Answer:
A compass can detect a magnetic field and show its direction. Iron filings can show the shape of a magnetic field. A gaussmeter can detect a field and indicate its strength.
Explanation:
Complete Question
The complete question is shown on the first uploaded image
Answer:
The pressure difference of the first bubble is 
The pressure difference of the second bubble is 
The pressure difference on the second bubble is higher than that of the first bubble so when the valve is opened pressure from second bubble will cause air to flow toward the first bubble making is bigger
Explanation:
From the question we are told that
The radius of the first bubble is 
The radius of the second bubble is 
The surface tension of the soap solution is 
Generally according to the Laplace's Law for a spherical membrane the pressure difference is mathematically represented as

Now the pressure difference for the first bubble is mathematically evaluated as

substituting values


Now the pressure difference for the second bubble is mathematically evaluated as



<span>Answer:
Chlorine has 17 electrons therefore for 1+ and 2+ we need the atoms that have 18 and 19 electrons these are argon and potassium: Ar+ and K 2+
For 1- and 2- we need the atoms that have 16 and 15 electrons and these are sulfur and phosphorus, S- and P 2-.
Note that + ions imply the loss of electrons and - ions equate to the gain of electrons.</span>
Answer:
A. put water in a container under the pot water will disappear from the container .
Assuming that they are
pulling the space shuttle straight up, and that this is done on the surface of
the earth, where gravity is equal to 9.8 m/s^2. So taking the average pull force
of a person to be 110 kg, then: <span>
110 kg/person * 9.8 m/s^2 = 1078 kg*m/s^2, or 1078 N/person
(Newtons). </span>
1 Newton is about 0.225
lb. So, 1078 N/person * 0.225 lb/N = 242.34 lb/person. <span>
So if the space shuttle weighs 4,500,000 lb, then it would
take 4,500,000 lb / (242.34 lb/person) = 18,569 people. </span>
Answer:
<span>18,569 people</span>