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Snezhnost [94]
3 years ago
6

A child has fallen while riding a bike. When should a bystander call 911 ?

Physics
2 answers:
statuscvo [17]3 years ago
5 0
C and D - bleeding is dangerous and could lead to infection while not wearing a helmet and falling could mean the kid may have got a concussion.
kari74 [83]3 years ago
4 0

Answer:

C Or D

Explanation:

The Child Should Get Checked On Before You Call The Police Thought,

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A state in which an atom has more energy than it does at its ground state.

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A robot probe drops a camera off the rim of a 278 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2 . Find the
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The mass of a basketball is three times greater than a softball. Compare the momentum’s of a softball and a basketball if they b
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3 years ago
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

q1 and q2 are the two charges

r is the separation between the two charges

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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

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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
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