Answer:the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.
Explanation:
Answer:
The five components of physical fitness are cardiovascular endurance, muscular strength, muscular endurance, flexibility and body composition, according to Fit Day.
cardiovascular endurance:
Cardiorespiratory endurance:
is the level at which your heart, lungs, and muscles work together when you're exercising for an extended period of time. This shows how efficiently your cardiorespiratory system functions, and is an indicator of how physically fit and healthy you are.
muscular strength:
Muscular strength is defined as the maximum amount of force that a muscle can exert against some form of resistance in a single effort.
muscular endurance:
Muscular endurance is the ability of your muscle or muscle groups to withstand repeated contractions for an extended period.
flexibility and body composition:
Stretching before and after activities will help to improve flexibility. The sit-and-reach and the trunk lift are two tests used to measure flexibility. Body Composition is the percentage of body weight that is fat compared to other body tissue, such as bone and muscle.
Answer:
1. 23°
2. 65°
Explanation:
1.
The law of reflection provides that for the same medium, the angle of reflection equals the angle of incidence.
Similarly, here, angle of incidence and reflection will be 46°÷2=23°
2. Since the normal, angles of reflection and incidence lie on the same plane and also the angles of reflection and incidence are equal then the angle between the plane of the mirror and the reflected beam will be given by 90-25=65°
