Physics, 10.08.2021 17:40 paracordcms
While outdoors on a sunny day, a student holds a large convex lens of radius 4.0 cm above a sheet of paper to produce a bright spot on the paper that is 1.0 cm in radius, rather than a sharp focus. By what factor is the electric field in the bright spot of light related to the electric field of sunlight leaving the side of the lens facing the paper
Answers: 2
Physics, 21.06.2019 13:30
Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5 seconds to cover the distance
Answers: 2
Physics, 22.06.2019 05:30
Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?
Answers: 1
Physics, 22.06.2019 06:00
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 14:30
When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell
Answers: 2
While outdoors on a sunny day, a student holds a large convex lens of radius 4.0 cm above a sheet of...
Spanish, 09.02.2021 15:00
History, 09.02.2021 15:00
Mathematics, 09.02.2021 15:00
English, 09.02.2021 15:00
Mathematics, 09.02.2021 15:00
Physics, 09.02.2021 15:00
Mathematics, 09.02.2021 15:00
History, 09.02.2021 15:00
Mathematics, 09.02.2021 15:00
Physics, 09.02.2021 15:10