Answer: Initial velocity of the object (u) = 5 m/s Final velocity of the object (v) = 8 m/s Mass of the object (m) = 100 kg Time take by the... View Article
Correct option : (c) TtWW could be the genetic makeup of the tall parent. Since half of the progenies are short, the parent plant will also have... View Article
The suggestion made by Kiran that the insect suffered a greater change in momentum as compared to the change in momentum of the motor car is... View Article
Given Mass of the hockey ball, m = 200 g = 0.2 kg Hockey ball travels with velocity, v1 = 10 m/s Find out The change of momentum occurred in... View Article
Answer: According to the third law of motion when we push an object, the object pushes us back with an equal and opposite force. These two... View Article
Given that Abdul, while driving to school, computes the average speed for his trip to be 20 km h-1. On his return trip along the same route,... View Article
Answer: Let us consider the numbers which are divisible by 4 4, 8, 12, 16, 20, 24, 28, 32, 36, 40.... Now let us consider the numbers which... View Article
Why Black Lights Make Things Glow? The difference is that black lights emit most of their light waves just outside the range humans can perceive,... View Article
Answer: Red phosphorus is harmless, odourless, and chemically active, though not in a significant way. It's a dark red colour that isn't... View Article
Inhalation: Red phosphorus is not considered toxic but contamination with yellow phosphorus may cause coughing, bronchitis, possible liver or... View Article
Unlike safety matches, 'strike anywhere' matches don't require the red phosphorus striking surface in order to ignite. This is because they... View Article
Atomicity is the number of atoms of an element present in one molecule of that element. The number of atoms present in a molecule of phosphorus... View Article
White pine and aspen are two common woods used for this purpose. Once the matchsticks are formed, they are soaked in ammonium phosphate, which is... View Article
Hybridization of Phosphorus in P4: It exists as molecules made up of four atoms in a tetrahedral structure. The tetrahedral arrangement results... View Article
In P4, all of the atoms bonding are the same. There will be no polarity between in the bonds between the atoms, and thus no polarity in the... View Article
Answer: Phosphorus can form a P4 white phosphorus tetrahedron because it can form three bonds. The most stable allotrope of phosphorus, red... View Article
White phosphorus is the least stable, the most reactive, the most volatile, the least dense, and the most toxic of the allotropes. It gradually... View Article
Answer: White phosphorus reacts very fast with atmospheric oxygen and catches fire so it is dipped in water to prevent it from oxygen gas supply... View Article