Which statement about homeostasis is true?
.
Homeostasis helps to maintain body equilibrium.
B.
Homeostasis helps to prevent infection.
C.
Homeostasis helps to provide energy.
D.
Homeostasis helps to excrete waste.
E.
Homeostasis helps in blood circulation.

In a good thermo flask the main cause of heat loss is

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground