Question
A bullet is fired from a rifle which recoils after
firing. The ratio of kinetic energy of the rifle to that of the bullet is –Solution
The rifle and bullet have zero momentum and zero kinetic energy to start with. When the trigger is pulled, the bullet gains some momentum in the forward direction, but this is canceled by the rifle's backward momentum, so the total momentum is still zero. The kinetic energies of the gun and bullet are both positive scalars, however, and do not cancel.
Which of the following State has Celebrated the 3rd edition of the annual orange festival 2023?
The planting of sugarcane by trench method ______Â
What natural openings on the edges of leaves serve as entry points for bacterial pathogens such as Xanthomonas citri (black rot of cabbage)?
Plants which supply pollen for effective fruit set of a fruit tree are called
Which of the following weed causes Dropsy disease in humans?Â
Average rate of change in population is estimated by
Micro-propagation is common in multiplication of _________
Plants that possess spores and embryo but lack vascular tissues and seeds?
In Krebs Cycle, the initial step in the oxidation of pyruvate is its conversion toÂ
The National Food Security Act, 2013 makes Right to Food a legal entitlement. It implements which of the following Directive Principle of state policy.
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