Answer:
I dont know but nice question
Explanation:
I laughed super hard when I saw this
The answers are as follows:
64. SKELETAL MUSCLES
Body location: it is usually attached to the bone or to the skin.
Microscopic anatomy: it is made up of very long, cylindrical multinucleated cells which are striated.
Regulation of contraction: the nervous system controls the voluntary contraction of the skeletal muscles.
Speed of contraction: the speed of contraction ranges from slow to fast.
Rhythmicity: the skeletal muscle is arrhythmic.
SMOOTH MUSCLES
Body location: found in the wall of hollow visceral organs [not including those of the heart].
Microscopic anatomy: made up of single fusiform, uninucleated cells that are without striation.
Regulation of contraction: smooth muscles undergo involuntary contractions which are controlled by the nervous system and hormones.
Speed of contraction: very slow. it is the slowest of the three muscles.
Rhythmicity: rhythmic.
CARDIAC MUSCLES
Body location: located in the wall of the heart.
Microscopic anatomy: it is composed of branching chains of cells, that are uninucleated; they are striated and posses intercalated discs.
Regulation of contraction: Undergo involuntary contractions, which are controlled by nervous system, heart pacemarker and hormones.
Speed of contraction: slow.
Rhythmicity: rhythmic.
65. Aging brings about gradual loss in muscle functions. As one grows older, there are usually age related alterations in the skeletal muscle functions. The factors that affect the rate of muscle loss are sex and level of muscle activity. Loss of muscle mass also occurs as one grows older.
66. The sliding filament theory states that, during contraction the thin filaments slide past the thick filaments and the sacomere shortens.
During contraction, the myosin head attaches to the myosin binding site on the actin filament. Using energy from ATP, the myosin head move toward the center of the sacomere, attaching and detaching several times. As a result of this, the thin actin filament is pulled toward the center of the sacomere. This leads to the shorten of the muscle cells.
Class 1 (Explosives) is the class of hazards that is characterized by thermal and mechanical hazards in the form of blast pressure waves, shrapnel and fragmentation, and incendiary thermal effects.
There are different classes of Hazards
Class 1 - Explosives
Class 2 - Gases
Class 3 - Flammable liquids
Class 4 - Flammable solids
Class 5 - Oxidizers
Class 6 - Toxic materials
Class 7 - Radioactive materials
Class 8 - Corrosive materials
Class 9 - Miscellaneous dangerous goods
Any substance or item, including<u> a gadget</u>, that is intended to function by explosion or that, <u>through a chemical reaction</u> inside itself, is capable of functioning similarly even if not intended to function by explosion, falls within the category of explosive materials (class 1).
Hence, Class 1 (Explosives) is the class of hazards that is characterized by thermal and mechanical hazards.
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Answer:
Explanation:
Note : the questions do not come in the right order.
Data:
Mass = 0.0518kg
Velocity = 45 m / s
Distance (s) = 0.44m
C) what's the acceleration on the ball?
Using equation of motion,
V² = u² + 2as
V² - u² = 2as
a = (v² - u²) / 2s
a = (45² - 0) / 2 * 0.44 [the ball was at rest]
a = 2025 / 0.88
a = 2301.136m/s²
D) The net force on the ball?
Force = mass * acceleration
F = m*a
F = 0.0518 * 2301.136
F = 119.199N
The force acting on the ball was 133.465N
F = 133.47N
b) time period the ball was struck.
From the relationship between impulse and momentum,
Ft = m * v
133.47 * t = 0.058 * 45
t = 2.61 / 133.47
t = 0.01955s
a) average velocity (V) = total distance covered / total time taken
V = s / t
V = 0.44 / 0.01955
V = 22.50m/s.
e) if the ball was heavier and still experienced the same velocity, the applied would've been lesser than before.
Answer:
0 MN/C, 2.697 MV
4.1953 MN/C, 1.2586 MV
19.2642857143 MN/C, 2.697 MV
Explanation:
k = Coulomb constant =
Electric field at r = 8 cm
E = 0 (inside)
Electric potential is given by
Electric potential is 2.697 MV
r = 30 cm
Electric field is 4.1953 MN/C
Electric potential is 1.2586 MV
r = R = 14 cm
The electric field is 19.2642857143 MN/C
The potential is 2.697 MV