15. A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. In which directionwill the acceleration on the ball be when the ball passes point A?
a. direction a
b. direction b
c. direction c
d. direction d
Answers
A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. direction will the acceleration on the ball be when the ball passes point A is direction a. Hence option A is correct.
Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.
Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s. direction of the Agular velocity is given by right hand thumb rule.
Angular acceleration is rate of change of Angular velocity with respect to time.
i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².
To know more about Acceleration :
#SPJ1.
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Answers
Answer:Misses the Target
Explanation:
Given
Distance between window and Professor is h=11 m
she dropped the balloon 2 sec earlier
time taken by balloon to cover the 11 m
using
where h=height
u=initial velocity
t=time
a=acceleration
Therefore she misses the Professor by 0.51 s
B. Electrolytes
C. Nonelectrolytes
D. Ions
Answers
Answer:
Ions are atoms that carry an electric charge.
Explanation:
An ion is an atom or molecule that does not have a neutral electric charge. In other words, ions are atoms or groups of atoms that have an electric charge. Ions with a positive charge are called cations. Those with a negative charge are called anions.
Ionization is the formation of electrically charged molecules or atoms. Atoms are electrically neutral. The loss of one or more electrons from a neutral atom forms a cation. Conversely, an anion is an ion whose net charge is negative due to an increase in the number of electrons.
Cations and anions are usually represented with the symbol of the corresponding atom or group of atoms and the symbol "+" or "-", respectively. If the number of electrons gained or lost is greater than one, this is indicated by the corresponding number.
Answers
Answer:
Yes.
Explanation:
Answers
If gravity had no effect on a ball after you threw it ... and there also
were no air to slow it down ... then the ball would continue traveling
in a straight line, in whatever direction you threw it.
That's the heart and soul of Newton's laws of motion ... any object
keeps moving at the same speed, and in a straight line in the same
direction, until a force acts on it to change its speed or direction.\
If you threw the ball horizontally, then it would keep moving in the
same direction you threw it. But don't forget: The Earth is not flat.
The Earth is a sphere. So, as the ball kept going farther and farther
in the same straight line, the Earth would curve away from it, and it
would look like the ball is getting farther and farther from the ground.
b. chronology.
c. discovery.
d. use and applications.
Answers