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Pavlova-9 [17]
3 years ago
12

Which kind of bond forms ions? ​

Physics
1 answer:
Zanzabum3 years ago
8 0

Answer:

Ionic bond

Explanation:

Hope it helps ya

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A bike, a truck, and a train—all without passengers, motors, or engines—roll down the same hill. Put the vehicles in order from
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Inez uses hairspray on her hair each morning before going to school. The spray spreads out before reaching her hair partly becau
Tamiku [17]

Answer:

7.0\cdot 10^{-13}C

Explanation:

The magnitude of the electrostatic force between two charged objects is

F=k\frac{q_1 q_2}{r^2}

where

k is the Coulomb's constant

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r is the separation between the two charges

The force is attractive if the charges have opposite sign and repulsive if the charges have same sign.

In this problem, we have:

r=0.070 cm =7\cdot 10^{-4} m is the distance between the charges

q_1=q_2=q since the charges are identical

F=9.0\cdot 10^{-9}N is the force between the charges

Re-arranging the equation and solving for q, we find the charge on each drop:

F=\frac{kq^2}{r^2}\\q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(9.0\cdot 10^{-9})(7\cdot 10^{-4})^2}{8.99\cdot 10^9}}=7.0\cdot 10^{-13}C

8 0
3 years ago
All digits shown on measuring device, plus one estimated digit, are considered_______.
vichka [17]

Significant

Explanation:

All the digits shown on a measuring device and one estimated digit are all considered to be significant.

A significant digit is a set of values that shows how precise a measurement is reported.

Measuring devices such as calculators gives their values in significant digits.

  • Non- zero digits in a measurement are always significant.
  • Zero's before a decimal are not significant. Those after a number in a decimal are significant.
  • Zero's between digits are significant.

learn more:

Significant digits brainly.com/question/2743055

#learnwithBrainly

3 0
3 years ago
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