An object is sinking. Circle all of the following that are true. A) Forces are i
ID: 1471966 • Letter: A
Question
An object is sinking. Circle all of the following that are true.
A) Forces are in equilibrium
B) Forces are unbalanced
C) The Net force on the object is zero
D) The velocity of the object COULD be constant.
Q5) A cube of lead and a cube of aluminum are chosen so that they have equal volumes but not equal densities.If both cubes are submerged in water which of the following is true about the Buoyant Force?
A) The buoyant force is equal on both objects
B) The buoyant force is larger on the aluminum
C) The buoyant force is larger on the lead
Q6)A glass is filled with water to a height of 10 cmThe water is poured out and replaced with maple syrup which has a density of 1333 kg/m3 Again the height is 10 cm. Which of the following is true:
A) The pressure on the top of the syrup is larger than the pressure on the top of the water
B) The bottom pressure in the syrup is equal to the pressure at the bottom of the water
C) The bottom pressure in the syrup is largerthan at the bottom of the water
D)The bottom pressure in the syrup is smaller than at the bottom of the water
E) None of the above
please explain your answers
Explanation / Answer
Note: As per Guidelines, I answer one question, please post other questions separately. (In the case of different questions)
Q4)
After certain time buoyant drag forces balance the weight, so, the equilibrium, net force is zero and moving with constant speed.
So, the correct options are A,B,D
Q5)
The density of the lead is more than that of the aluminium. That is the mass of the lead is more than that of the aluminium.
The Archimedes’ principle states that the magnitude of buoyant force on an object is always equal to the weight of the fluid displaced by the object. Since, the magnitude of the buoyant force is equal to the weight of the block. Since, weight of the lead block is greater than that of the aluminium; the buoyant force on lead is greater than that of the aluminium.
Therefore, the correct option is C