It is a very reactive metal with 11 protons ,12 neutrons, 11 electrons, and 1 valence electron
Answer:
Your tracker will detect your arm movement and will interpret it as steps so this is what it likely happening. Something similar happens while driving, if you go through a bumpy road or your car has a stiff suspension then this can cause the tracker to detect movement and count it as steps. Usually while driving and if you notice some vibration on your car or steering wheel you can try having your tracker a little bit more tight around your wrist and this will help decrease the amount of steps detected.
Explanation:
(Via AlvaroFitbit)
Answer:
A = 2.26 m
Explanation:
Given that,
The total mechanical energy of the block spring system is 512 J
Let the spring constant, k = 200 N/m
We need to find the amplitude for this oscillation. The mechanical energy of the spring mass system is given by :

k is spring constant

So, the amplitude of the oscillation is 2.26 m
<span>The cold protective response may be activated when a person's face is submerged in water that is less than
68 degrees fahrenheit. </span>When a person suddenly drowns in a cold water, immediate
numbness occurs which can cause shock and panic. And because you are shocked
with what just happened, you feel that everything is going numb which can
result to muscle strain and ineptness of the joint. When a person tries to
grasp for air, it is water that comes in not air because everything is going
numb. After a person feels numb, he will suffer for hypothermia. If nobody can
rescue that person, he may become out cold and can die.
<h2>The velocity of car was m m/s </h2>
Explanation:
When the car skids , its centripetal force is provided by frictional force .
Here centripetal force F = 
here v is the velocity of car and r is the radius of the curve .
The frictional force f = μ R
here μ is the coefficient of kinetic friction and R is normal reaction
Thus f = m g
On horizontal road R = mg
Thus F = f at the time of skid .
Thus v = 
=
= 9 m/s