Answer:
Explanation:
a) The magnitude of the net force on the student = 0 N since the student is standing still on level ground and upward reaction force = downward force.
b) the magnitude of the contact force on the student by the backpack = 80 N since the student was backing the backpack
c) the magnitude of the contact force o the student by the ground = 550 N + 80 N = 630 N reactional force on the student
10 cm3 because the density equition is d = m/v
Answer:
Direction of wave traveling is +X direction.
Explanation:
Given :
Direction of electric field = direction
Direction of magnetic field = direction
We know that electromagnetic waves is transverse wave.
The direction of electric field and magnetic field are perpendicular to each other.
So we write,
Where direction of propagation.
Put the direction on above equation,
From the right hand rule we can say that direction of wave propagation is +X direction.
Use pythagorean theorem and inverse tangent.
a) magnitude - 29.15; angle - 59 degrees
b) magnitude - 234.09; angle - 110 degrees
c) magnitude - 0.4; angle - south
d) magnitude - 234.3; angle - 309.81 degrees
e) magnitude - 42.43; angle - 315 degrees