The nuclear decay equation is 
Explanation:
First of all, we look at the periodic table to see what is the atomic number of the two elements involved.
We notice that:
- The atomic number of strontium is 38
- The atomic number of yttrium is 39
This means that in the decay, a neutron from the nucleus of strontium transforms into a proton (because the atomic number, which is the number of protons, increases by 1 unit).
Therefore, this means that the decay involved is a beta-minus decay, in which a neutron converts into a proton emitting an electron (to conserve the charge) alongside an anti-neutrino.
Therefore, the balanced nuclear decay equation is:
where the mass number (94) does not change, since the number of nucleons (protons+neutrons) remains the same.
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It would be towards your side. Right hand thumb rule
Answer:
Explanation:
We are asked to find the force applied to the volleyball. According to Newton's Second Law of Motion, force is the product of mass and acceleration.
We are given the mass, but we must calculate the acceleration.
1. Acceleration
Acceleration is the rate of change of velocity with respect to change. It is the change in velocity over the time.
The volleyball starts at rest or 0 meters per second and reaches a velocity of 22 meters per second in 0.2 seconds.
= 22 m/s 
= 0 m/s - t= 0.2 s
Substitute the values into the formula.
Solve the numerator.
Divide.
2. Force
Now we know the mass and acceleration, so we can calculate the force.
The mass is 0.5 kilograms and the acceleration is 110 meters per second squared.
Substitute the values into the formula.
Multiply.
1 kilogram meter per second squared is equal to 1 Newton, so our answer of 55 kg*m/s² is equal to 55 Newtons.
<u>55 Newtons</u> of force are applied to the volleyball.
We will make the comparison between each of the sizes against the known wavelengths.
In the case of the <em>hydrogen atom</em>, we know that this is equivalent to 
m on average, which corresponds to the wavelength corresponding to X-rays.
In the case of the <em>Virus</em> we know that it is oscillating in a size of 30nm to 200 nm, so the size of the virus is equivalent to the range of the wavelength of an ultraviolet ray.
In the case of <em>height</em>, it fluctuates in a person around 
to 
m, which falls to the wavelength of a radio wave.
75km=75000m
35min=2100 seconds
Velocity=Displacement/Time
=75000/2100
=750/21
=35.71 m/s
