A ball is thrown straight up with an initial speed of 12 m/s. What are the velocity and acceleration when it is at the top of it
1 answer:
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Answer:
The force acting in x direction is 34.44 N
Explanation:
We have,
Force acting on the box is 65 N at an angle of 58 degrees to the horizontal the surface of frictional.
It is required to find the net force in x- direction.
The net force acting in the x- direction is given by :
So, the force acting in x direction is 34.44 N.
Answer:
4.08 kg
Explanation:
We can apply the Newton's second law of motion to find the mass of this object:
,
where is mass, and
is acceleration, which is substituted by
here. Now, plugging given numbers in the equation, we have
.
Solving for mass, we have
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.