Explanation:
It is given that,
Magnitude of charge,
It moves in northeast direction with a speed of 5 m/s, 25 degrees East of a magnetic field.
Magnetic field,
Velocity,
We need to find the magnitude of force on the charge. Magnetic force is given by :
<em>Since</em>,
So, the force acting on the charge is and is moving in positive z axis. Hence, this is the required solution.
Explanation:
(a) Formula to calculate volume of the submerged wooden block is as follows.
It is given data of the wooden block is as follows.
depth = 7.96 cm, length (l) = 6 cm
width (w) = 4 cm,
So, we will calculate the volume of the submerged wooden block as follows.
=
= 286.56
Hence, the submerged volume of the block is 286.56 .
(b) Expression for the buoyant force acting on the wooden block is as follows.
And, expression for the force of gravity of the wooden block is as follows.
As the wooden block is floating on the water hence, buoyant force is balanced by the weight of the block.
Hence, mass of the wooden block will be calculated as follows.
=
=
= 0.02857 kg
Therefore, mass of the given block is 0.02857 kg
(c) Expression for the density of the block is as follows.
Now, expression for the total volume of the wooden block is as follows.
Hence, density of the given block is as follows.
=
=
=
Therefore, density of the given block is .