18. when considering a magnet's force of attraction over a known distance, you would expect the strength of attraction 4 inches away from the magnet to be weaker than the strength of attraction at 1 inch from the magnet.
a. 8 times
b. 4 times
c. 16 times
d. 6 times
Answers: 3
Physics, 22.06.2019 06:00
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t Ī where l is the length of the string, t is its tension, and Ī is its linear density.â (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and Ī are constant) (ii) the tension (when l and Ī 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 â f is â (ii) when the tension is increased by turning a tuning peg df dt 0 and t is â f is â (iii) when the linear density is increased by switching to another string df dĪ 0 and Ī is â f is â
Answers: 3
Physics, 22.06.2019 11:00
If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c
Answers: 1
Physics, 22.06.2019 11:50
Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
Answers: 2
18. when considering a magnet's force of attraction over a known distance, you would expect the stre...
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31
Mathematics, 12.01.2020 02:31