Question
A body explodes into three equal fragments, two of
which fly off perpendicular to each other with equal speeds. What is the direction of the third fragment?Solution
Given: – A body explodes into 3 equal fragments (mass = m each) – Two fragments move at equal speeds v , perpendicular to each other – Body was initially at rest → total momentum = 0 Assume: – First fragment moves along x-axis → momentum = m·v – Second fragment moves along y-axis → momentum = m·v Resultant momentum of first two fragments: = √[(m·v)² + (m·v)²] = m·v·√2 To conserve momentum, the third fragment must have equal and opposite momentum: → magnitude = m·v·√2 → direction = opposite to the resultant of the first two (i.e., 225° from x-axis)
B-trees and B+ trees are designed to maintain balance by adjusting the:
What is the maximum number of different Boolean functions involving n Boolean variables?
In the Entity-Relationship (ER) model, what does an entity represent?
Ternary relationship has how many participating entities?
What happens if an exception is thrown but not caught?
In a pipelined CPU design, what is the purpose of the instruction pipeline?
In a public blockchain, who can participate in the validation of transactions and creation of new blocks?
What is the decimal equivalent of the binary number 10101?
What will be the output of the code
int main(){
int array[] = {100,200,300};
cout<
}
Which circuit configuration has a single path for current flow?
Relevant for Exams:
