Answer:
chemical symbol: Th
atomic number:90
protrons :90
neutrons:142
group#:4
period#: 9
Explanation:
you take the atomic weight (232.038)and subtract the atomic number to get (90) which is your neutrons
Find the magnetic force experienced by a proton moving with the speed of 4x10^5 m/s in the magnetic field B of magnetic 7x10^-5
T.
A- Fmagnetic = 24.8x10^-19 N
B- Fmagnetic = 34.8x10^-19 N
C- Fmagnetic = 44.8x10^-19 N
D- Fmagnetic = 54.8x10^-19 N
A- Fmagnetic = 24.8x10^-19 N
B- Fmagnetic = 34.8x10^-19 N
C- Fmagnetic = 44.8x10^-19 N
D- Fmagnetic = 54.8x10^-19 N
1 answer:
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Answer:
71.4583 Hz
67.9064 N
Explanation:
L = Length of tube = 1.2 m
l = Length of wire = 0.35 m
m = Mass of wire = 9.5 g
v = Speed of sound in air = 343 m/s
The fundamental frequency of the tube (closed at one end) is given by
The fundamental frequency of the wire and tube is equal so he fundamental frequency of the wire is 71.4583 Hz
The linear density of the wire is
The fundamental frequency of the wire is given by
The tension in the wire is 67.9064 N