Answer:
Nitrogen is used to protect steel from water because nitrogen has low reactivity.
Explanation:
Nitrogen is very low reactive element because it forms a gas when triple bond between two Nitrogen atoms. Due to low reactivity of Nitrogen the water does not react with the nitrogen and steel as well. So, for protection of steel Nitrogen is used.
Given Information"
Kinectic energy = 6.5 MeV
magnetic field = B = 1.9 T
Period = T = 1 ms
Required Information"
Diameter = d = ?
Answer:
d = 38.6 cm
f = 1000
Explanation:
(a) What is the diameter of the largest orbit, just before the protons exit the cyclotron?
The radius and hence the diameter of the largest orbit can be found by using
r = mv
/|q|B
Where q = 1.60x10⁻¹⁹ C and m = 1.67x10⁻²⁷ kg and v is the speed of the particle which can be found by using
v = √2K
/m
Where K is the kinetic energy in Joules.
1 eV is equal to 1.60x10⁻¹⁹ J
K = 6.5x10⁶*1.60x10⁻¹⁹ = 1.04x10⁻¹² J
v = √2*1.04x10⁻¹²
/1.67x10⁻²⁷
v = 35.29x10⁶ m/s
r = 1.67x10⁻²⁷*35.29x10⁶
/1.60x10⁻¹⁹*1.9
r = 0.193 m
d = 2r
d = 2*0.193 = 0.386
or d = 38.6 cm
(b) A proton exits the cyclotron 1.0 ms after starting its spiral trajectory in the center of the cyclotron. How many orbits does the proton complete during this 1.0 ms?
The period T and frequency (number of rotations per second) are related as
f = 1/T
f = 1/0.001
f = 1000
The following are four real life examples of the result of scientific investigation:
1. The development of the whole human genome.
2. The discovery of penicillin.
3. The discovery of a drug that cures tuberculosis.
4.The discovery that atoms have different energy levels and that electrons are found at each level.
All these events comes about as a result of scientific investigations.
The force exerted on Alice’s foot as she kicks the ball is 1.25 N.Force can be defined as the influence that can accelerate the object.
<h3>
What is force?</h3>
Force can be defined as the influence that can accelerate the object. From Newton's Second Law of motion,
![F = ma](https://tex.z-dn.net/?f=F%20%3D%20ma)
Where,
- force
- mass = 0. 25 kg
- acceleration = 5 N
Put the values in the formula,
![F = 0.25 \times 5\\\\F = 1.25 \rm \ N](https://tex.z-dn.net/?f=F%20%3D%200.25%20%5Ctimes%205%5C%5C%5C%5CF%20%3D%201.25%20%5Crm%20%5C%20N)
Therefore, the force exerted on Alice’s foot as she kicks the ball is 1.25 N.
Learn more about Force:
brainly.com/question/2840101