Answer:
True
Explanation:
Scientific laws are often written as expressions that contains variables and are laws that are binding themselves.
In science, laws are natural phenomenon that draws from careful observations that holds through following a series of detailed study. Within the range of assumed parameters, a law will always hold true.
Most laws in science are denoted using mathematical variables which helps to interpret them.
The variables shows the relationship between the different parts of the law.
For example, Newton's law of universal gravitation is expressed mathematically as shown below;
F = 
where G, m and r are all variables.
G is the universal gravitation constant
m is mass
r is the distance between them.
F is the gravitational force.
Most scientific laws are often expressed in this format.
Answer:
With this information is not possible to calculate the mass.
Explanation:
This is a characteristic problem of energy conservation, where kinetic energy becomes potential energy. For this particular problem, we have the initial speed as input data. The moment the ball comes out of the cannon we have the maximum kinetic energy, as the ball goes up the ball will gain more potential energy as the ball loses kinetic energy, until the moment the ball reaches the maximum height. At the maximum height point, the ball will have its maximum potential energy while its kinetic energy is zero. In other words, all the kinetic energy that was, in the beginning, was transformed into potential energy.
In the above equation the masses are canceled and we can determine the maximum height, by means of the initial speed.
![h=\frac{0.5*v^2}{g} [m]](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B0.5%2Av%5E2%7D%7Bg%7D%20%5Bm%5D)
But the mass cannot be determined, since it would be necessary to know the value of the energy, in order to determine the value of the mass.
Let, the temperature of Sun's surface = c
So, 5c = 30, 000
c = 30,000 / 5
c = 6,000
In short, Your Answer would be 6000
Hope this helps!
Answer:
C. is responsible for sliding friction and contact forces
