Answer:
See explanation
Explanation:
Favourite scientific discipline; Chemistry
Definition: Chemistry is the study of the composition, properties and uses of matter as well as the principles governing the changes that matter undergoes.
Source: New School Chemistry by Osei Yaw Ababio (2013)
Least Favourite Scientific Discipline: Botany
Definition: Botany is the study of plants, it includes the study of the structure and properties of plants, as well as the biochemical processes that go on in plants. It also involves the study of plant classification, plant diseases and interactions of plants with their environment.
Source: Encyclopedia Britiannica.
Answer:
No, they will not change.
Explanation:
Explanation:
1. Height Relatives to reference point, Mass, and strength of the gravitational field it's in
2. Distance in the magnetic field
Answer:
9.3m/s
Explanation:
Based on the law of conservation of momentum
Sum of momentum before collision = sum of momentum after collision
m1u1 +m2u2 = m1v1+m2v2
m1 = 8kg
u1 = 15.4m/s
m2 = 10kg
u2 = 0m/s(at rest)
v1 = 3.9m/s
Required
v2.
Substitute
8(15.4)+10(0) = 8(3.9)+10v2
123.2=31.2+10v2
123.2-31.2 = 10v2
92 = 10v2
v2 = 92/10
v2 = 9.2m/s
Hence the velocity of the 10.0 kg object after the collision is 9.2m/s
Answer:
![P = 1.090\,N](https://tex.z-dn.net/?f=P%20%3D%201.090%5C%2CN)
Explanation:
The constant speed means that ball is not experimenting acceleration. This elements is modelled by using the following equation of equilibrium:
![\Sigma F = P - W + F_{D}](https://tex.z-dn.net/?f=%5CSigma%20F%20%3D%20P%20-%20W%20%2B%20F_%7BD%7D)
![\Sigma F = P - \rho \cdot V \cdot g + c\cdot v = 0](https://tex.z-dn.net/?f=%5CSigma%20F%20%3D%20P%20-%20%5Crho%20%5Ccdot%20V%20%5Ccdot%20g%20%2B%20c%5Ccdot%20v%20%3D%200)
Now, the exerted force is:
![P = \rho \cdot V \cdot g - c\cdot v](https://tex.z-dn.net/?f=P%20%3D%20%5Crho%20%5Ccdot%20V%20%5Ccdot%20g%20-%20c%5Ccdot%20v)
The volume of a sphere is:
![V = \frac{4\cdot \pi}{3}\cdot R^{3}](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B4%5Ccdot%20%5Cpi%7D%7B3%7D%5Ccdot%20R%5E%7B3%7D)
![V = \frac{4\cdot \pi}{3}\cdot (0.014\,m)^{3}](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B4%5Ccdot%20%5Cpi%7D%7B3%7D%5Ccdot%20%280.014%5C%2Cm%29%5E%7B3%7D)
![V = 1.149\times 10^{-5}\,m^{3}](https://tex.z-dn.net/?f=V%20%3D%201.149%5Ctimes%2010%5E%7B-5%7D%5C%2Cm%5E%7B3%7D)
Lastly, the force is calculated:
![P = (8910\,\frac{kg}{m^{3}} )\cdot (1.149\cdot 10^{-5}\,m^{3})\cdot (9.81\,\frac{m}{s^{2}} )+(0.950\,\frac{kg}{s})\cdot (0.09\,\frac{m}{s} )](https://tex.z-dn.net/?f=P%20%3D%20%288910%5C%2C%5Cfrac%7Bkg%7D%7Bm%5E%7B3%7D%7D%20%29%5Ccdot%20%281.149%5Ccdot%2010%5E%7B-5%7D%5C%2Cm%5E%7B3%7D%29%5Ccdot%20%289.81%5C%2C%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%20%29%2B%280.950%5C%2C%5Cfrac%7Bkg%7D%7Bs%7D%29%5Ccdot%20%280.09%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%20%29)
![P = 1.090\,N](https://tex.z-dn.net/?f=P%20%3D%201.090%5C%2CN)