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3 years ago

14

.7 Quiz 1

1 answer:

never [62]3 years ago

4 0

Answer: B> more relevant evidence

Explanation:

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Read 2 more answers

Two stationary positive point charges, charge 1 of magnitude 3.05 nC and charge 2 of magnitude 1.85 nC, are separated by a dista

luda_lava [24]

To solve this problem we will apply the concepts related to voltage as a dependent expression of the distance of the bodies, the Coulomb constant and the load of the bodies. In turn, we will apply the concepts related to energy conservation for which we can find the speed of this

$V = \frac{kq}{r}$

Here,

k = Coulomb's constant

q = Charge

r = Distance to the center point between the charge

From each object the potential will be

$V_1 = \frac{kq_1}{r_1}+\frac{kq_2}{r_2}$

Replacing the values we have that

$V_1 = \frac{(9*10^9)(3.05*10^{-9})}{0.41/2}+\frac{(9*10^9)(1.85*10^{-9})}{0.41/2}$

$V_1 = 215.12V$

Now the potential two is when there is a difference at the distance of 0.1 from the second charge and the first charge is 0.1 from the other charge, then,

$V_1 = \frac{(9*10^9)(3.05*10^{-9})}{0.1}+\frac{(9*10^9)(1.85*10^{-9})}{0.41-0.1}$

$V_2 = 328.2V$

Applying the energy conservation equations we will have that the kinetic energy is equal to the electric energy, that is to say

$\frac{1}{2} mv^2 = q(V_2-V_1)$

Here

m = mass

v = Velocity

q = Charge

V = Voltage

Rearranging to find the velocity

$v = \sqrt{ \frac{2q(V_2-V_1)}{m}}$

Replacing,

$v = \sqrt{ \frac{-2(1.6*10^{-19})(328.2-215.12)}{9.11*10^{-3}}}$

$v = 6.3*10^6m/s$

Therefore the speed final velocity of the electron when it is 10.0 cm from charge 1 is $6.3*10^6m/s$

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3 years ago

A child pulls a wagon at a constant velocity of 4.0 m/s for 4.0 minutes along a level sidewalk. The child does this applying a 2

natita [175]

Answer:

288kj

Explanation:

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nlexa [21]

Answer:

By using Pythagoras Formula

Explanation:

Measure the distance man is sliding. “It will be c”

Measure the distance of between the tower and a post with which wire is attached. It will be “b”

Then apply Pythagoras Formula c2=a2 + b2 and solve it.

It will give the height of tower.

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3 years ago

Help me please with science

Simora [160]

Answer:its b

Explanation:

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