Abox is held at rest by two ropes that form 30° angles with the vertical. the tension t in either rope is 42 n. what is the weight (w) of the box?

73 n

36 n

79 n

86 n

62 n

w = 73 N

Explanation:

Since the box is held by the ropes it means that the resulting tension is equal to the weight of the box

T_res = w

Now, the resulting tension is a combination of the tension of each rope.

Since we want to find the vertical component we must multiply by the cosine of 30 degrees the value of T

T_res =  T*cos(30) + T*cos(30)

T_res = 2*(42 N)*(0.866)

T_res = 72.746 N

T_res = w = 72.746 N

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.