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:
in the ball
Explanation:
potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.
Answer:
(a): It spends on the trip 2.75 hr (2 hours 45 minutes)
(b): The person travels 213.9 km.
Explanation:
Vp= 77.8 km/h
V1= 89.5 km/h
V2= 0 km/h
t2= 0.36hr
t1= ?
Vp= (V1*t1 + V2*t2) / (t1 + t2)
clearing t1:
t1= 2.39 hr
Trip time= t1+t2
Trip time= 2.75 hr (a)
Distance traveled= V1*t1
Distace traveled= 213.9 km (b)
Answer:
Explanation:
The gravitational potential at a point on the Earth surface is given by:
where
G=6.67×10^-11Nm^2kg^-2 is the gravitational constant
M=5.98×10^24kg is the Earth's mass
R=6.38×10^6 m is the Earth's radius
Substituting the numbers into the equation, we find