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earnstyle [38]
3 years ago
9

PLEASE HELP 15 POINTS The electric field around a positive charge is shown in the diagram. Describe the nature of these lines. P

lease use 2 content related sentences

Physics
1 answer:
DENIUS [597]3 years ago
8 0

The field lines spread apart as we move away from the charge, and they point away from the charge

Explanation:

The electric field produced by a single-point positive charge is a radial field, whose strength is given by the equation

E=k\frac{Q}{r^2}

where

k is the Coulomb's constant

Q is the magnitude of the charge

r is the distance from the charge at which the field is calculated

There are two pieces of information given by the field lines shown in the graph:

  • The spacing between the lines gives an indication of the strength of the field: the closer to each other they are, the stronger the field. In this case, as we move away from the charge, the spacing between the lines increases, and this means that the field becomes weaker (in fact, it follows an inverse square law, E\propto \frac{1}{r^2}
  • The direction of the lines gives the direction of the electric field, which points away from the central charge. This is because the  direction of the electric field corresponds to the direction  of the force that a positive test charge would feel when immersed in the electric field: in this case, if we place a positive test charge in this field, then it would get repelled away from the central charge (remember that the electric force between two positive charges is repulsive), and therefore, the direction of the electric field is away from the central charge.

Learn more about electric field:

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly

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While john is traveling along a straight in interstate highway, he notices that the mile marker reads 242 mm. John travels until
Tresset [83]

Complete Question

While john is traveling along a straight in interstate highway, he notices that the mile marker reads 242 km. John travels until he reaches the 147 km marker and then retraces his path to the 161 km marker. What is John's resultant displacement from the 242 km marker? How far has he traveled answer in units of km

Answer:

The resultant displacement \Delta x _{1 , 3} = 81 \ km

The total distance traveled by john is  x_t =109 \  km

Explanation:

From the question we are told that

      The first position of john from the finish point   is x_1 =  242 \  km

       The second position of john from the finish point is   x_2 =  147 \ km

        The third position of john from the finish point is x_3 =  161 \  km

Generally the displacement from the 242 km  marker is mathematically represented as

          \Delta x _{1 , 3} =  x_1 - x_3

Here we used x_3 instead of  x_2 because x_3 is further than x_2 from the finish point

=>       \Delta x _{1 , 3} = 81 \ km

Generally the total distance traveled by John is  mathematically evaluated as

         x_t =  [x_1 - x_2 ] + [x_3 - x_2]

=>       x_t =  [242  - 147 ] + [161 - 147]

=>       x_t =109 \  km

   

8 0
3 years ago
A spring scale hung from the ceiling stretches by 5.6 cm when a 2.0 kg mass is hung from it. the 2.0 kg mass is removed and repl
k0ka [10]
When the mass of 2.0 kg is attached to the spring, the force applied to the spring is the weight of the mass, so
F_1 = m_1 g =(2.0 kg)(9.81 m/s^2)=19.62 N
This force stretches the spring by \Delta x_1 = 5.6 cm=0.056 m, so we can use Hook's law to find the spring constant:
k= \frac{F_1}{\Delta x_1}= \frac{19.62 N}{0.056 m}=350.4 N/m

Then the mass of 2.0 kg is removed and replaced with another mass m2=2.7 kg. The force produced by this mass is equal to its weight:
F_2 = m_2 g =(2.7 kg)(9.81 m/s^2)=26.5 N
And so, we can use again Hook's law to calculate the new stretch of the spring:
x_2= \frac{F_2}{k}= \frac{26.5 N}{350.4 N/m}=0.076 m=7.6 cm
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3 years ago
A rectangular squeeze film bearing will be used to absorb intermittent loads. The bearing is 500mm wide. The initial gap between
Anna71 [15]

Answer:

300 yeet

Explanation:

6 0
4 years ago
Plz help
Dominik [7]

The answer is             D. All of the above

When we draw a graph, we represent the Dependent Variable on the Y-axis and the Independent Variable on the X-axis. The graph is then named in the format "Y-variable vs X-variable". In this case Y-variable = mpg and X-variable = speed of car.

Independent Variable simply means that we can freely change that variable and observe how the Dependent Variable changes. So, here the speed of the car is being changed on a straight flat road and its effect on mpg is being studied.

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3 years ago
A pure substance has a/an
Evgesh-ka [11]

Answer:

Element or a compound.

Explanation:

6 0
4 years ago
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