Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

7.236 seconds

Step-by-step explanation:

It is given that a pendulum is L meters long. The time,t,in seconds that it tales to swing back and forth once is given by

We need to find the time taken by pendulum to swing back and forth once if the length of the pendulum is 12.96 meters.

Substitute L=12.96 in the given equation.

Therefore, the time taken by pendulum to swing back and forth once is 7.236 seconds.

unless if u could do my questions, if not i wouldn't want to

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v