SCIENCE
PHYSICAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
hand and table
|
|
|
magnetism and gravity
|
|
|
the air around you and the floor
|
|
|
the air around you and gravity
|
Detailed explanation-1: -Examples of non contact force are gravitational force and magnetic force but not muscular force.
Detailed explanation-2: -Examples of this force include: electricity, magnetism, radio waves, microwaves, infrared, visible light, X-rays and gamma rays.
Detailed explanation-3: -Magnetic attraction and repulsion is one of three fundamental non contact forces in nature. The other two forces are electrostatic and gravitational (see the focus idea Forces without contact at level 4, Electrostatics – Level 4 and Gravity-Level 6).
Detailed explanation-4: -Gravitational force is considered to be a non-contact force because it is an attracting force which does not include contact between the objects to exert force.
Detailed explanation-5: -Gravitational force. Magnetic force. Electrostatics. The nuclear force-(there are two types of strong and weak nuclear force).