Answer:
Explanation:
Factors which affects and impacts our environment may include water, sunlight, buildings and so many other. The factors which can touched are called the physical factors. The physical factirs include buildings, humans and so on. Other factirs which aren't physical inckide the the effects posed to the environment t by biological and chemical factirs which may include, the impacts in sunlight and Rainfall, the pH and so on.
Answer:
The magnitude of the force per unit of lenght between the wires are of F/L= 3.17 * 10⁻⁵ N/m.
Explanation:
d=0.0665m
I1=I2= 3.25A
μo= 4π * 10⁻⁷ N/A²
F/L= (μo * I1 * I2) / (2π * d)
F/L= 3.17 * 10⁻⁵ N/m
Answer:
(A) The magnitude of the tension increases to four times its original value, 4F.
Explanation:
When an object moves in circular motion, a centripetal force acts on it . In this scenario the centripetal force acting on the stone is given by .
Where m is the mass of object
v- velocity or speed of the object
r - radius of the circle
Important to note is that the tension is equal to the centripetal force.
Given that initially the string makes one complete revolution per second and then speeds up to make two complete revolutions in a second .It implies that the speed has doubled .
Using our equation :F =
where F is the tension in the string
let the initial speed be =v then after it doubles it becomes 2v
Keeping the radius of the circle unchanged we have :
F=
From the equation it can be seen that the initial Tension has increased by a factor of 4 .
Therefore the magnitude of the tension increases to four times its original value, 4F.
C. Both A. and B.
Explanation:
Statement A. Reducing the volume is true because of Boyle's law, which states that for a gas at fixed temperature, the pressure p and the volume V are inversely proportional:
Therefore, when the volume V is reduced, the pressure p increases.
Statement B. Adding more gas is also true: in fact, if we add gas into the container, we will have more molecules of the gas hitting the wall of the container. But the pressure of a gas is exactly given by this: by the collision of the molecules against the wall of the container, so the more the molecules of gas, the greater the pressure.