A160-n child sits on a light swing and is pulled back and held with a horizontal force of 100 n. the magnitude of the tension force of each of the two supporting ropes is a : 190 n b : 120 n c : 60 n d : 94 n

T = 190 N

Explanation:

When child is sitting on the swing then the weight of the child is vertically downwards

So it is

now a force of 100 N is acting on the swing in horizontal direction

so it is given as

now the net force is resultant force due to gravity and horizontal force

so it is given as

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."