Answer:
Explanation:
1+7 = 6+2 =8 -protons
1+15 = 12+4 = 16 - protons +neutrons
Answer:
C) 469 N
Explanation:
The reading on the scale corresponds to the normal reaction exerted by the scale on the person, R.
There are two forces acting on the person:
- Its weight (acting downward), equal to , where m = 60 kg is the mass of the person and g = 9.81 m/s^2 is the acceleration due to gravity
- The normal reaction of the scale, R, acting upward
According to Newton's second law, the resultant of these two forces must be equal to the product between mass and acceleration:
where we know that since the elevator is traveling downward at 2.00 m/s^2. Solving the equation for R, we find
Answer:
From 1846 to 1940 it would be about 1950
Explanation:
Answer:
Explanation:
The Newton's law in this case is:
Here, is the air temperture, C and k are constants.
We have
in
So:
And we have in , So:
Now, we have:
Applying (1) for :
Applying (1) for :
Could be 20N. I don't think it'd be zero