Answer: D. 332n
Explanation: I took the quiz and that was the correct answer
<span>F= ma so... a=F/m=
8N÷2kg=4m/s/s
THEN
vf²=vi²+2ad
vf²=0²+(2)(4)(18) = 144
vf²=√144
vf=12
THEN
KE = 1/2mv²
KE= (.5)(2)(12²)
KE = 144</span>
Answer:
Part a)
Part b)
Part c)
Part d)
Part e)
Part f)
Explanation:
Part a)
As we know that the maximum angle deflected by the pendulum is
so the maximum height reached by the pendulum is given as
so we will have
now gravitational potential energy of the pendulum is given as
Part b)
As we know that there is no energy loss while moving upwards after being stuck
so here we can use mechanical energy conservation law
so we have
Part c)
now by momentum conservation we can say
Part d)
Work done by the bullet is equal to the change in kinetic energy of the system
so we have
Part e)
recoil speed of the gun can be calculated by momentum conservation
so we will have
Part f)
Total energy released in the process of shooting of gun
One of Tesla’s great dreams — which he nearly made a reality — was to develop a system of totally wireless power distribution. His revolutionary idea was to use a quality of electromagnetic fields known as “resonant inductive coupling<span>.” An analogy: Imagine, if you will, a tuning fork vibrating. Put another identical tuning fork next to it, very close, and soon both will be making a sound.</span>