Question
Which of the following are the characteristics of an
inelastic collision? I. Momentum is conserved. II. Total energy is conserved. III. Kinetic energy is conserved. IV. All the forces must be of conservative nature. Choose the correct answer:Solution
In an inelastic collision:
- Momentum is always conserved.
- Total energy (including kinetic and potential energy) is conserved.
- Kinetic energy is not conserved because some energy is converted into heat, sound, or deformation.
- Not all forces need to be conservative in nature.
Which command removes all rows but keeps table structure?
Which operator is used for pattern matching in SQL?
In PL/SQL, what type of parameter allows a procedure to both receive a value from the calling environment and return a modified value back to it?
ROW_NUMBER() OVER (PARTITION BY dept ORDER BY salary DESC) assigns:
In SQL, the ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW clause applies to:
Which type of index physically reorders the data rows in the table itself based on the index key, meaning the data is stored in the order of the index?
Deadlock in DBMS can be prevented using:
What is an SQL `VIEW`?
Which type of index physically reorders the data rows in the table itself based on the index key, meaning the data is stored in the order of the index?
In PL/SQL, what type of parameter allows a procedure to both receive a value from the calling environment and return a modified value back to it?
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