To resolve point A and B we need the concepts related to conservation of momentum (By collision) and Kinetic Energy. Conservation of momentum is given by the equation,
Our values in the statment are:
Part A) As it is in an icy intersection, there is two different components (x,y) then,
Then the magnitude is,
Part B) To obtain the Kinetic Energy Loss we need to use its equation, which is given by,
The final energy is given by,
Then the change in Kinetic Energy is
<em>There was a loss of KE of 183.02kJ</em>
n = number of vibrations set in the string = 400 vibrations
t = total time taken for "n" vibrations set in the string = 4 second
f = frequency of the sound emitted due to vibrations set in the string
frequency of the sound emitted due to vibrations set in the string is given as
f = n/t
inserting the above values in the above formula
f = 400/4
f = 100 Hz
hence the frequency of sound comes out to be 100 Hz
Answer: E.
Explanation: because the book is on the table, its not really moving in any direction.
Answer: 20.2 m/s
Explanation:
From the question above, we have the following data;
M1 = 800kg
M2 = 1200kg
V1 = 13m/s
V2 = 25m/s
U (common velocity) =?
M1V1 + M2V2 = (M1 + M2). U
(800*13) + (1200*25) = (800+1200) * U
10400 + 30000 = 2000u
40400 = 2000u
U = 40400 / 2000
U = 20.2 m/s
