Answer:
plants because of photosynthesis humans because of food and the energy causing cells in it and batteries or solar panels because of the sun.
Explanation:
Sodium (Na) is a Alkali metal so that's the answer
Answer:
(d) 2930 lbs
Explanation:
Given:
Force acting in the westerly direction is,
Force acting in the northerly direction is,
Now, as the two given directions are at right angles to each other, the angle between the two force vectors is 90 degrees.
So, when two vectors are at right angles, their resultant magnitude is given as:
Plug in the given values and solve for resultant 'R'. This gives,
Therefore, the magnitude of the resultant force upon the piling is 2930 lbs.
So, option (d) is correct.
40% of the Earth's surface is covered by continental crust.
Answer:
option (a)
Explanation:
In an isothermal process, the temperature of the gas remains constant.
The internal energy of the gas is the function of change in temperature.
As the temperature is constant, so there is no change in the internal energy of the gas.
So, internal energy change is zero.