[ Answer ]
It would be very confusing and date and calculations would be off and inaccurate
[ Explanation ]
If scientists didn't use the SI system, then all the calculations and data they would send to each other would be mixed up and confusing. If Americans used one metric system and The Chinese used another metric system, converting the data would be inaccurate and take way to much time. Everyone would have their own idea for what is right, and no one would have a clue what other people meant.
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Answer:
Bladder: A temporary storage place for urine
Ureter: Tube that carries urine from the kidneys from the bladder
Nephron: functional unit of the kidney.
Urethra: Exit way for urine out of the body.
Kidney: filters waste from the blood.
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Answer:
1. Velocity match with B
2. Speed watch with E
3. Gravity match with C
4. Deceleration match with A
5. Newton match with D
Explanation:
1.)
Velocity is defined as the time rate of change of displacement. It is a vector quantity. So it has certain direction as mention in option B. So B is the correct matching.
v = Δd/Δt
2.)
Speed is defined as the time rate of change of distance. It is a scalar quantity. It is same as velocity but only difference is that velocity has magnitude as well as direction but speed has only magnitude. As in option E, direction not mentioned. So E is the correct matching.
3.)
Gravity is the force of attraction between any two objects, two masses. It is not only the force between body and the Earth but it is the force that exist between any two bodies in the universe. C is the correct matching.
4.)
Deceleration is actually the acceleration but in the opposite direction. It is also called negative acceleration. When the velocity of the object increasing it is acceleration and when velocity decreasing it is called deceleration. It is always opposite direction to velocity. So A is the correct matching.
5.)
Newton is the name of the scientist. Also it is the unit of force in metric system. Here newton means unit of force because n of newton in small letter. From Newton's second law of motion
F = ma
= (kg)(m/s²)
= N
Thus,
N = kgms⁻²
Option D is correct matching.
Answer:
q = -2.19 x 10⁻⁵ C
Explanation:
Given;
mass of the particle, m = 1.5 g = 0.0015 kg
magnitude of electric field, E = 670 N/C
Electric field is given by;
where;
q is the magnitude of the
f is the force of the charge
f = mg
Since the electric field is acting downward, the force on the charge must be acting upward. Therefore, the charge must be negative
q = -2.19 x 10⁻⁵ C