The path distance from the garden to a school is 5m east and then 12m south. A builder wants to build a short distance path for
1 answer:
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Answer:
BOYLE'S Law
Explanation:
Boyle's law states that at constant temperature the volume of a fixed quantity of an ideal gas is inversely proportional to the pressure of the gas.
Mathematically:
From the universal gas law we have:
where:
P = pressure of the gas
V = volume of the gas
n = no. of moles of gas
T = temperature of the gas
R = universal gas constant
when the mass of gas is fixed i.e. n is constant and temperature is also constant.
here the suffix 1 and 2 denote two different conditions of the same gas.
Answer:
Explanation:
Speed is the rate of motion and can be found by dividing the distance by the time.
The distance covered is 56 meters and the time taken is 4 seconds.
Substitute the values into the formula.
Divide.
The speed of the car is <u>14 meters per second</u>
Answer:
11m
Explanation:
Given:
Resistivity ρ = 5.6e-8 Ωm
Radius r = 0.045 mm = 4.5 x 10⁻⁵ m
Voltage V = 120V
Current I = 1.24A
From Ohm's law,
R = 96.77 Ω
Resistivity = (Resistance × Area)/ length
ρ = (RA)/L
Therefore, the length of a wire is given by;
L = (RA)/ρ
Calculating the area A of the wire;
A = πr²
A = π × (4.5 x 10⁻⁵)²
A = 6.36 x 10⁻⁹ m²
Substituting area of the wire A = 6.36 x 10⁻⁹ m² into the equation of the length of wire
L = (96.77 × 6.36×10⁻⁹ ) / 5.6×10⁻⁸
L = 10.9977m
L = 11m (approximately)