Answers
Answer:
East
Explanation:
Electric fields point in the direction of decreasing potential. If there is only one negative charge, the most negative spot would be directly where the charge is. If we measure the electric field to its west, the field would be pointing to the charge, which is to that point's east.
At a position directly west of a negative charge, the electric field point towards the east. So, option C.
What is meant by electric field ?The electric force exerted per charge at a given place in space is known as the electric field E.
Charged particles can interact with one another, that means they attract or repel each other even when they are not in contact.
Electric fields are referred to as being produced by charged particles. Also used as electric field probes are charged particles. Charged particles are pulled by an electric field.
A charged particle's ability to exert an electric force per unit positive charge on another charged particle at a point is determined by the strength of the electric field E that particle produces there.
An electric field exerts a force on a positive charge in a particular direction. The electrostatic force acting on an object having charge q is given by,
F = qE
Hence,
At a position directly west of a negative charge, the electric field point towards the east. So, option C.
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Related Questions
A car covers 50m in 3 minutes 60m in 2 minutes ,70 in 1 minutes calculate it's average velocity
Answers
Answer:
please put formula which is A.V= s/t where A.V is average velocity, s is distance or displacement and t is time
Answer:
0.722224 m/s
Explanation:
First we need to solve for speed.
Speed = distance/time
We know that velocity is measured in m/s so we plug that in.
We'll define our first velocity as v1 and our second as v2.
Using the formula, we first calculate v1.
Speed = 50m/3min
v1 = 0.277778 m/s
Now we just set that number aside and calculate for v2.
v2 = 1.16667 m/s
Now we have both velocities defined as v1 & v2 we can calculate the average.
So our answer is
(0.277778+1.16667)/2 = 0.722224 m/s
An atom has at least one positive proton and at least one negative electron. Which of the following is true about the protons and electrons in an atom? A. Protons and electrons are far apart with lots of empty space in between. B. Protons and electrons are stuck together in neutral pairs. C. Protons and electrons are mixed together in a cloud. D. Protons and electrons orbit close together around a central nucleus.
Answers
Answer:
A. True
B. False
C. False
D. False
Answer:
A
Explanation:
protons and electrons are far apart with lots of empty space in between.
the autor mentions that shine made several mistakes in her experiment. describe one Major mistake that shine made. support your description whit details from the text
Answers
Shine misunderstood how energy is produced in plants versus how it’s produced in humans.
What is energy?The energy is the ability to do work.
Shine was incorrect about the fact that plants produce their food by absorbing sunlight. They look green due to the presence of chlorophyll. She thought that to produce energy and convert this into human is also done by chloroplast.
While sunlight does indeed contain energy, only plants are able to use and convert this energy into a usable form.
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The energy transferred between objects that are at different temperatures
Heat
Heat
Temperature
Temperature
Thermal Energy
Thermal Energy
Pressure
Pressure
Answers
Answer:
We learned in the previous section that temperature is proportional to the average kinetic energy of atoms and molecules in a substance, and that the average internal kinetic energy of a substance is higher when the substance’s temperature is higher.
If two objects at different temperatures are brought in contact with each other, energy is transferred from the hotter object (that is, the object with the greater temperature) to the colder (lower temperature) object, until both objects are at the same temperature. There is no net heat transfer once the temperatures are equal because the amount of heat transferred from one object to the other is the same as the amount of heat returned. One of the major effects of heat transfer is temperature change: Heating increases the temperature while cooling decreases it. Experiments show that the heat transferred to or from a substance depends on three factors—the change in the substance’s temperature, the mass of the substance, and certain physical properties related to the phase of the substance.
The equation for heat transfer Q is
Q = mcΔT,
Explanation:
pls brainliest
You throw an 8.75 g coin straight up into the air. The coin travels a distance of 776 cm upward.
What was the initial speed of the coin when you released it? Give your answer in units of m/s
and assume the coin is in free fall while it is in the air
Answers
Answer:
halo
Explanation:
good bye
Air trapped inside a single-piston-cylinder exerts a pressure of 760 mmHg. If its volume is increased by 20% at a constant temperature, the pressure exerted would be equal to
Answers
he change in the pressure of the air trapped in the cylinder if its volume is increased by 20% at a constant temperature is 745 mmHg.
What is the change in the pressure of the air trapped in the cylinder?The change in the pressure of the air trapped in the cylinder if its volume is increased by 20% at a constant temperature is calculated from Boyle's law equation as follows:
The Boyle's law equation is given as follows:
P₁V₁ = P₂V₂
where;
P₁ is the initial pressure
V₁ is the initial volume
P₂ is the final pressure
V₂ is the final volume
From the data given,
P₁ = 760 mmHg
V₁ = V
P₂ = ?
V₂ = V + 0.2 V
V₂ = 1.02 V
P₂ = 760 * V / 1.02 V
P₂ = 745 mmHg
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What type of atomic radiation will most deeply penetrate matter?
Multiple Choice
Beta radiation
Gamma radiation
Alpha radiation
Answers
Gamma rays can be emitted from the nucleus of an atom during radioactive decay. They are able to travel tens of yards or more in air and can easily penetrate the human body. Shielding this very penetrating type of ionizing radiation requires thick, dense material such as several inches of lead or concrete.
Highschool Physics
1. The driver of a car traveling at 9.0m/s is honking their horn. The horn has a frequency of 625 Hz. If the car is moving toward a person waiting at the crosswalk, what frequency of the horn does the person hear?
2. As the same car from question#1 passes the person, what frequency of the horn does the person hear as the car moves away from them?
Answers
Using the formula for the Doppler effect:
f' = (v + vr) / (v + vs) * f
Given:
Source frequency (horn): f = 625 Hz
Speed of sound: v = 343 m/s (approximate value at room temperature)
The velocity of the receiver, vr, is zero because the person waiting at the crosswalk is stationary.
The velocity of the source, vs, is the speed of the car, which is given as 9.0 m/s.
Thus:
f' = (v + vr) / (v + vs) * f
= (343 m/s + 0) / (343 m/s + 9.0 m/s) * 625 Hz
= (343 m/s) / (352 m/s) * 625 Hz
≈ 609 Hz
Therefore, the person waiting at the crosswalk hears a frequency of approximately 609 Hz.
(2)Using the same Doppler effect formula:
f' = (v - vr) / (v - vs) * f
In this case, the velocity of the receiver, vr, is still zero because the person remains stationary.
The velocity of the source, vs, is now negative, indicating that the car is moving away from the person.
Thus:
f' = (v - vr) / (v - vs) * f
= (343 m/s + 0) / (343 m/s - (-9.0 m/s)) * 625 Hz
= (343 m/s) / (352 m/s) * 625 Hz
≈ 609 Hz
In other words, as the car moves away from the person, they would still hear a frequency of approximately 609 Hz.
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A 35 grams bullet travels with a velocity of magnitude 126 km/h. What is the bullet's linear momentum?
Answers
The linear momentum of the bullet, given the data from the question is 1.225 Kg.m/s
What is momentum?Momentum is defined as the product of mass and velocity. It is expressed as
Momentum = mass × velocity
With the above formula, we can obtain the momentum of the bullet. Details below.
The following data were obtained from the question:
Mass of bullet = 35 g = 35 / 1000 = 0.035 KgVelocity = 126 Km/h = 126 / 3.6 = 35 m/sMomentum =?Momentum = mass × velocity
Momentum = 0.035 Kg × 35 m/s
Momentum = 1.225 Kg.m/s
From the calculation made above, we can conclude that the linear momentum of the bullet is 1.225 Kg.m/s
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When scientists look at very distant galaxies through powerful telescopes, they see the galaxies as they were millions or billions of year ago. Why is this?
Answers
Answer:
speed of light
Explanation:
the sun's light is 8 mins behind imaging that a billion fold
8. A toy train car rest on a vertical spring as shown if the springs unstretched length is 0.500 m and it has a spring constant of 90.0 N/m what is the mass of the toy train car?
Answers
We will have the following:
First, we remember that:
\(\begin{cases}F=ma \\ \\ F=-kx \\ \\ ma=-kx\end{cases}\)And we will then have:
\(m(9.8m/s^2)=-(90.0N/m)(0.350m-0.500m)\Rightarrow m=-\frac{(90.0N/m)(-0.150m)}{9.8m/s^2}\)\(\Rightarrow m=\frac{135}{98}kg\Rightarrow m\approx1.38kg\)So, the mass of the toy train car is approximately 1.38 kg.
what are the importance of informal education?
Answers
Answer:
Informal education is important because it can help individual to learn how to react and control situations.
It help individual to improve on its existing knowledge, new skills or ideas. This kind of education can happen any where and it can add values to the learner.
Explanation:
Informal education is a type of education that is learned from different life experiences, happenings outside a structured curriculum.
Informal education is important because it can help individual to learn how to react and control situations.
It help individual to improve on its existing knowledge, new skills or ideas. This kind of education can happen any where and it can add values to the learner.
PLEASE HELP!!
Which statement accurately describes a balanced force?
A 2-N force presses down on the marble at the same time as a 1.5-N force presses up on the marble.
A marble rolling downhill suddenly comes to rest at a garden wall.
A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.
A marble resting on the sidewalk suddenly begins to roll downhill without being touched.
Answers
Answer:
A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.
Explanation:
just took test
A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Balanced force is when the net force applied on the object is zero than said to be balanced.
A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.
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A 2.0 g metal cube and a 4.0 g metal cube are 6.0 cm apart, measured between their centers, on a horizontal surface. For both, the coefficient of static friction is 0.65. Both cubes, initially neutral, are charged at a rate of 7.0 nC/s .
(a) Which cube moves first?
(b) How long after charging begins does one cube begin to slide away?
Draw a Sketch of the Problem and Create a "Parameter Panel" for the Problem.
Answers
Cube moves first, that the cube which is neutral in nature. Hence, the cube which is neutral will move.
To solve this problem, we need to calculate the electrostatic force between the two charged cubes and compare it with the force of static friction between the cubes and the surface. The cube with the smaller force of friction will begin to move first. The parameter panel and sketch of the problem are shown below:
Parameter Panel:
Mass of cube 1 (m1) = 2.0 g = 0.002 kg
Mass of cube 2 (m2) = 4.0 g = 0.004 kg
Distance between the centers of the cubes (d) = 6.0 cm = 0.06 m
Charge rate of each cube (q) = 7.0 nC/s
Coefficient of static friction (μ) = 0.65
Sketch:
|-----------| |-----------|
| 2 | | 1 |
|-----------| |-----------|
| |
d=6.0 cm d=6.0 cm
| |
|-----------------|
(a) To determine which cube moves first, we need to calculate the electrostatic force between the charged cubes and compare it with the force of static friction between the cubes and the surface. The electrostatic force between two charged objects is given by Coulomb's law:
F = (k * q1 * q2) / d^2
where k is the Coulomb constant (9.0 x 10^9 N m^2/C^2), q1 and q2 are the charges on the cubes, and d is the distance between them. For each cube, the charge is increasing at a rate of 7.0 nC/s, so the charge at any time t is given by:
q = 7.0 x 10^-9 C/s * t
At t = 0, the cubes are neutral and have no charge. At some later time t, the charges on the cubes are:
q1 = 7.0 x 10^-9 C/s * t
q2 = 7.0 x 10^-9 C/s * t
The electrostatic force between the cubes is then:
F = (9.0 x 10^9 N m^2/C^2) * (q1 * q2) / d^2
= (9.0 x 10^9 N m^2/C^2) * [(7.0 x 10^-9 C/s * t)^2 / (0.06 m)^2]
The force of static friction between each cube and the surface is:
Ff = μ * N
= μ * m * g
where N is the normal force, m is the mass of the cube, μ is the coefficient of static friction, and g is the acceleration due to gravity (9.81 m/s^2).
The normal force N is the force exerted by the surface on the cube, and is equal in magnitude to the weight of the cube:
N = m * g
Plugging in the values for each cube, we get:
Ff1 = μ * m1 * g
= 0.65 * 0.002 kg * 9.81 m/s^2
= 0.0127 N
Ff2 = μ * m2 * g
= 0.65 * 0.004 kg * 9.81 m/s^2
= 0.0254 N
Comparing the electrostatic force between the cubes and the force of static friction, we find:
F - Ff1 = (9.0 x 10^9 N)
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On your vacation, you take a plane from Atlanta to San Francisco (3400 km). The flight takes 4.0 hours. The first ten minutes and the last ten minutes are spent speeding up and slowing down respectively. Therefore, you reach your top speed 10 minutes into the flight. What was your average speed on this flight?
Answers
Answer: S = 850 km/h = 235.11 m/s
Explanation:
average speed = total distance : total time elapsed
distance = 3400 km
total time = 4 hours
average speed = D : T = 3400 km : 4 h = 850 km/h
[ 850 km /h = 850 000 m : 3600 s = 236.11 m/s ]
. What is the barycenter of the Moon and Earth?
Answers
Answer:
About 1000 miles.
Explanation:
what is the formula of moment of force
Answers
Explain
M=fxd
Temperature is most closely related to molecular A) Kinetic energy. B) Potential energy. c) Electrical energy. D) Chemical energy
Answers
Temperature is most closely related to molecular Kinetic energy. Hence, option (A) is correct.
What is kinetic theory of gases ?The kinetic theory of gases is a theory that can be used to deduce many of the gas's macroscopic features from a simplified molecular or particle description of the gas.
The most basic kinetic model is predicated on the following premises:
The gas is made up of a large number of identical molecules moving in random directions, separated by distances that are large in comparison to their size. The molecules collide perfectly elastically (with no energy loss) with each other and with the container walls, but otherwise do not interact.The transfer of kinetic energy between molecules is heat. The characteristics of gases can now be mathematically treated thanks to these simplifications.Learn more about kinetic theory of gases here:
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At an uncontrolled intersection where you cannot see cross traffic until you are just about to enter the intersection, the speed limit is __________.A. 25 mph
B. 15 mph
C. 10 mph
Answers
The speed limit at an unregulated intersection is 15 mph, and you cannot detect cross traffic unless you are ready to approach the intersection.
What really is speed in physics, and what is its measure?Speed was defined as the speed at which a distance changes over time. It has a distance by time dimension. The basic unit pf distance with the basic time units are combined to form an SI unit of speed. The metric system uses meters per second as the unit of speed.
What is the secret to writing quickly?[Speed = Distance Time] is the general formula for calculating an object's speed. The SI speed unit is m/s.
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As a result of an external interference, a voltage is induced in the signal S traveling on the PROFIBUS DP bus,
which increases the voltage pulse of the bits traveling in wires A and B by +0.5 V. How does the interference
appear in the voltage of the bits read by the receiver? Justify your answer.
Answers
The interference will cause the voltage of the bits read by the receiver to be shifted by +0.5V.
What is voltage?Generally, This is because the induced voltage will add to the original signal voltage, resulting in an overall increase in the voltage level of the bits traveling on wires A and B.
This shift in voltage can potentially cause errors in the signal being received, as the receiver may interpret the higher voltage levels as a different signal or data bit.
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If two charged objects each have 2.5 C of charge on them and are located 100 m apart, how strong is the electrostatic force between them?
Answers
Answer:
5.619×10⁶ N
Explanation:
Applying,
F = kqq'/r²................... Equation 1
Where F = electrostatic force between the charges, k = coulomb's constant, q = first charge, q' = second charge, r = distance btween the charges
From the questiion,
Given: q = 2.5 C, q' = 2.5 C, r = 100 m
Constant: 8.99×10⁹ Nm²/C²
Substitute these values into equation 1
F = (2.5×2.5×8.99×10⁹)/100²
F = 56.19×10⁵
F = 5.619×10⁶ N
What tool would you use for Volume
Answers
Answer:
Volumetric cylinders and volumetric flasks are used to measure volume of liquids contained in them. They are calibrated for volume included in them - this is indicated by the marking "IN". The liquid has accurate volume when it reaches the corresponding marking on the scale. Volume is usually indicated in mL. Mark me brainliest please
12.
A hiker walks for 5km on a bearing of 053" true (North 53° East). She then turns and
walks for another 3km on a bearing of 107° true (East 17° South).
(a)
Find the distance that the hiker travels North/South and the distance that she travels
East/West on the first part of her hike.
Answers
The hiker travelled 4.02 km North/South and 4.74 km East/West during her hike.
This question involves vector addition, the resolution of vectors, the use of bearings, and trigonometry in the calculation of the hiker's movement.
This may appear to be a difficult problem, but with some visual aid and the proper use of mathematical formulas, the issue can be addressed correctly.
Resolution of VectorThe resolution of a vector is the process of dividing it into two or more components.
The angle between the resultant and the given vector is equal to the inverse tangent of the two rectangular components.
Angles will always be expressed in degrees in the solution.
The sine, cosine, and tangent functions in trigonometry are denoted by sin, cos, and tan.
The tangent function can be calculated using the sine and cosine functions as tan x = sin x/cos x. Also, in right-angled triangles, Pythagoras’ theorem is used to find the hypotenuse or one of the legs.
Distance Travelled North/SouthThe hiker traveled North for the first part of the hike and South for the second.
The angles that the hiker traveled in the first part and second parts are 53 degrees and 17 degrees, respectively.
The angle between the two is (180 - 53 - 17) = 110 degrees.
The angle between the resultant and the Northern direction is 110 - 53 = 57 degrees.
Using sine and cosine, we can calculate the north/south distance traveled to be 5 sin 57 = 4.02 km, and the east/west distance to be 5 cos 57 = 2.93 km.
Distance Travelled East/WestThe hiker walked East for the second part of the hike.
To calculate the distance travelled East/West, we must first calculate the component of the first part that was East/West.
The angle between the vector and the Eastern direction is 90 - 53 = 37 degrees.
Using sine and cosine, we can calculate that the distance travelled East/West for the first part of the hike is 5 cos 37 = 3.88 km.
To determine the net distance travelled East/West, we must combine this component with the distance travelled East/West in the second part of the hike.
The angle between the second vector and the Eastern direction is 17 degrees.
Using sine and cosine, we can calculate the distance traveled East/West to be 3 sin 17 = 0.86 km.
The net distance traveled East/West is 3.88 + 0.86 = 4.74 km.
Therefore, the hiker travelled 4.02 km North/South and 4.74 km East/West during her hike.
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does the gravitational potential energy change when the robin flew to a tree branch
Answers
Answer:
Explanation:
the gravitational potential energy does change, because it depends on distance. As a result, kinetic energy also changes throughout an orbit, resulting in a higher speed when a planet is closer to the Sun.
A toy car rolls down a ramp. Which force causes the car to move
Answers
Answer:
Gravity
Explanation:
Gravity pulls things down to earth and it is a force
How do nutritional needs change when a person increases their activity level to gain muscle mass?
Answers
When a person increases their activity level to gain muscle mass, their nutritional needs change.
How utritional needs change when a person increases their activity level to gain muscle mass?The key changes include increasing protein intake to support muscle growth and repair, consuming a slight caloric surplus to provide energy for muscle development, ensuring sufficient carbohydrate intake for fuel, including healthy fats for overall health, staying hydrated, and considering essential micronutrients.
Individual variations exist, so seeking personalized guidance from a professional is recommended.
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I get angry and throw a pen straight down to the floor. I throw it with an initial speed of 25 m/s. It took 0.25 second to fall. What is the velocity of the pen just before it hit the floor?
Answers
v2=u2+2as
v2=0×2×25×0.25
v2=25×0.25
v2=6.25m/s2
An electric generator has an 18-cmcm-diameter, 120-turn coil that rotates at 60 HzHz in a uniform magnetic field that is perpendicular to the rotation axis. Part A What magnetic field strength is needed to generate a peak voltage of 330 VV
Answers
Explanation:
OK ok nosepo \(2825.55\)The magnetic field strength is needed to generate a peak voltage is 0.287 T.
The given parameters;
diameter of the generator, d = 18 cm = 0.18number of turn, N = 120 turnfrequency of the coil, f = 60 Hzmaximum voltage in the coil emf = 330 V;The maximum voltage in the coil is calculated as follows;
\(E_{max} = NAB\omega \\\\\)
where;
N is the number of turnsA is the area of the coilB is the magnetic field strengthω is angular speedThe magnetic field strength is needed to generate a peak voltage is calculated as;
\(B = \frac{E_{max} }{NA \omega } \\\\B = \frac{E_{max} }{N (\frac{\pi d^2}{4} ) \times 2\pi f}\\\\ B = \frac{330}{120 \times (\frac{\pi \times 0.18^2}{4} ) \times 2\pi \times 60} \\\\B = 0.287 \ T\)
Thus, the magnetic field strength is needed to generate a peak voltage is 0.287 T.
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A wave has a frequency of 262x10^-9 hz what is the time interval between successive wave crest?
Answers
There are around 3.8179x10⁻⁹ seconds between the crests of each wave.
What is the formula for time frequency?The number of cycles per second is the unit of frequency in Hertz. To find the time interval for a known frequency, just divide 1 by the frequency (for example, a frequency of 100 Hz has a time interval of 1/(100 Hz) = 0.01 seconds; a frequency of 500 Hz has a time interval of 1/(500Hz) = 0.002 seconds, etc.). The wavelength is the separation between a specific location and that same location in the next wave cycle.
T = 1/f
By changing the value of f, we obtain:
T = 1 / 262x10⁻⁹ Hz
T = 3.8179x10⁻⁹ seconds
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Calculate the time required for a 6000-newton net force to stop a 1200-kilogram car initially traveling at 10 meters per second. [Show all work, including the equation and substitution with units.]
Answers
Answer:
To solve this problem, we will use the equation for the net force on an object, which is:
net force = mass x acceleration
We can rearrange this equation to solve for acceleration:
acceleration = net force / mass
Once we have the acceleration, we can use the equation for the motion of an object under constant acceleration:
final velocity^2 = initial velocity^2 + 2 x acceleration x distance
We can rearrange this equation to solve for the distance required to stop the car:
distance = initial velocity^2 / (2 x acceleration)
Finally, we can use the equation for average velocity to calculate the time required to travel this distance:
time = distance / average velocity
Substituting the given values into the equations:
net force = 6000 N
mass = 1200 kg
initial velocity = 10 m/s
Using the first equation:
acceleration = net force / mass
acceleration = 6000 N / 1200 kg
acceleration = 5 m/s^2
Using the second equation:
distance = initial velocity^2 / (2 x acceleration)
distance = 10 m/s^2 / (2 x 5 m/s^2)
distance = 10 m
Using the third equation:
average velocity = (initial velocity + final velocity) / 2
final velocity = 0 (since the car is coming to a stop)
average velocity = 10 m/s / 2
average velocity = 5 m/s
Using the fourth equation:
time = distance / average velocity
time = 10 m / 5 m/s
time = 2 seconds
Therefore, the time required for a 6000-newton net force to stop a 1200-kilogram car initially traveling at 10 meters per second is 2 seconds.