The energy in an oscillating lc circuit containing a 1.57 h inductor is 5.76 μj. the maximum charge on the capacitor is 201 μc. for a mechanical system with the same period, find the
(b) spring constant
(c) maximum displacement
(d) maximum speed.
the ball takes 0.2 sec to travel the height of the window, which is 2 m.
then the speed of the ball at that time was
we know that:
where is the initial velocity.
then we have the equation for the position as a function of time.
= initial position
r = position as a function of time
= initial velocity
g = acceleration of gravity
t = time.
if the ball is thrown from the ground then:
= 0 m
we want to find now the distance between the window and the ground.
when the ball reaches the bottom of the window t = 1.8s
the window is 37,404 m high
finally, to know how high the ball rises we must know at what moment the vertical velocity of the ball is zero.
now we replace t in the position equation
the ball reaches up to 44.70 m in height.
a, d, e, f are your answers. i hope this : d
force is directly proportional to mass according to the second law of newton, meaning that the greater the mass is, bigger the force should be in order to move the object. in this case, mutt's wagon has a mass two times greater than jeff's and they have to be equal. so either jeff must slow down twice as much or mutt has to speed up twice as much. the only option we can choose according to our reasoning is that mutt must use twice as much force to push his cart, because his mass is two times bigger. according to me the answer is c).