In a mechanical system, it is a law that energy should be conserved. In this case, what is the initial energy should be equal to the total energy after the motion happened. We do as follows:
PE(at rest) = KE(during motion) + PE(after motion)
51450 J = KE(during motion) + 32781 J
KE(during motion) = 18669 J
Can you please please give me more information please thank you
Answer:
a) 3/12 = 1/4
b) 6/12 = 1/2
c) 9/12 = 3/4
Step-by-step explanation:
To find the distance traveled by the hour hand, subtract the beginning position from the ending position. For example, in a, the distance traveled between 4:00 and 7:00 is three hours. Since there are 12 total hours on a clock, the fraction would be 3/12 (traveled/whole revolution). Simplify further to get 1/4.
The other two problems are very similar to the explanation above. Treat the second problem's ending time as 14:00, since it is two hours after 12:00.
Hope this helps!
Answer:
Brenda Reardon's biweekly salary is $1,675
Step-by-step explanation:
Remember that
1 year=52 weeks
biweekly means every two weeks
so
To determine biweekly salary divide the yearly salary by 52/2=26 weeks
$43,550/26=$1,675
therefore
Brenda Reardon's biweekly salary is $1,675
