Answer:
230.4kg
Explanation:
volume of the room = l× b×h
volume= 8×6×4
volume=192m3
density= mass/volume
hence mass= density × volume
mass= 1.2kgm-3 × 192m3
mass= 230.4kg
Answer:
Hacksaw blade because it is metal.
Answer:
L=N/I*magnetic flux
=N/I*BA=N*mu(0)NIA/2pi*R=mu(0)N^2/2pi*R)*Pi*a^2
=mu(0)N^2a^2/2R
Explanation:
Answer:
A frictional force of 10N on the opposite direction can be used to balance the given force.
Explanation:
The net force is the sum of all forces acting on the object in different directions (x,y):
(1)
Where
represents the net force, m is the mass and a is the acceleration.
(2)
is the sum of the forces that are in the x direction, for this particular case
has to be equal to zero to be balanced.


So a force with the same magnitude but opposite direction is needed (-x).
Hence, a frictional force of 10N in the opposite direction can be used to balance the given force.