D, melting point and reactivity/solubility in water!
Answer: Fnet = 40 N on the right
Explanation: The net force is the summation of forces acting on an object. Add the forces in the same direction and subtract to the opposing force moving in the opposite side.
Fnet= F1 + F2 - F3
= 120 N + 60 N - 140 N
= 180 N - 140 N
= 40 N on the right
Answer:
![\phi_i = BA](https://tex.z-dn.net/?f=%5Cphi_i%20%3D%20BA)
Explanation:
magnetic flux is the count of magnetic field lines passing through a given loop or area
As we know that magnetic flux is given by the formula
![\phi = \vec B. \vec A](https://tex.z-dn.net/?f=%5Cphi%20%3D%20%5Cvec%20B.%20%5Cvec%20A)
here we also know that magnetic field B and plane of the coil is perpendicular in initial position
So the area vector is always perpendicular to the plane of the coil
so the angle between magnetic field and area vector is parallel to each other and this angle would be zero
so magnetic flux of the coil initially we have
![\phi = BAcos0 = BA](https://tex.z-dn.net/?f=%5Cphi%20%3D%20BAcos0%20%3D%20BA)
Answer: The angle of inclination is nearly 30°
Explanation:
For a body on an inclined plane, the coefficient of friction between the body and the plane is equal to the ratio of the moving force applied to the body to the frictional force acting on the body.
If uK coefficient of friction;
Fm is the moving force
R is the normal reaction on the body
Mathematically uK = Fm/R
Fm = WSin(theta)
R = Wcos(theta)
uK = Wsin(theta)/Wcos(theta)
uK = tan(theta)
theta = arctan(uK)
If uK is 0.58
theta = arctan0.58
theta = 30°
The angle of the inclined will be 30°
This is because of Convection. Convection is the transfer of thermal energy by the movement of particles from one part of something to another.