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Anni [7]
3 years ago
9

Johannes Kepler started his astronomy career as an assistant to??

Physics
1 answer:
-Dominant- [34]3 years ago
8 0

The answer is Tycho Brahe.

Hope this helped you! :)

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Why must mine tailings be stored and disposed of carefully
Pachacha [2.7K]

 

Mine tailings be stored and disposed of carefully since they contain a lot of chemicals that are very toxic that leaches into aquifers, and they also runoff in the rainwater into streams and lakes.

Tailings, also called mine <span>dumps, culm dumps, slimes, tails, refuse, leach residue or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore.</span>

4 0
3 years ago
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A 1.95-nC charged particle located at the origin is separated by a distance of 0.0800 m from a 3.78-nC charged particle located
lesya692 [45]

Answer:

(a) The electrostatic force on the 3.78-nC particle is 10.35 \times 10^{-6} N along the  

    positive x axis.

(b) The electrostatic force on the 1.95-nC particle is 10.35 \times 10^{-6} N along the  

    negative x axis.

Explanation:

a.) The electrostatic force on the 3.78 nC particle is

    F_1 = \frac{Q_1 \times Q_2}{4 \pi \epsilon_0 r^2}  \hat{i}    where Q_1 is the 1.95 nC charge at the origin, and

                                        Q_2 is the 3.78 nC  charge at 0.08 m from the origin

                                         r is the distance of 0.08 between the charges

                                         \epsilon_{0} is the relative permittivity of 8.854 × 10^{-12} F/m.

Therefore F_1 = \frac{1.95 \times 10^{-9} \times 3.78 \times 10^{-9}}{4 \times \pi \times 8.854 \time 10^{-12} \times (0.08)^2}    =  10.35 \times 10^{-6} Newton in the positive x direction.

b.) The electrostatic force on the 1.95 nC particle is the same as the electrostatic force on the 3.78 nC particle except that its direction is in the negative x- axis direction.

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Observe as many moose as he can in as many locations as possible.
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jim(mass=100kg) rollerblades on a smooth horizontal floor at a constant speed of 2.0 m/s for a distance of 5m in 5 seconds. What
azamat
Since Jim's speed is constant and he is moving in a straight line, he is not accelerating, and we know the net force on him is zero. There is no Force anywhere doing any work. So no power is being added to him or dissipated by him.
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