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How many excess electrons must be placed on each of two small spheres spaced 3cm apart if the spheres are to have equal charge and if the force of repulsion between them is to be 10โ19๐?
A negative charge of โ0.50 ร 10โ6๐ถ exerts a repulsive force of magnitude 0.20 N on an unknown charge 0.20 m away. What is the unknown charge (magnitude and sign)?ย
Two charges are located on the positive x-axis of a coordinate system. Charge ๐1 = 2 ร 10โ9๐ถ is 2cm from the origin, and charge ๐2 = โ3 ร 10โ9๐ถ is 4cm from the origin. What is the total force exerted by these two charges on a charge ๐3 = 5 ร 10โ9๐ถ located at the origin?
In a closed economy
Y= c+i+g
C= 900+0.5(y-t)
I= 700-30r
T= 800
G= 1200
Md=Ms
Ms=1500
Mt=0.7y
Msp= -80r
Derive the IS and LM equations of the economy.( Express y as a function of r and assume p is fixed at 1.0)
Calculate the short run equilibrium values of y and r in the economy.
How many grams of dilute is present in 0.4 moles magnesium hydroxie, Mg (OH)2 in 559 g water, H2O? molar mass of Mg (OH)2 is 58 g / mol
If 0.590% solution of Na2CO3 will be used to precipitate Ca+2 from solution, determine the amount of solution, in grams needed to percipitate 5.00x102mL of 0.01120M Ca+2
1.ย ย ย ย Show thatย are logically equivalent. P โ Q and (P โง Q) V ( ยฌP โง ยฌQ)
:Calculate the sum of all elements in given matrix.
44 85 20 33 -18
56 35 67 -2 -54 45
44 42 56 -76 90
-56 78 -14 79 11 33 in java
25.0 grams of sodium chloride (NaCl) is dissolved in 100 grams of solution. What is the concentration of the solution in parts per million (ppm)?
Two identical 15.0-kg balls, each 25.0 cm in diameter, are suspended by two
35.0-cm wires. The entire apparatus is supported by a single 18.0-cm wire,
and the surfaces of the balls are perfectly smooth.
a) Find the tension in each of the three wires.
b) How hard does each ball push on the other one?
#339914 on Dec 2023