Explanation:
Potential energy is the energy obtained by an object due to the position of an object. Whereas kinetic energy is the energy obtained by an object due to its motion.
For example, an ball is placed over a building of height h. Then steps followed to covert its potential energy into kinetic energy are as follows.
Step 1: When ball is at placed over a building of height h, then it has only potential energy and no kinetic energy.
Step 2: A man pushes the ball and it moves in the downward direction.
Step 3: When ball starts to move or fall it gains kinetic energy, that is potential energy now becomes equal to 0.
Similarly, on reaching the ground and after bouncing a few times when it stop moving then kinetic energy converts into potential energy.
the answer is A compound is represented by two or more elements in a definite proportion. That is represented by H2O.
Answer:
When the machine indicates a lie, what is the probability that the suspect is really lying? If the machine does not indicate a lie, what is the probability that the suspect is really telling the truth?
My solution if the probability that a test subject is chosen at random from the 200 in fact lie = 80/(80+5)=0.94
Then when 15% of people arrested lie, the probability that the suspect is really lying is 0.15*0.94=0.141
Answer: a) 31.86 *10^-12 C=31.86 pC; b) 18 V
Explanation: In order to explain this problem we have to consider the expression a parallel plates capacitor,which is given by:
C=Q/V where C is equal to C=εo*A/d where A and D are the area and the separation between the plates.
also we have
Q=C*V=ε(o*A/d)*V=(8.85*10^-12*0.02*0.02/1*10^-3)*9=31.86*10^-12 C=31.86pC
Then if the plates apart to a new spacing of 2.0 mm the new capacitance is equal
Cnew=εo*A/2*d so Cnew =Cinitial/2
then Cnew =Q/Vnew (Q is constant after disconnection to the battery)
Finally Vnew= Q/(Cinitial/2)= 2*(Q/Cinitial)= 2*Vinitial= 2*9=18V
Explanation:
Given that,
Work done, W = 4.57 J
Distance,
Distance,
We know that the work done by the spring is given by :
k = 550.65 N/m
To find,
Let is the extra work is required to stretch it an additional 9.54 cm. It can be calculated as :
W = 2207.96 J
So, the extra wok done is 2207.96 J.