Answer:
The correct answer is going to be C
Explanation:
A fullerene is an allotrope of carbon in the form of a hollow sphere, ellipsoid, tube, and many other shapes. Spherical fullerenes, also referred to as Buckminsterfullerenes or buckyballs, resemble the balls used in association football. Cylindrical fullerenes are also called carbon nanotubes (buckytubes).
Answer:
F = +17.48 N
Explanation:
We have,
Electric charge is +0.638 C and the electric field is 27.4 N/C to the right.
It is required to find the electric force felt by the electric charge.
When a charged particle is placed in electric field, it will posses electric force. The sign of force depends on the charged particle.
The electric force is given by :
So, the electric force is 17.48 N and the force is positive.
A hanging mass of 23 kg will exert a force of:
23 * 9.81 = 225.6 Newtons on the string
Thus, during rotation, the force exerted should remain less than this. Force on an object in circular motion is given by:
F = (m * v^2) / r
225.6 = (2.95 * v^2) / 0.791
v = sqrt(60.491)
v = 7.78 m/s
Thus, the magnitude of the velocity should not exceed 7.78 meters per second.