Engineers refine their ideas by making sketches and models.
Answer:
Fg = G M m / R^2 gravitational attraction
Fe = k Q^2 / R^2 electric repulsion
G M m = k Q^2
Q = (G M m / k)^1/2
Since m = .0123 M
Q = (.0123 G / k)^1/2 * M
Q = (.0123 * 6.67 * 10E-11 / 9 * 10E9)^1/2 * 5.98 * 10E24
Q = 5.71 * 10E13 C charge required on each body
n = 5.71 * 10E13 / 1.6 * 10E-19 = 3.57 * 10E32 atoms
N = 3.57 * 10E32 / 6.02 * 10E23 = 5.93 * 10E8 g-mol = 5.93 * 10E*5 kg-mol
Since 1 metric ton = 1000 kg
One would need 593 metric tons of hydrogen
Answer:
Positive charge is attracted to the neutral object.
Explanation:
Recall ; Like charges repel, unlike charges attract. This phrase simply means (positive (+) is attracted to negative (-ve) and vuc versa while both positive, positive and negative, negative charge repel.
For a neutral object. The quantity of positive charge equals the quantity of negative charges. This simply means a neutral object contains charges as well, which are usually scattered or randomly aligned.
Therefore, when a positive charge is brought near a neutral body, the order of alignment of the charges change, with the negative charge all moving towards the direction of the positively charged body and the positive charges in the neutral body aligning in the opposite direction.
Answer: 18.9 calories
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
Q = Heat absorbed
m= mass of substance = 1.0 g = 0.001 kg
c = specific heat capacity of aluminium =
Initial temperature = = 847 K
Final temperature = = 933 K
Change in temperature ,
Putting in the values, we get:
(1J=0.24cal)
The number of calories required for this heat up process is 18.9 calories.
Answer:
Diabetic Retinopathy is a form of diabetes that affects the eyes. It can be caused by damage to the retinas, and can cause permanent damage to the eyes, and even blindness. Initially the patient is asymptomatic and become more visibly affected in later stages. It can be treated if caught early, or in mild cases.
Explanation: