Answer:D) Egocentrism
Explanation:
Mr.Tong should be alerted to Piaget's concept of Egocentrism which is under the pre operational stage of Piaget's theory.
Following are the key features of Pre operational stage
- Centration
- Egocentrism
- Play
- Symbolic Representation
- Pretend (or symbolic) Play
- Animism
- Artificialism
- Irreversibility
The feelings and actions of children are usually self-centered. Egocentrism refers to the failure of the child to see a situation from another person Perception.
The self-centered child believes that other people see, hear, and feel exactly the same as the child does, according to Piaget.
Here Also 5 year old daughter does not think about her father and ask question blatantly
Answer:
The dose is 6 mSV
Explanation:
The absorbed dose (in gray - Gy) is the amount of energy that ionizing radiation deposits per unit mass of tissue. That is,
Absorbed dose = Energy deposited / Mass
while Dose equivalent (DE) (in Seivert -Sv) is given by
DE = Absorbed dose × RBE (Relative biological effectiveness)
First, we will determine the Absorbed dose
From the question, Energy deposited = 30mJ and Mass = 50kg
From,
Absorbed dose = Energy deposited / Mass
Absorbed dose = 30mJ/50kg
Absorbed dose = 0.6 mGy
Now, for the Dose equivalent (DE)
DE = Absorbed dose × RBE
From the question, RBE = 10
Hence,
DE = 0.6mGy × 10
DE = 6 mSv
One way is speed=distance divided by time
The smallest one is the least powerful one. And the medium size one is the medium powerful one. And the largest one is the most powerful one of them all
