Answer:
- 7.56 C
Explanation:
E = 105 N/C downwards
m = 81 kg
Let the charge on the man is q.
To lose te contact with the ground, the electrostatic foece should be balanced by the weight of the person.
The charge should be negative in nature so that the direction of electrostatic force is upwards and weight is downwards.
q E = m g
q = (81 x 9.8) / 105 = 7.56 C
Answer:
As they travel through rock, the waves move tiny rock particles back and forth -- pushing them apart and then back together -- in line with the direction the wave is traveling. These waves typically arrive at the surface as an abrupt thud. Secondary waves (also called shear waves, or S waves) are another type of body wave
Explanation:
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Answer:
Explanation:
Angle of dip = 56° , magnetic field strength = 50μT
Vertical component = 50 x sin 56 = 41.45 μT
Horizontal component = 50 cos 56 = 27.96μT
New field is added in vertical downwards direction to increase the vertical component so as to increase the angle of dip . Let this field be B
total vertical field = B + 41.45
Horizontal component = 27.96
dip angle be θ
tanθ = vertical component / horizontal component
tan62 = B + 41.45 / 27.96
1.88 = B + 41.45 / 27.96
52.58 = B + 41.45
B = 11.13 μT
Since magnetic field has to be added , current should be clockwise when looked from above.
Answer:
C
Explanation:
Chemical reaction,physical