To neutralize the positive forces of the protons.
Answer:
v = 2 m/s
Explanation:
Here we can use energy conservation to find the speed at the lowest point on its trajectory
As we know that by energy conservation
initial total gravitational potential energy = final total kinetic energy
now the height that is moved by the pendulum while it swing down is given as
![h = L(1 - cos30)](https://tex.z-dn.net/?f=h%20%3D%20L%281%20-%20cos30%29)
![h = 1.5(1 - cos30) = 0.200 m](https://tex.z-dn.net/?f=h%20%3D%201.5%281%20-%20cos30%29%20%3D%200.200%20m)
now we can use energy conservation as
![mgh = \frac{1}{2}mv^2](https://tex.z-dn.net/?f=mgh%20%3D%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
![v = \sqrt{2gh}](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B2gh%7D)
![v = \sqrt{2(9.8)(0.200)}](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B2%289.8%29%280.200%29%7D)
![v = 2 m/s](https://tex.z-dn.net/?f=v%20%3D%202%20m%2Fs)
Answer:
![T = 6.31 ^0 C](https://tex.z-dn.net/?f=T%20%3D%206.31%20%5E0%20C)
Explanation:
1 ton = 907.2 kg
so here heat given by water = heat absorbed by the ice
so by energy balance we will have
![Q_1 = Q_2](https://tex.z-dn.net/?f=Q_1%20%3D%20Q_2)
![mL + ms\Delta T_1 + ms\Delta T_2 = ms\Delta T_3](https://tex.z-dn.net/?f=mL%20%2B%20ms%5CDelta%20T_1%20%2B%20ms%5CDelta%20T_2%20%3D%20ms%5CDelta%20T_3)
so we have
![140(2.11)(5) + 140(333.7) + 140(4.18)(T) = 907.2(4.18)(20 - T)](https://tex.z-dn.net/?f=140%282.11%29%285%29%20%2B%20140%28333.7%29%20%2B%20140%284.18%29%28T%29%20%3D%20907.2%284.18%29%2820%20-%20T%29)
![48195 + 585.2 T = 75841.9 - 3792.1 T](https://tex.z-dn.net/?f=48195%20%2B%20585.2%20T%20%3D%2075841.9%20-%203792.1%20T)
![T = \frac{27646.92}{4377.3}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B27646.92%7D%7B4377.3%7D)
![T = 6.31 ^0 C](https://tex.z-dn.net/?f=T%20%3D%206.31%20%5E0%20C)
Explanation:
An atom is made up of three fundamental particles:
- Protons are positively charged particles in an atom
- Electrons are negatively charged.
- Neutrons carry no charges.
In a neutral atom, the number of protons and electrons are the same and equal.
Most atoms are usually depicted this way:
ᵃₙX
where a is the mass number of the atom.
n is the atomic number
X is the symbol of the atom
The mass number is the sum of the number of protons and neutrons
Atomic number is the number of protons.
In a neutral atom, the atomic number is also the number of electrons since the atom is neutral. It has not gained or lost any additional electrons.
Learn more:
Atomic number brainly.com/question/2057656
#learnwithBrainly
When wind is related to the movement of warm and cold air masses the type of heat transfer that this represents is convection.