Answer:
Explanation:
Resultant of two forces, F = 8 N
It is required to find the angle between two forces. The resultant of two force is given by the :
is the angle between F₁ and F₂
So,
So, the angle between two forces is 165 degrees.
Answer:
A
Explanation:
When you multiply a vector by a scalar the magnitude will change but the direction will not change.
Answer:
5 meters, 6miles, 30 kilometers/hour
Explanation:
just did the test on a.p.e.x
Answer:
The speed of the rod is 2.169 m/s.
Explanation:
Given that,
Mass = 0.100 kg
Current = 15.0 A
Distance = 2 m
Length = 0.550 m
Kinetic friction = 0.120
(a). We need to calculate the magnetic field
Using relation of frictional force and magnetic force
Where, l = length
i = current
m = mass
Put the value into the formula
(b). If the friction between the rod and rail is reduced zero.
So,
We need to calculate the acceleration
Using formula of force
Put the value into the formula
We need to calculate the speed of the rod
Using equation of motion
Put the value into the formula
Hence, The speed of the rod is 2.169 m/s.