Answer:
please read the answer below
Explanation:
A). If electric and magnetic forces over the charge allow that the particle describe a straight line, electric and magnetic forces are equal:
electric and magnetic field are perpendicular between them and to the velocity of the charge, hence
v=E/B.
If the particle is moving to the right (+x), we can assume that electric field is upward (+z), and then magnetic field has a direction to out of the paper (+y). Thus, the electric force is directed upward (+z) and the cross product qv X B produces a magnetic force in the -z direction.
B).
E and B are constant, hence, kinetic energy does not change.
hope this helps!
Answer:
PE = (|accepted value – experimental value| \ accepted value) x 100%
Explanation:
Answer: 1) a = 9.61m/s² pointing to west.
2) (a) Δv = - 37.9km/s
(b) a = - 6.10⁷km/years
Explanation: Aceleration is the change in velocity over change in time.
1) For the plane:
a = 9.61m/s²
The plane is moving east, so velocity points in that direction. However, it is stopping at the time of 13s, so acceleration's direction is in the opposite direction. Therefore, acceleration points towards west.
2) Total change of velocity:
km/s
The interval is in years, so transforming seconds in years:
v =
km/years
Calculating acceleration:
Acceleration of an asteroid is a = -6.10⁷km/years .
Answer:
Option C
Explanation:
given,
velocity of airplane = 80 m/s
angle with the horizontal = 15°
speed of the ground= ?
when the plane is taking off the horizontal component of the velocity is v cosθ
so,
ground speed of the airplane is =
=
v = 77.27 m/s
horizontal velocity of the air plane comes out to be 77.27 m/s ≅ 77 m/s
so, the correct option is Option C