Answer:
when a magnet is hanged freely in air it turns in the direction of the north and south while the magnetic north pole faces the south pole of the earth and magnetic south pole faces the north pole if the earth
Answer:
You will need 7.953 kJ heat energy to raise the temperature of water from 277K to 315K.
Explanation:
To calculate how much heat is needed to raise the temperature of any substance, you need:
The mass of the substance, m, which for you is 50.0 g
The temperature change that occurs, ΔT, which for you is:
Δ
The specific heat capacity of the substance, c,
For water, the value of c is 4.186J/gK
Then, this is the equation you need:
ΔT
Where Q is the heat needed
So,
You need 7.953 kJ to raise the temperature of water from 277K to 315K.
The boat’s resultant velocity with respect to North is determined as 17 m/s.
<h3>Resultant velocity of the boat</h3>
The boat’s resultant velocity with respect to North is calculated as follows;
R² = Va² + Vb²
R = √(Va² + Vb²)
R = √(15² + 8²)
R = 17 m/s
Thus, the boat’s resultant velocity with respect to North is determined as 17 m/s.
Learn more about resultant velocity here: brainly.com/question/24767211
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Isn't that just normal body tissue?