Answer:
(a). Z = 54.54 ohm
(b). R = 36 ohm
(c). The circuit will be Capacitive.
Explanation:
Given data
I = 2.75 A
Voltage = 150 V
rad = 48.72°
(a). Impedance of the circuit is given by


Z = 54.54 ohm
(b). We know that resistance of the circuit is given by

Put the values of Z &
in above formula we get

R = 36 ohm
(c). Since the phase angle is negative so the circuit will be Capacitive.
I like to think of it this way:
... Gravity pulls on heavy objects with more force than light objects.
(That's why they're "heavy".)
... Heavy objects are the ones with more mass. Light objects are the ones with less mass.
... Gravity is pulling on more mass with more force, and on less mass with less force.
... But from Newton's 2nd law of motion, we know that it takes more force to accelerate more mass, and less force to accelerate less mass.
That's exactly what gravity is doing. So the heavy object with more mass, and the light object with less mass, wind up with the same acceleration.
There you go. With zero math !
Answer:
W = 181.26 J
Explanation:
Given that,
The force acting on the cart, F = 20 N
It is at an angle of 25 degrees above the horizontal to move a crate a distance of 10m across the floor.
We need to find work done by the student. The work done by the student is given by :

So, the required work done is 181.26 J.