Which type of electromagnetic wave is used for warming, photosynthesis in plants, and making vitamin D in humans? UV wave Radio
1 answer:
You might be interested in
Answer:
Explanation:
From the question we are told that
Mass of pitcher
Force on pitcher
Distance traveled
Coefficient of friction
a)Generally frictional force is mathematically given by
Generally work done on the pitcher is mathematically given as
b)Generally K.E can be given mathematically as
Therefore
c)Generally the equation for kinetic energy is mathematically represented by
Velocity as subject
Answer:
Explanation:
First of all, let's remind that:
- The kinetic energy of an object is given by , where m is the mass and v is the speed
- The momentum of an object is given by
- The inertia of an object is proportional to its mass, so we can write , where k just indicates a constant of proportionality
In this problem, we have:
- (the two objects have same kinetic energy)
- (A has three times the momentum of B)
Re-writing both equation we have:
If we divide first equation by second one we get
And if we substitute it into the first equation we get
So, B has 9 times more mass than A, and so B has 9 times more inertia than A, and their ratio is: