Answer:
q = square root (4KsL³/k)
The force of extension of the spring is equal to the force of repulsion between the two like charges. Two like charges(positive or negative) would always repel each other and two unlike charges would always attract each other. This electric force between the charges is what is responsible for the stretching of the spring. The electric force causes the spring to increase in length from L to 2L. Equating these forces, that is the electric force between the charges and the elastic force of the spring and rearranging the variables gives the expression to obtain q.
Explanation:
See the attachment below for full solution.
Answer:
d)constructive interference
Explanation:
- For any two waves being equal in wavelength and in phase with each other will always lead to a constructive interference when there is a superposition of those two waves.
- Two waves being in phase means that each corresponding highs and low are aligned with each other. Their corresponding peaks occur at the same instant and at the same position.
- The two waves that are in phase can have a phase difference of one cycle i.e. 2π because after every cycle a wave repeats itself.
Answer:
a) Osmolarity measures the moles of solute per liter of solution.
Explanation:
Osmolarity is defined as the number of moles of solute that contribute to the osmotic pressure, per liter of solution, of solution. That is, the measurement of the solute concentration. The prefix "osmo-" indicates the possible variation of the osmotic pressure in the cells, which will occur when the solution is introduced into the body.
<span>We construct two triangles: ABC and CDE, where </span>
<span>A - position of of white ball </span>
<span>B - position on bumper directly above white ball </span>
<span>C - position on bumper where the 2 red arrows meet </span>
<span>D - position on bumper directly above red ball </span>
<span>E - position of red ball </span>
<span>AB = 3 ft </span>
<span>BC = x </span>
<span>CD = 5-x </span>
<span>DE = 1.8 ft </span>
<span>△ABC and △EDC are both right angled (at ∠ABC and ∠EDC respectively) </span>
<span>△ABC and △EDC have congruent angles (∠ACB and ∠ECD) </span>
<span>Therefore, △ABC is similar to △EDC </span>
<span>By similar triangles: </span>
<span>BC/DC = AB/ED </span>
<span>x/(5-x) = 3/1.8 </span>
<span>1.8x = 3(5-x) </span>
<span>1.8x = 15 - 3x </span>
<span>4.8x = 15 </span>
<span>x = 3.125 </span>
<span>So player should hit the white ball 3.125 ft to right of point B. </span>
<span>Point B is 1 ft to right of upper left corner. </span>
<span>Therefore, player should hit white ball 4.125 ft to right of upper left corner. </span>