Answer:
140.85 is the correct answer
Answer:
Option A, Boyle's law
Explanation:
The complete question is
Pressure and volume changes at a constant temperature can be calculated using
a. Boyle's law. c. Kelvin's law.
b. Charles's law. d. Dalton's law.
Solution
In Boyle’s law, the gas is assumed to be ideal gas and at constant temperature. With these two conditions fixed, Boyle’s established that volume of gas varies inversely with the absolute pressure.
The basic mathematical representation of this phenomenon is as follows -

OR

Where P is the pressure of ideal gas, V is the volume and k is the constant of proportionality.
Hence, option A is correct
Answer:
30 cm
Explanation:
f = Focal length = 25 cm
R = Radius of curvature (both sides are equal)
= Refractive index of lens = 1.6
The lens maker formula is given by
minus sign because it is on the other side

The radius of curvature of the glass surface is 30 cm
<span>50 N
The centripetal force upon an object is expressed as
F = mv^2/r
So let's substitute the known values and calculate
F = mv^2/r
F = 1.0 kg * (5.0 m/s)^2 / 0.5 m
F = 1.0 kg * 25 m^2/s^2 / 0.5 m
F = 25 kg*m^2/s^2 / 0.5 m
F = 50 kg*m/s^2
F = 50 N
So the answer is 50 N which matches one of the available choices.</span>