I found a similar problem from another website which shows the diagram. This is because we need to compute first the net force to determine the work. Afterwhich, we can use the formula: Work = Force*Distance.
Net Force = 12.2 N - wcosθ
Since the weight is 30 N and the angle is 24°,
Net Force = 12.2 - 30cos24° = -15.2 N
So,
W = (-15.2 N)(3.60 m)
<em>W = -54.7 J</em>
Answer:
option (d)
Explanation:
The minimum angle of inclination of the inclined plane from the horizontal such that the object placed on the inclined plane is just start sliding down.
The value of angle of repose is given by the
tan θ = μ
Where, θ be the angle between the horizontal plane and the inclined plane and μ be the coefficient of friction.
It is also called as the angle of sliding.
Answer:
A spiral galaxy in which Earth is located
Explanation:
Because spiral galaxies are characterized by a distinct flattened spiral disk with a bright center called the nucleus making it lookl ike a hurricane symbol on weather hurricane trackers. Our very own Milky Way is a spiral galaxy and Eaerth is located rigth in their.
Answer:
C) Emf is the force exerted on a single charge to move it from one terminal to the other of an emf device.
Explanation:
Electromotive force, abbreviation E or emf, electrical energy per unit supplied from an energy source, such as an electrical generator or a battery. In the engine or battery, electricity is transformed from one source to another as the device works on the electrical charge that is passed within itself.
In physics it is defined as Work done by a cell or battery in moving a unit charge from its one terminal to the other, against the potential.
Hence C is correct