Answer:
The value is
Explanation:
From the question we are told that
The length of the string is
The mass is 
The frequency produced at fourth harmonic vibration(i.e n =4 ) is 
Generally the wavelength of the string is mathematically represented as

=>
=>
When the elevator is going up (assuming the elevator is acceleration)
When the elevator is accelerating downwards, the total gravitational force would be larger.
If the elevator is accelerating upwards, then the gravitation force would be smaller, thus the tension in the string would be smaller.
Answer:
Ration of internal energy of hydrogen to the internal energy of helium is equal to 
Explanation:
As we know
degree of freedom of hydrogen is 5
Degree of freedom of helium is 3
Internal energy of hydrogen

Internal energy of helium

Ration of internal energy of hydrogen to the internal energy of helium is equal to 
Answer:
See the answer below
Explanation:
The optimal conditions for high biodiversity seem to be a <u>warm temperature</u> and <u>wet climates</u>.
<em>The tropical areas of the world have the highest biodiversity and are characterized by an average annual temperature of above 18 </em>
<em> and annual precipitation of 262 cm. The areas are referred to as the world's biodiversity hotspots. </em>
Consequently, it follows logically that the optimal conditions for high biodiversity would be a warm temperature of above 18
and wet environment with annual precipitation of not less than 262 cm.
The variation in temperature and precipitation across biomes can thus be said to be responsible for the variation in the level of biodiversity in them.