Answer:
25
Explanation:
magnitude and (b) direction (as an angle relative to the x axis) of the velocity
The correct answer is “C” ultrasound. Hope this helps!
Answer:
Average velocity = 360km/h due Northeast.
Explanation:
Given the following data;
Distance = 1260km
Time = 3.5h.
Velocity =?
Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.
Mathematically, velocity is given by the equation;


Substituting into the above equation;

Velocity, V = 360km/h.
Since velocity is a vector quantity, it must have both magnitude and direction.
<em>Hence, the average velocity of the airplane is 360km/h due Northeast. </em>
Answer:
Explanation:
Let v be the terminal velocity of the bar .
emf induced in the bar of length L
= B L v where B is the value of magnetic field.
current i in the circuit containing resistance R
i = induced emf / R
BLv / R
Magnetic force in upward direction in the bar
F = BiL
= BL x BLv / R
B²L²v / R
For attainment of uniform velocity
magnetic force = weight
B²L²v / R = mg
so current
i = BLv / R