Answer:
Explanation:
v² = u² + 2as
v = 0
u = 96 / 3.6 = 26.7 m/s
0² = 26.7² + 2a100
a = -3.5555555... ≈ -3.6 m/s²
the negative sign indicated the acceleration vector opposes the (assumed positive) initial velocity vector direction.
Answer with explanation:
We know that when we weigh ourselves on a scale the scale measures the Reaction force that acts between the scale and the person who wishes to determine his weight.
The free body diagram of the person on a weighing scale is represented in the attached figure.
As we can see for equilibrium
where,
R is the reaction force between the support and the person
W is the weight of the person which by definition is the force that the earth exerts on the person.
Thus according to the above relation we conclude that that support force of the scale is equal to the gravitational force in magnitude but is opposite in direction.
Answer: A: wear several thin layers and a waterproof top layer
Explanation:
A. NaCl (salt) because it is an ionic compound which will dissociate in water and make the water conduct electricity
Explanation:
Sodium chloride (NaCl) is an ionic compound and when is dissolved in water sodium (Na⁺) and chlorine (Cl⁻) ions are formed. The ions in water will promote the movement of electrical charges so the solution will conduct electricity.
Sugar (C₆H₁₂O₆) is a covalent compound and will not form ions when is dissolved in water. The sugar solution will not conduct electricity.
Learn more about:
conduction of electricity by ions
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