Answer:
square root of 2gh
Explanation:
gh=(1/2)(v^2)
dividing both sides by 1/2, we have
2gh=v^2
therefore;
v=square root of 2gh
The most exact answer is 78.4J also in this kind of options we can say answer "d"
Answer:
3.9E-8
Explanation:
We know that
Mv²/r = Bqv
So
r= mv/Bq
But E is 1/2mv² which is 5.53eV
m²v² =2m x 5.53eV
mv = √( 2 x 9.1E-31)
So
r= √( 2 x9.1E-31 x 5.53)/ 7.83x10^-4 x1.6E-19
= 3.9x10-8cm
Explanation:
Answer:
(a) the initially stationary spelunker is accelerated to a speed of 4.70 m/s - 6106 J
(b) he is then lifted at the constant speed of 4.70 m/s - 5488 J
(c) finally he is decelerated to zero speed. How much work is done on the 56.0 kg rescue by the force lifting him during each stage - 4869 J
Explanation:
knowing
d = 10 m
m = 56 kg
The work done by the applied force to pull the spelunker is given by
Wa + Wg = Kf - Ki
Wg = -mgd
First
Wa = mgd + 0.5 - 0.5
Wa = (56*9.8*10) + (0.5*56*)
Wa = 6106 J
Second
Kf = Ki
Wa = mgd + 0.5 - 0.5
Wa = 56*9.8*10
Wa = 5488 J
Third
Kf = 0
Wa = mgd + 0.5 - 0.5
Wa = (56*9.8*10) - (0.5*56*)
Wa = 4869 J
Answer: The daughter is named Susie.
Explanation: LIL SUSIE!!!
HUH? DIDN'T UNDERSTAND THE QUESTION!
HAVE A GREAT DAY!!!!!