Momentum and CollisionHard
Question
A sample of metal weights 210 grams in air, 180 grams in water and 120 grams in an unknown liquid. Then : -
Options
A.the density of metal is 3 g/cm3
B.the density of metal is 7 g/cm3
C.density of metal is 4 times the density of the unknown liquid
D.the metal will float in water
Solution
Density of metal = 
= 7g/cm3
density of liquid =
= 3g/cm3
= 7g/cm3density of liquid =
= 3g/cm3Create a free account to view solution
View Solution FreeMore Momentum and Collision Questions
A bomb of mass 9 kg explodes into two pieces of masses 3 kg and 6 kg. The velocity of mass 3 kg is 16 m/s. The KE of mas...Two wires of same diameter of the same material having the length l and 2l. If the force F is applied on each, the ratio...A particle of mass M, starting from rest, undergoes uniform acceleration. If the speed accuired in time T is V, the powe...When a U-238 nucleus originally at rest decays by emitting an alpha particle with speed $u$, the recoil speed of the res...The following foue wires are made of the same material. Which of these will have the large extension when the same tensi...