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Firlakuza [10]
3 years ago
12

A 3.0 g aluminum foil ball with a charge of 3.0×10−9C hangs freely from a 1.4 m-long thread. What angle with the vertical the eq

uilibrium position of the string makes?
Physics
1 answer:
ra1l [238]3 years ago
8 0

Answer:

0 degree

Explanation:

Mass of aluminium foil=m=3 g=\frac{3}{1000}=0.003 kg

1 kg=1000 g

q=3\times 10^{-9} C

Length of thread=l=1.4 m

We have to find the angle made by the string with the vertical equilibrium position.

The ball hang freely therefore, there is no field present.

The angle made by equilibrium position of the string with the vertical is zero because it is influenced under the acceleration due to gravity of earth and equilibrium position  lies along the vertical axis.

Hence, the angle made by the equilibrium position of the string =0 degree

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What is the formula of the compound between calcium and sulfur that has the percent composition 55.6?
Yanka [14]

CaS is the empirical formula of the compound between calcium and sulphur that has the percent composition 55.6.

When percentages are given, we take a total mass of 100 grams.

Therefore the mass of each element is equal to the percentage given.

Mass of Ca = 55.6 g (given) of

S Mass = 44.4 g (100 - 55.6 = 44.4)

Step 1: Convert the given mass to moles.

moles Ca = given mass Ca / molar mass Ca

moles = 55.6 / 40 = 1.39 moles

mol S = specific mass S / molar mass S

mol = 44.4 / 32 = 1.39 mol

Step 2: Divide the molar ratio of each molar value by the smallest number of moles calculated.

For Ca = 1.39 / 1.39 = 1

For S = 1.39 / 1.39 = 1

The ratio of Ca : S = 1:1

Hence the empirical formula of the given compound will be CaS.

Learn more about empirical formula here : brainly.com/question/1496676

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8 0
1 year ago
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maxonik [38]

probabilityAnswer:

2/27

Explanation:

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songbird = 4/18

mice = 6/18

4/18*6/18 = 2/27

5 0
2 years ago
The relationship between a cathode and an anode involves
astra-53 [7]
It involves electrons.

The cathode is the electrode where electron deficient ions move to.

While the anode is electrode where electron excess ions move to.

So the relationship between Cathode and Anode involves electrons.

C.
5 0
3 years ago
I believe Newton's 1st law is
Bogdan [553]

Answer:

The first law states that if the net force is zero, then the velocity of the object is constant.

5 0
3 years ago
Assume the ground is uniformly level. If the horizontal component a projectile's velocity is doubled, but the vertical component
Katarina [22]

Answer:

Explanation:

Time of flight = 2 x u sinα / g where u sinα is vertical component of projectile's velocity u .

So Time of flight = 2 x vertical component / g

vertical component = constant

g is also constant so

Time of flight will also be constant .

It will remain unchanged .

3 0
3 years ago
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