Answer:
81.9756 m/s
16.8 m
4.8795 Hz
Explanation:
m = Mass of string = 0.12 kg
L = Length of string = 8.4 m
T = Tension on string = 96 N
Linear density is given by
Spee of the wave is given by
The speed of the waves on the string is 81.9756 m/s
Wavelength is given by
The longest possible wavelength is 16.8 m
Frequency is given by
The frequency of the wave is 4.8795 Hz
The answer is vector D towards the centre.
Answer:
Explanation:
Answer:
Explanation:
mass of book, m = 2.10 kg
diameter of pulley, = 0.170 m
radius of pulley, R = 0.085 m
mass of hanging book, m' = 3 kg
initial velocity, u = 0 m/s
distance, s = 1.2 m
time, t = 0.9 s
Let a be the acceleration of the system and T and T' is the tension in the string which is horizontal and vertical respectively.
Use second equation of motion
s = ut + 0.5 at²
1.2 = 0 + 0.5 x a x 0.9 x 0.9
a = 2.96 m/s²
(a) Use second equation of motion
T = ma
T = 2.10 x 2.96
T = 6.216 N
m'g - T' = m'a
3 x 9.8 - T' = 3 x 2.96
T' = 20.52 N
(b) Let the moment of inertia of the pulley is I.
So, (T' - T)R = I x α
(20.52 - 6.216) x 0.085 = I x 2.96 / 0.085
I = 0.035 Kgm²
Answer:
0.005 V
Explanation:
We are given that
Initial circumference of circular loop=C=165 cm
Rate of circumference,
Magnetic field,B=0.5 T
We have to find the induced emf at time t=9 s
We know that induced amf,E=
Area of circular coil,A=
Circumference of circular coil,C=
Radius of coil at time t=9 s
E=
Magnitude of induced emf=0.005 V
Answer:
Falsa
Explanation:
Because with out calculation we can't find density