Two 3-ohm resistances in series have 6 ohms of resistance. The battery makes no difference. They don't even have to be in a circuit at all ... the two resistors could be in a box on the shelf. If they're connected in series, then they make 6 ohms.
Answer:
(A) 14.7 N
(B) 0.15 m
(C) the speed will become 24.8 m/s while wavelength becomes 0.21 m
Explanation:
frequency (f) = 120 Hz
mass (m) = 1.5 kg
linear mass density (μ) = 0.0480 kg/m
acceleration due to gravity (g) = 9.8 m/s^{2}
(A) tension on the rope (T) = mg = 1.5 x 9.8 = 14.7 N
speed =
speed =
speed = 17.5 m/s
(B) wavelength = velocity / frequency
wavelength = 17.5 / 120 = 0.15 m
(C) when the mass are increased to 3.00 kg
tension now becomes = mg = 3 x 9.8 = 29.4 N
therefore speed = = = 24.8 m/s
wavelength now becomes = velocity / frequency = 24.8 / 120 = 0.21 m
hence the speed will become 24.8 m/s while wavelength becomes 0.21 m
Answer: true
They vary from element to element