A periodic wave (i. e., a wave pattern that repeats itself) is produced in a stretched string by a mechanical oscillator operating at a frequency of 465 Hz. This means that one point on the stretched string is pushed up and down at a regular frequency. The so-called "oscillator" is the source of the repeating waves. The linear density of the string is 0.00140 kg/m and the wavelength of the periodic wave is 0.0700 m.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.