [tex]\sf A[/tex] and vector [tex]\sf B[/tex] are opposite to one another. Therefore, the length of the horizontal component of [tex]\sf (A + B)[/tex] would be the difference between the length of the horizontal components of vector [tex]\sf A\![/tex] and of vector [tex]\sf B\![/tex]:
[tex]\displaystyle (6.00\; \rm m) \times \frac{\sqrt{3}}{2} - 5.00\; \rm m \approx 0.196152\; \rm m[/tex].
The length of the vertical component of vector [tex]\sf A[/tex] is [tex]0\; \rm m[/tex]. Therefore, the length of the vertical component of [tex]\sf (A + B)[/tex] would be equal to the length of the vertical component of vector [tex]\sf B[/tex], [tex]\displaystyle 6.00\; \rm m \times \frac{1}{2} = 3.00\; \rm m[/tex].
Therefore, the length of the horizontal and vertical component of [tex]\sf (A + B)[/tex] are approximately [tex]0.196152\; \rm m[/tex] and [tex]3.00\; \rm m[/tex], respectively. The length of vector [tex]\sf (A + B)\![/tex] would be approximately:
[tex]\displaystyle \sqrt{(0.196152\; \rm m)^{2} + (3.00\; \rm m)^{2}} \approx 3.01\; \rm m[/tex].
What are 4 ways individuals can influence the government?
What unit of measure is used to measure temperature?
a. Joules
b. Fahrenheit
c. Meters
d. Liters
Answer:
B. Fahrenheit measures temperature!
Examine the diagram of a cell.
Which organelle is marked with an X?
cell membrane
mitochondrion
nucleus
ribosome
Answer:
It is the Nucleus
Answer:
Nuclease
Explanation:
6. A basketball player is 6 ft 10.5 in tall. What is his height in centimeters?
Answer:
19.5 is answer Dee oo w e je e8 d c hehe udhdhd r
The height of the basketball player which is 6 ft 10.5 inches will be 209.55 centimeters.
What is Unit conversion?A unit conversion expresses the same property as a different unit of the measurement of a quantity. For instance, the time can be expressed in the units of minutes instead of hours, while the distance can be converted from miles to kilometers, or feet, or any other measure of length.
1 ft = 30.48 cm
6 ft = 182.88 cm
1 inch = 2.54 cm
10.5 inch = 26.67 cm
Therefore, the total height in unit of centimeters will be (182.88 + 26.67) will be 209.55 centimeters.
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Imagine a negative test charge sitting at the coordinate origin (0,0). Two bunches of positive charges are located on the x-axis and the y-axis, respectively, so that the vectors of the respective electric forces, which the test charge experiences, point from the origin at points (1,0) and (0,1), respectively. The total force vector, which the test charge experiences, points from the origin at the point __________
Answer:
the total force vector, on test charge is points from origin to point C( 1, 1 )
Explanation:
Given the data in the question, as illustrated in the image below;
from the Image, OA = 1, OB = AC = 1
so using Pythagoras theorem
a² = b² + c²
a = √( b² + c² )
so
OC = √( OB² + AC² )
we substitute
OC = √( OA² + AC² )
OC = √( 1² + 1² )
OC = √( 1 + 1 )
OC = √2
Coordinate of C( 1, 1 )
Hence, the total force vector, on test charge is points from origin to point C( 1, 1 )
A truck covers 40.0 m in 7.40 s while uniformly slowing down to a final velocity of 2.85 m/s.
(a) Find the truck's original speed.
(b) Find its acceleration.
Answer:
Summary
Motion in one dimension
Reading Quiz
Class Quiz
Kinematic equations
Picture (508x368, 5.6Kb)
Example #1
Example #2
Graphs of motion applet
constant speed
constant acceleration
vectors & graphs applet
graphical analysis applet
Example #3
Example #4
Self-quiz applet
Interactive Example 2-9
An ant is crawling on the sidewalk. At one moment, it is moving south a distance of 5.0 mm. It then turns southwest and crawls 4.0 mm. What is the magnitude of the ant’s displacement?
A) 8.3mm
B) 8.3cm
C) 8.3m
D) 8.3km
The correct answer is (A) 8.3mm.
The total displacement will be the vector sum of the two displacements given in the question.
let the displacement to the south represent vector A = 5mm in magnitude directed toward south.
let the displacement to the south-west represent vector B = 4mm in magnitude directed toward south-west.
The angle between vector A and vector B is 45°, the angle between south and south-west.
SO the resultant
R = vectro A + vector B
[tex]R=\sqrt{A^{2}+B^{2}+2ABcos(45) } \\\\R=\sqrt{25+16+40*\frac{1}{\sqrt{2} } } \\\\R=8.3mm[/tex]
The ant's displacement is 8.3 mm in magnitude.
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Can you answer these questions would mean so much grades are due next week and im just really busy will give 35 points
Answer:
C.) X-Rays
B.) Focus
A.) Laser
B.) 38 x 10^-16 Joules
The law of universal gravitation states that any two objects in the universe, without exception,
a
repel each other
b
attract each other
c
create friction
Answer:
attract each other
Explanation:
..........
Whenever a body is in motion there is always a ____ to oppose the motion
A. Friction
B. Intertia
C. Gravity
D. acceleration
Whenever a body is in motion there is always a friction to oppose the motion.
What is friction ?"Friction is a force that resists the motion of one object against another."
Friction is a force that opposes relative motion between surfaces in contact. One of the simpler characteristics of friction is that it is parallel to the contact surface between surfaces and always in a direction that opposes motion or attempted motion of the systems relative to each other.
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Which of Newton’s laws explains why a satellite continually orbits the earth and does not fall into the ground?
1st
2nd
None
3rd
Answer:
Newtons 1st law of inertia
Explanation:
Explanation:
probably the 1st law of motion, it'll continue at in a straight line as long as no external force is added or the net force equals to zero, same for the centrifugal force and the gravitational force
Lithium (chemical symbol Li) is located in Group 1, Period 2. Which is lithium most likely to be? O A. A soft, shiny, highly reactive metal OB. A soft, shiny, highly reactive nonmetal O C. A gaseous, highly reactive nonmetal O D. A metalloid with properties of both metals and nonmetals SUBMIT
Answer:
A. A soft, shiny, highly reactive metal
Explanation:
Lithium is located in Group 1, Period 2. lithium is most likely to be soft, shiny, highly reactive nonmetal. Hence option A is correct.
What is Atom ?Atom is smallest entity of a body. Body is made up of atoms. it is basic building block of a body. An atom consist of electrons, protons and neutrons as sub atomic particle. whole mass of the atom is concentrated at the center of the atom which we call it as nucleus, nucleus consist of proton and neutron. Electron revolve around the nucleus at determined(fixed) orbit. Total number of protons in the atom decides the atomic number and the elements in the periodic table.
The electrons which are completely filled orbitals are called as core shell electrons and which are not filled completely are called as valence electron. valence electrons are responsible for physical and chemical properties of the element. Elements which are on same column in periodic table have same number of valence electrons .
Hence option A is correct.
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Which pair of sentences is describing the same velocity?
REAL ANSWER = BRAINLIST LOOK AT PICS ATTACHED
Answer:
there are no pictures attached.
Three resistors having resistances of 1.10 .3.00
, and 5.00 are connected in series to a 26.0V battery that has negligible internal resistance.
A)
Find the equivalent resistance of the combination
Req = 9.10
B) Find the current in through 1.10 resistor
B)
Find the current in through 1.10 ?
Objects A and B both have mass 2 kg. Object A has temperature 20°C and Object B has temperature 40°C. The specific heat of Object A is larger than that of Object B. The two objects are isolated from the environment and are brought into thermal contact with each other and allowed to come to thermal equilibrium. Is the final temperature of both objects greater than, less than or equal to 30°C? Briefly explain your reasoning.
Answer:
Equal to 30°C.
Explanation:
The final temperature of both objects are equal to 30°C because of the conduction heat from one object to another. Both objects have same mass of 2 kg and both were isolated from the external environment so conduction of heat occurs from the more hotter body to the less hotter body until the temperature of both objects are equal to each other.
The final temperature of both objects is less than 30° C
What is the specific heat of an Object?
The specific heat of an object is the minimum required quantity of heat needed to raise the temperature of 1 gram of the object(substance) by 1° C.
From the parameters given:
The mass of both Object A and B = 2kgThe temperature of Object A = 20° CThe temperature of Object B = 40° CUsing the Calorimetry principle, we need to understand that the heat lost by an object at a high temperature is proportionally equal to that heat gained by the object at a low temperature.
i.e.
[tex]\mathbf{Q_{lost}= Q_{gain}}[/tex]
[tex]\mathbf{ms_B \Big[40^0 \ C - \theta_o\Big]= ms_A \Big [ \theta_o - 20^0 \ C \Big]}[/tex]
Given that:
The specific heat of object A is larger than that of object B i.e. [tex]\mathbf{S_A> S_B}[/tex]Then, let us consider a scenario where [tex]\mathbf{S_A = 1.5S_B}[/tex]
Thus;
[tex]\mathbf{S_B \Big[40^0 \ C - \theta_o\Big]= 1.5S_B \Big [ \theta_o - 20^0 \ C \Big]}[/tex]
[tex]\mathbf{40^0 \ C - \theta_o= 1.5 \theta_o - 20^0 \ C}[/tex]
[tex]\mathbf{ 2.5\theta_o= 70^0 \ C}[/tex]
[tex]\mathbf{ \theta_o= \dfrac{70^0 \ C}{2.5}}[/tex]
[tex]\mathbf{ \theta_o=28 ^0 C}[/tex]
Therefore, we can conclude that since the specific heat of object A is larger than that of object B i.e. [tex]\mathbf{S_A> S_B}[/tex], then the final temperature [tex]\mathbf{ \theta_o<30 ^0 C}[/tex]
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A 7.0kg object rests on a horizontal frictionless surface. What is the magnitude of the horizontal
force that is required to accelerate it at the rate of 2.3m/s2
?if you can show work it would be perfect
Answer:
16.1 N
Explanation:
From the question,
F = ma.............................. Equation 1
Where F = horizontal force, m = mass of the object, a = acceleration .
Given: m = 7.0 kg, a = 2.3 m/s²
Substitute this values into equation 1
F = (7.0×2.3)
F = 16.1 N.
Hence the magnitude of the horizontal force is 16.1 N
You are working as an electrical technician. One day, out in CR the field, you need an inductor but cannot find one. Look- ing in your wire supply cabinet, you find a cardboard tube with single-conductor wire wrapped uniformly around it to form a solenoid. You carefully count the turns of wire and find that there are 580 turns. The diameter of the tube is 8.00 cm, and the length of the wire-wrapped portion is 36.0 cm. You pull out your calculator to determine:
a. the inductance of the coil
b. the emf generated in it if the current in the wire increases at the rate of 4.00 A/s.
Explanation:
Given info: The Number of turns in the wire is 580 the diameter of
tube is [tex]8.00 \mathrm{~cm}[/tex] and the length of the tube up to which wire is wrapped is [tex]36.0 \mathrm{~cm}[/tex].
Formula to calculate the inductance of the coil is,
[tex]L=\frac{\mu_{0} N^{2} A}{l}[/tex]
Here,
[tex]L[/tex] is inductance of the coil.
[tex]\mu_{0}[/tex] is the permittivity.
[tex]N[/tex] is the number of turns.
[tex]l[/tex] is the length up to which wire is wrapped.
[tex]A[/tex] is the cross sectional area of the coil.
The expression for the area is,
[tex]A=\frac{\pi d^{2}}{4}[/tex]
Substitute [tex]\frac{\pi d^{2}}{4}[tex] for [tex]A[/tex] in equation (1).
[tex]L=\frac{\left(\mu_{0} N^{2}\right) \frac{d d^{2}}{4}}{l}[/tex]
Substitute 580 for [tex]N, 4 \pi \times 10^{-7}[tex] for [tex]\mu_{0}, 8.00 \mathrm{~cm}[tex] for [tex]d[tex] and [tex]36.0 \mathrm{~cm}[tex] for [tex]l .[/tex]
[tex]\begin{array}{c}
=\frac{4 \pi \times 10^{-7} \times 580 \times 580 \times \frac{x(8.00 \mathrm{~cm} \times 8.00 \mathrm{~cm})}{4}}{36 \mathrm{~cm}} \\
=5.90 \mathrm{mH}
\end{array} [/tex]
Conclusion:
Therefore, the inductance of the given single conductor wire is
[tex]5.90 \mathrm{mH} .[/tex]
Given info: The rate of increasing current [tex]4.00 \mathrm{~A} / \mathrm{s}[/tex] and the inductance of the coil [tex]5.90 \mathrm{mH}[/tex].
The generated emf is,
[tex]
\varepsilon=L \frac{d i}{d t}
[/tex]
Here,
[tex]\varepsilon[/tex] is the generated emf.
[tex]L[tex] is the inductance of the coil.
[tex]\frac{d i}{d t}[tex] is the rate of change of current.
Substitute [tex]5.90 \mathrm{mH}[tex] for [tex]L[tex] and [tex]4.00 \mathrm{~A} / \mathrm{s}[tex] for [tex]\frac{d i}{d t}[/tex]
[tex]\begin{array}{c}
\varepsilon=5.90 \mathrm{mH} \times 4.00 \mathrm{~A} / \mathrm{s} \\
= & 23.6 \mathrm{mV}
\end{array}[/tex]
Conclusion:
Therefore, the generated emf is [tex]23.6 \mathrm{mV}[/tex].
what is not a form of erosion
1) mass
2) water
3) wind
4) ice
5) gravity
Answer:
mass
Explanation:
Answer:
Mass wind water ice gravity
A body to projected horizontally with a velocity of 100m/s
from the top of a tower 200m above the ground deduce
the following
time of flight and
Range obtained
Answer:
(a) Time flight is 6.39 s
(b) The range of the projectile is 639 m.
Explanation:
Given;
initial horizontal velocity of the projectile, [tex]v_x[/tex] = 100 m/s
initial vertical velocity of the projectile, [tex]v_y[/tex] = 0
height of the tower, h = 200 m
(a) Time flight is calculated as follows;
[tex]h = v_yt + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 200}{9.8} }\\\\t = 6.39 \ s[/tex]
(b) The range of the projectile is calculated as follows;
[tex]R = v_x \times t\\\\R = 100\ m/s \ \times \ 6.39\ s\\\\R = 639 \ m[/tex]
When a man is walking exhibit which type of equilibrium?
Answer:
Dynamic equilibrium
Explanation:
This is because dynamic equilibrium is when the body is set on motion at constant velocity. When humans are walking, when achieve unstable equilibrium that is not static or dynamic on the first foot and a non equilibrium when the other foot is involved. In human movement,it is at constant velocity and the Total number of forces acting is zero. This type of equilibrium always return to it's initial point after disturbances since humans did not continually walk all the time .
As a pendulum swings from the bottom position to the top position
kinetic energy is changed into potential energy
mechanical energy is changed into radiation
radiation is changed into friction
potential energy is changed into kinetic energy
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Power and Energy.
As a pendulum swings from the bottom position to the top position, it gains a height which means it gains the Potential energy.
hence we can say that, kinetic energy is changed into potential energy.
So, the Option A.) is correct.
Answer:
I think it's A)
Explanation:
it could be wrong i don't know hope it's not good luck!
Chlorine gas (Cl2) can be produced using this equilibrium reaction involving gaseous PCl5 and PCl3. Which change would drive this process toward the product side?
PCl5 + energy ⇄ PCl3 + Cl2
A.
Decreasing the temperature
B.
Increasing the pressure
C.
Decreasing the pressure
D.
Removing the PCl5 as it forms
Answer:
C. Decreasing the pressure
Explanation:
PLS HELP ANYONE
The image below shows how cloud formation can be affected by a mountain range.
The moist air on one side of the mountain condenses to form clouds and rain. However, on the other side of the mountain, the air is cooler and drier. Which of Earth's spheres are interacting when this happens?
A. atmosphere and geosphere
B. biosphere and geosphere
C. biosphere and hydrosphere
D. atmosphere and biosphere
Answer:
hi :3
Explanation:
A jogger ran 14.8 miles in 98 minutes what is the joggers speed in miles/minutes
Answer:
6.621 minutes per mile
Explanation:
the .621 is repeating
please help me with this i dont know it
Answer:
no it would not. that is an open circuit and it would need to be closed at the switch for current to flow.
Two identical balls move at the same speed what momentum do the balls possess
At highest point above h from initial position .
And then ball B come to point A with same velocity v and after that elastic collision between A and B .
B get rest and A move with velocity v by momentum conservation .
The momentum of ball 1 is mv and momentum of the ball 2 is -mv. Therefore, option (C) is correct.
What is momentum?The momentum of an object can be explained as the function of the object's mass and object's velocity. Momentum (p) can be used to determine kinetic energy and is the multiplication of velocity (v) and mass (m).
The momentum is the vector quantity because the velocity is the vector while mass is the scalar. So the product of the vector and scalar quantity is a vector.
The momentum can be determined from the mathematical formula:
p = m×v
The momentum can be described as a conserved quantity but it can be zero if the object is stationary because the velocity of an object is zero.
The mass of both balls is 'm' but they are moving in different directions, therefore, the velocity of one ball will be 'v' while the ball will be - v. Therefore the momentum of one ball is mv and the other ball is - mv.
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