Answer:
acceleration = v-u /t
30- 20/5
= 10/5 = 2m/sec²
Force = mass * acceleration
Force = 0.1 * 2
Force = 0.2 Newton
Answer:
The surface gravity is inversely proportional to the square of the radius of the planet
Explanation:
The gravity at the surface of a planet is given by:
where
G is the gravitational constant
M is the mass of the planet
R is the radius of the planet
We see from the formula that the surface gravity is inversely proportional to the square of the radius of the planet, R.
At the Earth's surface, the value of the surface gravity is approximately 9.81 m/s^2.
Answer:
the answer is 5k in the bottle have
The pressure of the water on the diver is given in an expression written as:
<span>p=15+15/33d
where p is the pressure and d is the distance of the diver </span><span>below the surface.
The pressure is calculated as follows:
</span>p=15+15/33(100) = 15.00 pounds per square feet
Therefore, the correct answer is option A.
Answer:
515.22 m/s
Explanation:
Formula for root mean square velocity is SQRT (3RT/M)
Where,
R = Rydberg's constant = 8.314 Kg. m²/ s². K. mol
T = Temperature in Kelvin
M = Molar mass in Kg/mol
First calculate molar mass,
As nitrogen is diatomic molecule,
Its molar mass is
M = 2(14) = 28 g/mol
Convert unit into Kg/mol
28 g/mol x 1 Kg/1000g = 2.8x10¯² Kg/mol
Convert temperature into kelvin
T = 25 + 273 = 298K
Put all values in formula
Vrms = SQRT (3RT/M)
Vrms = SQRT (3x8.314x298/2.8x10¯²)
Vrms = SQRT (265454. 14)
Vrms = 515.22 m/s
