When balancing the equation the variety of atoms in reactant side have to be equal to number of atoms in product side.
You are watching: Which sequence of coefficients will balance the following equation
The sequence the balance the equation above is 2,1,2 thus the balanced equation is as below.
2Ca (s) + O₂ → 2CaO (s)
2 ways Acceleration deserve to be readjusted are:i) boosting or decreasing the velocity the a moving object.ii) readjust of direction of the moving object.
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A tall, cylindrical chimney falls over as soon as its base is ruptured. Treat the chimney as a slim rod of length 58.8 m. At the insta
Using conservation of mechanical power for rotational motion of chimney
gain of rotational KE = loss of potential power
1/2 Iω² = mgl/2 ( 1 - cosθ ) ; ns is minute of inertia , ω is angular velocity , m is mass of chilney , together is its length .
I = 1/3 m l²
1/6 m l²ω²= mgl/2 ( 1 - cosθ )
1/6 m v² = mgl/2 ( 1 - cosθ )
v² = 3gl( 1 - cosθ )
radial acceleration at the height = v² / r
=3gl( 1 - cosθ ) / l
= 3g ( 1 - cosθ )
= 3 x 9.8 ( 1 - cos 30.2 )
= 4 m / s²
b ) let angular acceleration it is in α .
Torque acting at the time
mgsinθ x together /2 = ns α
mgsinθ x l /2 = 1/3 m l² α
α = 3g sinθ / 2l
α x together = 3gsinθ / 2
= 3 x 9.8 sin 30.2 / 2
= 7.4 m /s²
c ) tangential acceleration equal to g
3gsinθ / 2 = g
sinθ = 2 / 3
42 level .
5 month ago
An astronaut hold a absent 100m above the surface of earth X. The rock is then thrown upward v a rate of 15m/s, as presented in
i dunno UnU
11 month ago
Use the Bohr version to deal with this question. Once a hydrogen atom provides a change from the 5 th power level to the 2nd, coun
A. 2.82 eV
C. 59.5 angstroms
A. To calculation the energy of the photon emitted you usage the adhering to formula:
n1: last state = 5
n2: initial state = 2
Where the energy is electron volts. You change the worths of n1 and n2 in the equation (1):
B. The power of the emitted photon is offered by the adhering to formula:
h: Planck"s continuous = 6.62*10^-34 kgm^2/s
c: speed of irradiate = 3*10^8 m/s
λ: wavelength the the photon
You first convert the energy from eV come J:
Next, you usage the equation (2) and also solve because that λ:
C. The radius the the orbit is provided by:
where ao is the Bohr"s radius = 2.380 Angstroms
You usage the equation (3) with n=5:
hence, the radius that the atom in that is 5-th state is 59.5 anstrongs
9 months ago
What room the potential hazards connected with utilizing coal
Coal build up when burned in chimneys and can get set ablaze and collection a home on fire!
7 month ago
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