I could be totally wrong but I believe you must take into account the forces on the object in the vertical direction.
In this case, the object is being pulled by a rope with a tension of 120 N.
The vertical force would therefore be 120 sin(30)
Normally W = [F normal] with no vertical force. However, since there is a vertical force:
W = [F normal] + [120 sin (30)]
(25 kg X 9.8 m/s2) = [F normal] + [120 sin (30)]
245 N - 60 N = [F normal]
185 N = [F normal]
I apologize if this is incorrect as I haven't been in a physics class in over 4 years. Good luck!
By convention angles are measured from the normal to the reflecting surface. The angle of incidence, 35 degrees, is equal to the angle of reflection. In this case 35 degrees. The answer is 35 degrees.
80 degrees - on the other side of the normal (perpendicular) to the reflecting surface.
There is no such expression. The normal to a surface, at a given point is the radius of curvature of the surface, at that point.
The law of reflection: When a ray of light reflects off a mirror, the angle of the incidence ray is equal to the angle of the reflection ray. Therefore, an incidence ray of 45 degrees will have a reflection ray of 45 degrees. As both rays are equal, either side of the normal line, then adding both angles equals 45 + 45 = 90 degrees. The normal line is a line perpendicular to the surface of the mirror.
If the ray hits the mirror at an angle of 30 degrees with the mirror surface, the complementary angle that the ray makes with the normal (perpendicular) to the mirror at the point of incidence is (90 - 30) = 60 degrees and since angle of incidence is equal to angle of reflection in a plane mirror, the angle of reflection is 60 degrees.
No, a frictionless surface cannot exert a normal force because the normal force is a force exerted perpendicular to the contact surface and is necessary to counteract the force of gravity or any other downward force. Without friction, there is no need for a normal force to counteract any horizontal force component.
Normal, Friction, Tension, and Elastic Forces.
By convention angles are measured from the normal to the reflecting surface. The angle of incidence, 35 degrees, is equal to the angle of reflection. In this case 35 degrees. The answer is 35 degrees.
The Horizontal Component of the normal force.
A line with equal angles from a surface is referred to as being normal
The angle of incidence is the angle between the incident ray and the normal (perpendicular line) to the surface. In normal incidence, the incident ray is perpendicular to the surface, so the angle of incidence is 0 degrees.
The angle of reflection is equal to the angle of incidence. It will be at 30o to the surface of the mirror (from the opposite edge) ^ This answer is not correct for SURFACE, but is correct for RELATIVE ^
When water is heated, that energy can be given to the hydrogen bonds, keeping the water cool. So, water has a high specific heat because it takes a lot of energy to heat it up. Surface tension is a result of hydrogen bonds holding the surface molecules together tightly. So the relationship between water's high specific heat and surface tension is that hydrogen bonds are responsible for both of them. If hydrogen didn't have these bonds, water's specific heat would be normal, and its surface tension negligable.
The surface tension of water allows it to resist spillage when objects like paper clips are placed on its surface. The paper clips increase the water's surface tension by disrupting the normal bonding of water molecules, creating a barrier that helps prevent spillage.
A normal fault is a type of fault in which the hanging wall drops down relative to the footwall due to tensional forces in the Earth's crust. This type of fault is commonly associated with extensional tectonic settings, where the crust is being pulled apart.
normal
Because of centrifugal force tension on both side will be increased but at the same time normal reaction force in between belt and pulley surface will goes down so frictional tension will be decrease and ultimately power transmission efficiency will decrease.