Physics, 14.12.2019 00:31 nakeytrag

The battery capacity of a lithium ion battery in a digital music player is 750 ma-h. the manufacturer claims that the player can operate for eight hours if the battery is initially fully charged. given this information, determine the number of electrons that flow through the player as you listen to your favorite songs for three hours.

a. 6.2 times 10^18 electrons
b. 1.0 times 10^3 electrons
c. 2.4 times 10^9 electrons
d. 6.3 times 10^21 electrons
e. 8.1 times 10^28 electrons

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 04:30

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Answers: 1

Answer

Physics, 22.06.2019 07:00

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Answers: 1

Answer

Physics, 22.06.2019 10:30

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.

Answers: 1

Answer

Physics, 22.06.2019 18:00

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Answers: 1

Answer

You know the right answer?

The battery capacity of a lithium ion battery in a digital music player is 750 ma-h. the manufacture...

Questions