Adamped harmonic oscillator consists of a block (m = 2.00 kg), a spring (k = 10.0 n/m), and a damping force (f = −bv). initially, it oscillates with an amplitude of 25.0 cm; because of the damping, the amplitude falls to three-fourths of this initial value at the completion of four oscillations. we assume that the damping force does not affect the period of each oscillation. (a) what is the value of b? (b) justify the assumption that "damping force does not affect the period of each oscillation".

Explanation:

Given that,

Mass of block = 2.00 kg

Spring constant = 10.0 N/m

Initial amplitude

Final amplitude

Number of oscillation = 4

(a). We need to calculate the time

Given formula,

Put the value into the formula

We need to calculate the value of b

Using damping formula

(b), The damping force equation is

We know that,

The time period is

Therefore, time period is affected by damping force.

Hence, This is the required solution.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.