Answer:
1.92×10^-9 microCoulomb
Explanation:
Elemental charge = 1.6×10^-19 Coulomb
Charge of balloon after 12,000 electrons have been removed from it = 12,000 × 1.6×10^-19 Coulomb = 1.92×10^-15 Coulomb = 1.92×10^-15/10^-6 = 1.92×10^-9 microCoulomb
speed at end is accn of gravity x time
9.81x12=just over98.1m/s
Answer:
Time takes the player to read the entire CD is 94.9 minutes.
Explanation:
compact disc (CD) contains 783.216 megabytes of digital information.
Each byte consists of exactly 8 bits.
constant rate of 1.1 megabits per second
How many minutes does it take the player to read the entire CD?
1 Megabites = 1000000 bites
783.216 megabytes = 783216000 bites = 783216000 x 8 = 6265728000 bits
1.1 megabits/s = 1100000 bits/s
thus
t = 6265728000 bits/1100000 bits/s
= 5696 s
= 94.9 min
To solve this problem it is necessary to apply the conservation equations of the moment for an inelastic impact or collision. In turn, it is necessary to apply the equations related to the conservation of potential energy and kinetic energy.
Mathematically this definition can be expressed as
Where,
Initial velocity of each object
Mass of each object
Final velocity
Our values are given as
Replacing we can find the value of the final velocity, that is
From the definition of the equations of simple harmonic motion the potential energy of compression and equilibrium must be subject to
Since there is no kinetic energy due to the zero speed in compression, nor potential energy at the time of equilibrium at the end, we will have to
Re-arrange to find A
Finally, the period can be calculated through the relationship between the spring constant and the total mass, that is,