Physics, 22.11.2019 03:31, alix1234567888
Chapter d3, problem d3/057 incorrect a flatbed truck going 113 km/h rounds a horizontal curve of 259-m radius inwardly banked at 11°. the coefficient of static friction between the truck bed and the 157-kg crate it carries is 0.63. calculate the friction force f acting on the crate. the friction force is positive if it acts up and to the right, negative if it acts down and to the left.
Answers: 2
Physics, 22.06.2019 06:00, jagmeetcheema
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒
Answers: 3
Chapter d3, problem d3/057 incorrect a flatbed truck going 113 km/h rounds a horizontal curve of 259...
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