Answer:
4.9 kg.m/s.
Explanation:
Given that
mass ,m = 0.7 kg
Initial speed , u = 5 m/s ( Towards + x direction)
Final speed ,v= -2 m/s ( Towards - x direction)
We know that linear momentum is given as
P = Mass x velocity
Change in the linear momentum ΔP will be
ΔP = m ( v - u)
Now by putting the values in the above equation ,we get'
ΔP= 0.7 ( -2 - 5 ) kg.m/s
ΔP= - 4.9 kg.m/s
The magnitude of the change in the linear momentum will be 4.9 kg.m/s.
Answer:
The magnetic force on a current-carrying wire is perpendicular to both the wire and the magnetic field with direction given by the right hand rule.
O2
And i think this should be under Chemistry, not Physics. Have a nice day :)
When a person is pulled upwards why the motor of the helicopter
Then the potential energy increased of the person is given as
here m = 109 kg
h = 83 m
so here potential energy of the person given as
now power is defined as rate of energy
so it took 55 s to pull the mass so power is given as
now we know that efficiency of motor is given as 69%
so we have
so we have power as
Answer:
-2.5 is the answer to your question