Usually static electricity is present in balloons when rubbing them together. There is often an imbalance of positive and negative charges in the balloons which causes the static electricity.
Answer:
osmoregulation
Explanation:
paramecium determine excess water by osmoregulation
Given parameters:
Velocity of the car = 5m/s North
Time = 9s
Unknown:
Displacement of the car = ?
Solution:
Displacement is the distance traveled in a specific direction. It is a vector quantity with magnitude and direction.
To find displacement use the expression below;
Displacement = Velocity x Time
Input the parameters and solve;
Displacement = 5 x 9 = 45m due North
The displacement of the car is 45m due North
Answer:
The radii of the arterioles constrict by humoral control and by nervous control.
Explanation:
The vascular system regulation is performed by the smooth muscle of the arterioles, which constitute the maximum resistance point. The smooth muscle relaxation provokes vasodilation, increasing its diameter. On the contrary, smooth muscle contraction provokes a decrease in the arteriole´s diameter, reducing the blood flow.
This muscle is under the control of the autonomous nervous system and certain hormones.
Substances such as adrenaline, noradrelanine, angiotensine, vasopresin, and endotelines cause vasoconstriction.
Also, there are many vasoconstrictor fibers of the sympathetic nerves that increase resistance and modify blood flow.
Answer:
Option C
Explanation:
In general, the amount of nutrient served to an adult is equal to 50% of the nutrient served to adults. The amount of calories consumed by an adult is equal to 2000 to 2800 calories per day. Therefore, the calories required by a young kid is equal to 1000 to 1400 calories per day. Considering this, a nutrient feed of 3 tablespoon is sufficient to cater the calorie requirement of young children of age above 3 years
Hence, option C is correct
