Answer:
95.38 %
Explanation:
Transformer is an electrical device which has two or more coils of wire used to transfer electrical energy by changing magnetic field
Power of a transformer coil = voltage * Current
Transformer does not require any moving parts to transfer energy. Therefore we cannot see any friction or windage losses here. But they have some types of losses called “copper losses” and “iron losses” but generally these are quite small.
So there for it can affect the efficiency of the transformer also. Efficiency can be defined as follow
Choices 1,3,4 are supported.
Choice 2 is incorrect because a horizontal slope on a position time graph means the object is starionary.
Choice 5 is incorrect because the speed of an individual can be determined by calculating the slope at a point on the position time graph.
Astronomers use the doppler effect to study the motion of objects across the Universe.
Answer:
X = 5.44 m
Explanation:
First we can calculate the normal force acting from the floor to the ladder.
W₁+W₂ = N
W1 is the weigh of the ladder
W2 is the weigh of the person
So we have:
The friction force is:
Now let's define the conservation of torque about the foot of the ladder:
Solving this equation for X, we have:
Finally, X = 5.44 m
Hope it helps!
Set it up as a direct proportion:
2.0lb/9hb = x/100hb
solve x (100hb •2.0lb)/9hb = 22.2lb
22.2lbs