Answer:
Explanation:
First Question
This question has to do with the mass defect in AMU.
It would get closer to the actual answer if I knew what mass of proton you are using and the mass of one neutron as well.
<u>Formula</u>
- Am = Z*m_h + (A - Z)*m_n - M
- Am is the mass defect
- Z is the atomic number (number of protons). 29
- m_h is the accepted mass of a proton. 1.0078
- A = Atomic Mass number 63
- m_n = mass of the neutron 1.0087
- M is the actual mass of the atom in question. 62.92958
<u>Solution</u>
Am = 29*1.0078 + (63 - 29)*1.0087 - 62.92958
Am = 0.59242 u The difference between what I get and D is that I don't exactly know what m_h and m_n are.
Second Question
The first step is to calculate the mass defect. Just use the formula above.
<u>Givens</u>
- Am = ?
- Z = 7
- A = 14
- m_h = 1.0078
- m_n = 1.0087
- M = 14.00307
Solution
Am = 7*1.0078 + (14 - 7)*1.0087 - 14.00307
Am=0.11243 u
1 u = 931.5 MeV
0.11243 u = x
x = 104.7285
This is more of a reading problem than a physics problem. They want the energy per nucleon, which is 14 (neutrons and protons).
E = 104.7285/14
E = 7.5 MeV
Answer
A
Answer:
37.11231 m/s
Explanation:
u = Initial velocity
v = Final velocity = 0
s = Displacement = 78 m
g = Acceleration due to gravity = 9.81 m/s²
= Coefficient of kinetic friction = 0.9
Acceleration is given by
Equation of motion
The initial speed of that car is 37.11231 m/s
Answer:
a) 0.324 m
b) -2.4 m
c) 1.08 m/s
d) -4 m/s
Explanation:
Initial position
Initial velocity
Acceleration
We need to use the following equations of motion:
a)
b)
c)
d)
Scientists can use GPS to measure the rate of tectonic plate movement. The answer would be C. digitized signals from GPS.