Two steel guitar strings have the same length. string a has a diameter of 0.513 mm and is under 403 n of tension. string b has a diameter of 1.29 mm and is under a tension of 800 n. calculate the ratio of the wave speeds, va/vb, in these two strings.

Explanation:

= Tension force in string A = 403 N

= Tension force in string B = 800 N

= diameter of string A = 0.513 mm

= diameter of string B = 1.29 mm

= wave speed of string A

= wave speed of string B

Ratio of the wave speeds is given as

b

step-by-step explanation: a third of 24 is 8, 8 times 3 is 24 so 8 - 2 would be 6

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.