Physics, 06.06.2021 14:00 kcombest2979
An electric kettle heats some water. The same kettle then heats a different liquid. The
temperature of the liquid rises more rapidly than the temperature of the water.
What is a possible explanation of this difference?
A The liquid condenses on the cooler parts of the kettle less than the water does.
B The liquid expands more than the water as it heats up.
C The liquid has a lower boiling point than the water.
D The liquid has a smaller thermal capacity than the water
Answers: 1
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
Physics, 22.06.2019 14:40, casie65
During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?
Answers: 1
An electric kettle heats some water. The same kettle then heats a different liquid. The
temperature...
Mathematics, 18.06.2020 03:57
Mathematics, 18.06.2020 03:57
Mathematics, 18.06.2020 03:57