Answers: 3
Physics, 20.06.2019 18:02
Plzz worth 10 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation
Answers: 2
Physics, 21.06.2019 21:50
When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?
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 12:30
Which governments provide garbage collection services to homes and businesses
Answers: 3
Real images
O are erect
O are inverted
O can be projected on a screen
cannot...
O are erect
O are inverted
O can be projected on a screen
cannot...
Geography, 25.01.2022 02:50
Mathematics, 25.01.2022 02:50
Mathematics, 25.01.2022 02:50
English, 25.01.2022 02:50
English, 25.01.2022 02:50
Advanced Placement (AP), 25.01.2022 02:50
Mathematics, 25.01.2022 02:50
Mathematics, 25.01.2022 02:50
Social Studies, 25.01.2022 02:50
Mathematics, 25.01.2022 02:50
Mathematics, 25.01.2022 02:50