You take the mass number and subtract the number of neutrons
Explanation:
Given that,
Frequency of train horn, f = 218 Hz
Speed of train,
The speed of sound, V = 344 m/s (say)
The speed of the observed person,
(a) When the train approaches you, the Doppler's effect gives the frequency as follows :
(b) When the train moves away from you, the Doppler's effect gives the frequency as follows :
Hence, this is the required solution.
Answer is C, one student has more mass, therefore more inertia.
Answer:
The percentage of the weight supported by the front wheel is A= 19.82 %
Explanation:
B] Let the mass of plane be m, force on backwheels be Nb and nosewheel be Nn
Torque equation about nose wheel,
mg*(2.58-0.8) - Nb *(3.02-0.8) = 0
Nb = mg*(2.58-0.8)/(3.02-0.8) = 0.8018 mg
Nn = mg - Nb = (1-0.8018) mg = 0.1982mg
Weight percentage supported by front wheel = 19.82% answer
(c) as the change in the dependent variable is in direct CORRELATION to the change in the independent variable.