Answer:
The final velocity of the wooden block is equal to
Explanation:
Given that mass of bullet =
Mass of wood =
Initial velocity of bullet =
Final velocity of bullet =
Initial velocity of wood = o
Final velocity of wood =
Here momentum is conserved so initial momentum = final momentum
.
Upon substituting these values in above equation , we get
.
Answer:
Explanation:
Thrust is known as a reaction force which appears when a system expels or accelerates mass in one specific direction. If we know the acceleration and the mass of the air expelled by the jet engine, we can compute the thrust .
The acceleration is calculated by using the dynamics formula
The values are
The thrust is
Answer: 3 A
Explanation:
According to<u> Ohm's law</u>:
Where:
is the voltage
is the resistance of the resistor
is the electric current (the value we want to find)
Isolating :
Finally:
Answer:
mu=12Tm^2
Explanation:
the magnetic moment mu of a single loop is given by:
where I is the current, B is the magnetic field and A is the area of the loop. By replacing we obtain:
hope this helps!!