Answer:
502.51 kg/m^3
Explanation:
Upthrust on object in water is 40 - 20 = 20 N
Upthrust is equal to the buoyancy forces given as
B = pgv
p is density of water 1000 kg/m^3
g = acceleration due to gravity 9.81 m/s^2
v is the volume of liquid displaced.
Therefore
B = 1000 x 9.81 x v
20 = 9810v
v = 2.038x10^-3 m^3
For Upthrust in unknown liquid, we have 40 - 30 = 10 N
Bouyancy force for the liquid will be
B = P x 9.81 x 2.038x10^-3
NB- the same volume of fluid will be displaced i.e 2.038x10^-3 m^3
Equating we have
10 = P x 9.81 x 2.038x10^-3
10 = 0.0199p
p = 10/0.0199 = 502.51 kg/m^3
Answer:
1. Teach students to understand that hard work pays off.
2. Encourage thinking & ingenuity to solve problems.
3. Teachers purchase items for their jobs, whether it be clothing, school supplies, or ibuprophen.
Explanation:
Dual thinking: Teachers buy things & teach students to bevome productive citizens.
The sperm comes from the father's body and the egg comes from the mother's body. When it's time to make a baby, these two bodies fit together. The sperm finds the egg and a seed may be planted in the mother's womb.
Voltaire.................
<span>Trying to remember someone's name whom you met long ago is an example of
"retrieval".</span>
Retrieval of
memory or recall alludes to the ensuing re-getting to of occasions or data from
the past, which have been already encoded and accumulated in the mind. In general
terminology, it is known as remembering. Retrieval is one of the three center
procedures of memory.
