Answer:

Explanation:
#Using the conservation of momentum , momentum before equals momentum after(
.
-Initial speed is 5.2m/s while the cart is at rest. After, the velocity will be of a combined(bag+cart) mass.
Hence:

Hence, the final velocity of the cart and bag is 1.77m/s
Answer:
Ball will not hit bell.
Explanation:
The height of the ball is modeled by the equation h(t)= -16t²+39t
We need to find if the bell is 25 ft above the ground, will it be hit by the ball.
So we need to find maximum height of the ball.
For maximum height we have

Substituting in h(t) = -16t²+39t
Maximum height reached = h(1.22) = -16 x 1.22²+39 x 1.22 = 23.77 ft
So maximum height reached is less than height of bell.
Ball will not hit bell.
Answer
given,
Capacitance of capacitor = 20.0-µF
Voltage = 150.0-V
inductance = 0.280 m H
a) the oscillation frequency of circuit


f = 2126.9 Hz
b) 
U = 0.225 J
c)Current in the inductor



instantaneous rate of change of current is equal to 535714 A/s