Answer:
Explanation:
We shall apply law of conservation of momentum to know velocity after collision . Let it be v .
total momentum before collision = total momentum after collision
15 x 1.5 - 12 x .75 = ( 15 + 12 ) v
v = .5 m /s
kinetic energy before collision
1/2 x 15 x 1.5² + 1/2 x 12 x .75²
= 16.875 + 3.375
= 20.25 J
kinetic energy after collision
= 1/2 x ( 15 + 12 ) x .5²
= 3.375 J
Loss of energy = 16.875 J
This energy appear as heat and sound energy that is produced during collision .
Answer: 3.3 x 10^-28 J
Explanation: just answered on a quiz!! :)
Answer:
The change in the magnetic flux in the ring is 10.99 Wb.
Explanation:
Given that,
An MRI technician moves his hand from a region of very low (B=0) magnetic field strength into an MRI scanner’s 3.50 T field with his fingers pointing in the direction of the field.
Diameter of the ring, d = 2 cm
Radius, r = 1 cm
It takes 0.4 s to move it into the field. We need to find the change in magnetic flux in the ring. Magnetic flux is given by :

So, the change in the magnetic flux in the ring is 10.99 Wb. Hence, this is the required solution.
Explanation:
Weight/gravity - Downwards
Normal force - Upwards
keep in mind that the length of the arrows of both the weight and the normal forces have to be equal since these are vectors and are equal to each other to cancel each other out