Answers
Answer:
Force, [tex]F=2.88\times 10^{-3}\ N[/tex]
Explanation:
Charge 1, [tex]q_1=1\times 10^{-7}\ C[/tex]
Charge 2, [tex]q_2=-2\times 10^{-7}\ C[/tex]
Distance between charges, d = 0.25 m
It is required to find the force between charges. The charges are opposite the force between them is attractive. The force between charges is given by :
[tex]F=\dfrac{kq_1q_2}{d^2}\\\\F=\dfrac{9\times 10^9\times 1\times 10^{-7}\times 2\times 10^{-7}}{(0.25)^2}\\\\F=2.88\times 10^{-3}\ N[/tex]
So, the force between charges is [tex]2.88\times 10^{-3}\ N[/tex].
Related Questions
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Answers
F.
Using this formula m = =, If a car is pushed with a net force
of 5000N, resulting in an acceleration of 3.5m/s2, what is the
mass of the car?
a 1438.5kg
b 1428.6kg
c 1328.6kg
d 1421.6kg
Answers
Answer:
C
What is the answer please help her
3. Which of the following is an example of a
supplemental restraint system?
(a) air bag
(c) lap and shoulder belt
(b) safety belt
(d) antilock brakes
Answers
Answer:
A) air bag is your answer
Answer:
air bag
Explanation:
Any of several restraining systems in a vehicle, such as an airbag, in addition to the seatbelts.
What is the potential difference if a resistance of 20 ohms produces a current of 10 amperes?
Answers
Answer:
200 Volts
Explanation:
V= IR
V = 20 Ohm * 10 A = 200Volt
Potential difference V is 200 volt
Given that;Resistance R = 20 ohms
Current I = 10 Amp.
Find:Potential difference V
Computation:Potential difference V = IR
Potential difference V = 20(10)
Potential difference V = 200 volt
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HELP ASAP
this is for science, and if i get the questions right, I pass, but the teacher never taught us the lesson, idrk y. so i really need help:( Im giving away 20 points so please give me your best answers ;)
1. As an astronaut travels from the surface of Earth to a position that is four times as far away from the center of Earth, based on the Law of Gravity which of the following statement is true?
a. mass remains the same and the gravitational pull from Earth decreases
b. weight remains the same and the gravitational pull from Earth changes
c. weight increases and the gravitational pull from Earth stays the same
d. mass decreases and the gravitational pull from Earth increases
2. A satellite is sent into orbit around the Earth, In which of the following situation would the gravitational force be the greatest?
A. 1200 lb satellite orbiting 150 miles above Earth’s surface
b. 850 lb satellite orbiting 150 miles above Earth’s surface
c. 850 lb satellite orbiting 1500 miles above Earth’s surface
d. 1200 lb satellite orbiting 1500 miles above Earth’s surface
3. High and low tides are the regular pattern of rising and sinking ocean-water levels. They are caused when the sun’s gravity and the moon’s gravity pull on ocean water. The moon’s gravity has a greater effect on Earth’s oceans than the sun’s gravity. Why would the moon have a greater effect than the sun?
a. The moon has less mass than the sun.
b. The moon is closer to Earth than the sun.
c. The moon is not as hot as the sun.
d. The moon has less mass than Earth.
4. Which statement about the universality of gravity is false?
a. The gravitational force between two objects depends only on their masses.
b. Any two objects that have mass also have a force of gravity acting between them, no matter how far apart they are.
c. The gravitational force between two objects increases if the objects move closer together.
d. The gravitational force between two objects increases if mass is added to one object.
Answers
Answer:
1)a- mass never changes as you move from the earth
2)actually am not sure I haven't been taught that too
3)b
4)a-it doesn't depend only on mass but also weight
What is the speed of a high-speed electron traveling at right angles to a 0.80-tesla magnetic field with a force of -7.5 x 10^-12 newtons? The charge of an electron is 1.60 x 10^-19
Answers
Explanation:
Answer:
Magnetic field, B = 0.016 Tesla
Explanation:
It is given that,
Velocity of electron, v=9.6\times 10^5\ m/sv=9.6×10
5
m/s
Magnetic force, F=2.6\times 10^{-15}\ NF=2.6×10
−15
N
Charge, q=1.6\times 10^{-19}\ Nq=1.6×10
−19
N
The magnetic force is given by :
F=qvBF=qvB
B=\dfrac{F}{qv}B=
qv
F
B=\dfrac{2.6\times 10^{-15}}{1.6\times 10^{-19}\times 9.6\times 10^5}B=
1.6×10
−19
×9.6×10
5
2.6×10
−15
B=0.016\ TB=0.016 T
So, the magnitude of magnetic field is 0.016 Tesla. Hence, this is the required solution.
Answer:
F = q v B so v = F/q B
v = -7.5 × 10-12/(-1.60 × 10-19) (0.80) = 5.9 × 107 m/s
Explanation:
1. What are three things you think of when you think of energy?
Answers
Answer:
Food, wind, water.
Explanation:
This is supposed to be a personalized question so I answered with things that can make/give energy.
Answer:
This is personal question, very interesting! Depend on who is the person, where the person is working at, how old is that person - we can have various answers.
Personally, I think first about that human and other animals needs energy to survive, that means we need to eat, to drink; The plants need energy to survive too - that is the energy from the Sun.
Secondly, the human being needs such types of energy as electricity, wind, solar energy, etc. in oder to live. Even the acient people learnt to use solar and wind and water - natural energy from the nature.
Thirdly, the human being needs spiritual energy to have a good life.
Another specific terms of energy related to physics and chemistry, and even biology - actually are not in my mind in everyday life.
Explanation:
What is the volume of this rectangular prism?
1/4cm 1/3cm 1/2cm
Answers
Answer:
1/24
Explanation:
1/4 * 1/3 * 1/2 = 1/24
Answer:
1/24
Explanation:
Balance chemical reactions: please help question attached
Answers
hope this helps!
What is the advantage of the SI unit over CGS units?
Help me ...
answer it as fast as you can...
Answers
Answer:
The advantage of the SI unit over CGS unit are:
S.I has broader base. It has seven base units and two supplementary units.S.I is metric.S.I is coherent.S.I is rational, i.e. it gives one unit for one physical quantity .e g. for energy of any type i.e, mechanical or heat or electrical.There is only one unit Joule(J) but in M.K.S system unit for mechanical energy is joule.HOPE IT WILL HELP YOU
Units of measurements
The advantage that SI unit has over CGI is that it has only one unit for each measurement
Explanation:
CGS: Also known as Gaussian units
Length is measure in cm (centimeter)
Mass is measured in g (gram)
Time is measured in s (second).
SI unit: The International System of Units
Length is measure in meter (m)
Mass is measured in kilogram (kg)
Time is measured in seconds (s)
In summary with the SI unit student do not need to store any conversion factors in memory
What is the resistance for each resistor? What is the voltage of the battery?
Answers
Answer:
Each resistor has a resistance of 10.0 ohms. The battery has a voltage of 9.0 volts.
Explanation:
edmentum
An electric motor converts electrical energy into energy.
Answers
Answer:
into mechanical energy
...........,.
Mechanical energy it’ll turn into mechanical
What of the following does NOT influence resistance? *
A.thickness of wire
B.temperature
C.material of wire
D.Number of components
Answers
Answer:
D. Number of components
Explanation:
Answer:
D. Number of components
Explanation: hope this helps :)
A 50-kg object is accelerating to the right at 10 m/s². What is the magnitude of the rightward net force acting
on it (in Newtons)?
Answers
Answer:
I'm confused did you not get an answer at all
ASAP if you Answer right I will mark the brainiest
Answers
Answer:
1. internal heat
2.none of above
3.haumea
4. its orbit is not elliptical
5.eris
6.ceres
7.is closer to sun than pluto
In a circult, a battery is used to
1. slow down current
2. conduct current
3. raise the potential of electrons
4. convert electrical energy into some other form of energy
Answers
Answer:
4. convert electrical energy into some other form of energy
What is the kinetic energy of a bicylcle with a mass of 15 kg traveling at a velocity of 3 m/s?
Answers
KE = 0.5 x mv^2
Kinetic energy equals 1/2 times mass times velocity squared.
Mass = 15kg
Velocity = 3m/s
Plug it into the formula.
KE = 0.5 x 15(3^2)
KE = 0.5 x 15(9)
Multiply the mass and velocity squared.
KE = 0.5 x 135
Then, multiply the result by 1/2 or 0.5
KE = 67.5
The kinetic energy of a bicycle that has a mass of 15kg and travels at 3m/s is 67.5J.
Answer:
67.5 J
Explanation:
Kinetic energy can be found using the following formula.
[tex]KE=\frac{1}{2}mv^2[/tex]
where m is the mass in kilograms and v is the velocity in m/s.
We know the bike has a mass of 15 kilograms. We also know the velocity is 3 m/s. Therefore, we can substitute 15 for m and 3 for v
[tex]KE=\frac{1}{2}*15*3^2[/tex]
Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.
[tex]KE=\frac{1}{2} *15*9[/tex]
Multiply 15 and 9.
[tex]KE=\frac{1}{2} *135[/tex]
Multiply 1/2 and 135
[tex]KE=67.5[/tex]
Add appropriate units. Kinetic energy uses Joules or J as the units.
[tex]KE= 67.5 Joules[/tex]
The kinetic energy of the bike is 67.5 Joules
Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "higher" to your ear?
A) The First
B) The Second
C) They will sound the same
Answers
Answer:
The second one, the higher the hertz the higher the frequency we hear
Explanation:
Traveling in circle requires a net force
Answers
Answer:
Circular motion requires a net inward or "centripetal" force. Without a net centripetal force, an object cannot travel in circular motion. In fact, if the forces are balanced, then an object in motion continues in motion in a straight line at constant speed.
Explanation:
Charge q is 1 unit of distance away from the source charge S. Charge p is four times further away. The force exerted
between S and q is ___ the force exerted between S and p.
1/4
1/16
16 times
4 times
Answers
Which of the following is NOT an important component of planning ahead?
A figuring out necessary steps
B. setting plausible limits
C. constructing an inflexible plan
D. deciding what you want to accomplish
Answers
Answer: B setting plausible limits
Explanation: because when you are planning ahead you must only think how to do the thing correctly if you do all of your steps correctly you won't have any limitations.
Answer:
The correct answer is constructing an inflexible plan. Planning is a huge part in an individual’s life and also the life of a company. Though we want to plan for everything that could possibly happen, there needs to be flexibility as situations can change. Due to the fact planning can have a positive affect on a business for future happenings, it must also have variable and flexible room incase there are changes that need to be made.
Explanation:
TRUE or FALSE? If an object moves in a circle at a constant speed, its velocity vector will be constant. Explain your answer.
Answers
When light rays appear to be coming from behind a mirror, what type of image has been formed?
A.imaginary
B.real
C.plane
D.virtual
Answers
Answer:
The answer ...........may be D.
How does planting high yield crop varieties make farming more sustainable
Answers
Answer:
The more high yield crops are planted, the more production there will be from plants.
Explanation:
High-yield plants are plants that are genetically modified or modified artificially in a way that makes farming plants more efficient. More crops grow, therefore more money.
The answer is, the more high-yield plants there are, the more efficiency there will be from farming.
Answer:
Its D
Explanation:
my options were these
A. It increases the amount of water needed
B. It keeps soil fertility from diminishing over time
C. It keeps chemicals form entering the watershed
D. It decreases the amount of land needed
Aray diagram is shown.
What does the letter red line represent?
Answers
Answer:
Red line is reflected ray.
Explanation:
According to the given figure, the blue line represent the incident ray. It strikes the surface and reflection occurs. The dotted line shows normal.
After reflecting the surface, the ray of light is reflected. Red line shows the reflected light.
In this case, the laws of reflection follows i.e. the angle of incidence is equal to the angle of reflection.
Which statement correctly describes the differences between positive and negative acceleration?
Positive acceleration describes a change in speed: negative acceleration describes no change in speed.
Positive acceleration describes no change in speed; negative acceleration describes a change in speed.
Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
Positive acceleration describes a decrease in speed negative acceleration describes an increase in speed.
Answers
negative accel.= decrease in speed
Answer: positive accel.=increase in speed
negative accel.= decrease in speed
Explanation:
What needs to be done to balance this
equation?
CHA
O2
CO2
+ 2 H20
Remove coefficient 2 in front of
H2O on the right side of the
equation
Do nothing (equation is balanced).
Add coefficient 2 to O2 on the left
side of the equation.
Change O2 to Os on the left side
of the equation
Answers
Answer:
I'm not sure, but "Add coefficient 2 to O2...". You didn't really write out the equation properly.
4. Unlike a gas, plasma can
Answers
Answer:
Unlike a gas, plasma can conduct electricity and respond to magnetism. That's because plasma contains charged particles called ions.
Answer:
a) The pressure in a traveling sound wave is given by the equation
p Pa π m x s t − − Δ = −
s x, t 6.0 nm cos kx+ 3000 rad / s t+ ( )( ) ( ) ( )
Find the (a) pressure amplitude, (b) frequency, (c) wavelength,
and (d) speed of the wave.
b) If the form of a sound wave traveling through air is
= ϕ , how much time does any given air molecule along
the path take to move between displacements s = + 2.0 nm and s = - 2.0 nm?
Solution: (a) The amplitude of a sinusoidal wave is the numerical coefficient of the sine (or
cosine) function: pm = 1.50 Pa.
We identify k = 0.9π and ω = 315 π (in SI units), which leads to f = ω /2 π = 158 Hz.
We also obtain λ = 2π/k = 2.22 m.
The speed of the wave is v = λ /k = 350 m/s.
(b) Without loss of generality we take x = 0, and let t = 0 be when s = 0. This means the
phase is φ= -π/2 and the function is s = (6.0 nm)sin(ωt) at x = 0. Noting that ω = 3000 rad/s,
we note that at t = sin-1(1/3)/ω = 0.1133 ms the displacement is s = +2.0 nm. Doubling that
time (so that we consider the excursion from –2.0 nm to +2.0 nm) we conclude that the time
required is 2(0.1133 ms) = 0.23 ms.
A charged particle is placed in a space. The particle experiences a force. What can be concluded?
A.
The space contains a magnetic field.
B.
The space contains an electric field.
C.
The space has a charge opposite to the particle's.
D.
Oppositely charged particles must be present.
Answers
Answer: A.
The space contains a magnetic field
Explanation:
A charged particle is surrounded by electric field and exerts force on other charges in the field, attracting or repelling them.
But a charged particles in a magnetic field can escape into infinity without ever stopping due to magnetic force. We can therefore conclude that the space contains a magnetic field
Answer:
Explanation:
B
A 200-kg boulder is 1000-m above the ground. what is its potential energy?
Answers
Explanation:
PE = mgz = 200 * 9.81 *1000 = 1962 KJ
A 200-kg boulder is 1000-m above the ground. 1962 KJ is its potential energy.
What is potential energy ?The term potential energy is defined as the stored energy that depends upon the relative position of various parts of a system. Because it has a potential to do work when released it is called as potential energy.
A spring has more potential energy when it is stretched. Any object that is stretched from its resting position has stored energy, so it is called potential energy.
The SI unit of electric potential is represented by volt (V), and it can also be written as Joule per Coulomb. The unit of potential energy is joules.
Potential energy = mgz
= 200 × 9.81 × 1000
= 1962 KJ
Thus, A 200-kg boulder is 1000-m above the ground. 1962 KJ is its potential energy.
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