B. opposite charge and smaller mass
Answer: unless it's acted upon by an external force
Explanation: Newton first law of motion State that an object will continue in it state of rest or in motion, unless it is been acted upon by an external force
Hearing test provides an evaluation of the sensitivity of a person's sense of hearing and is most often performed by an audiologist using an audiometer. An audiometer is used to determine a person's hearing sensitivity at different frequencies.
Answer:
1) e
2)c
3)b
4)d
i dont know if these are right, but something along these lines if you understand the pattern
Explanation:
To solve this problem it is necessary to apply the kinematic equations of linear and angular motion, as well as the given definitions of the period.
Centripetal acceleration can be found through the relationship

Where
v = Tangential Velocity
R = Radius
At the same time linear velocity can be expressed in terms of angular velocity as

Where,
R = Radius
Angular Velocity
PART A) From this point on, we can use the values used for the period given in the exercise because the angular velocity by definition is described as

T = Period
So replacing we have to

Since 
Then the radius in meters would be


Then the centripetal acceleration would be

From the result obtained, considering that it is an unimaginably low value of an order of less than
it is possible to conclude that it supports the assertion on the inertial reference frame.