Answer:
Explanation:
The calcite Crystal can be identified by carrying out an acid test on it. This is done by bringing it in contact with a weak acid which cause crack in it structure. Hence a little of carbondioxide gas is released.
Since diamond is the hardest object,it can be identified on a Mohs scale. Likewise it can be tested by bringing it in contact with a newspaper, if the letters on the paper are not seen, that shows it is a pure diamond.
Window glass is identified by the code on it.
While Quartz Crystal is identified by scratch test. When it is used to scratch all other softer stones and metal, it leaves mark on them.
The probablity is a 50 percent chance
Answer:
The time is 2.8 ms.
Explanation:
Given that,
Capacitor = 0.12 μF
Resistance = 10 kohm
Voltage = 12 V
Charge Q = 0.9 Q₀
We need to calculate the time constant
Using formula of time constant

Put the value into the formula


We need to calculate the time
Using formula of time

Put the value into the formula




Hence, The time is 2.8 ms.
The scattering angle is:
θ = 50.1°
Explanation:As the Compton's Shift is given as:
Δλ = (h(1-cosθ))/m₀c --- (1)
Where
h/m₀c = 2.426 * 10^-3 nm
Δλ = 0.00087 nm (Given)
Plug in the values in the equation (1) and solve for θ:
θ =
θ = 50.1°