Answer:
A rectangular object may have different areas for different sides.
If that object is placed on a hand, the area of its side does not affects the Force. However the pressure it puts on the hand is affected by the area.
Explanation:
The Force that object applies on the hand is given as the product of its mass and gravitational acceleration 'g'. Hence area does not affect the Force and it is constant.
F = mg
Pressure is defined as the Force per unit area.
P = F/A
As the surface area decreases and Force remains constant, the pressure on the hand increases and vice versa.
Answer:
90%
Explanation:
if you lose 10% of a 100 you get 90
The difference between the above velocities is that they exist in opposite direction of each other. or it can be said that they are negative vectors of each other.
Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).
M = V d
M = 1.4 * 2 = 2.8 kg
Answer:
Current in outer circle will be 15.826 A
Explanation:
We have given number of turns in inner coil 
Radius of inner circle 
Current in the inner circle 
Number of turns in outer circle 
Radius of outer circle 
We have to find the current in outer circle so that net magnetic field will zero
For net magnetic field current must be in opposite direction as in inner circle
We know that magnetic field is given due to circular coil is given by
For net magnetic field zero
So 
