Explanation:
It is given that, the metal with the highest melting temperature is tungsten which melts at around 3400 K, T = 3400 K
We need to find the wavelength of the peak of the black body distribution for this temperature. It can be calculated using Wein's displacement law as :
k is the constant, 
or
The wavelength of infrared is from 700 nm to 1 mm. So, the lies in infrared region of the spectrum. Hence, this is the required solution.
The negative charge distribution that surrounds the nucleus of an atom is due to the atom's electron cloud. As the electrons move around a molecule, it can make a certain position, for an instant, look negative when the electrons are on one side and when they are away from this side it can look positive. This can cause intermolecular attraction and is known as the London Dispersion force of attraction.
Answer:
The three machines that the human can used for designed is wheel axle , lever, inclined plane etc,...
Explanation:
Answer:
A) A humidity level of 90 percent is too high.
Explanation:
A humidity level of 90% is too high . It reflects real or possible situation .
Atmospheric temperature between 20 - 30 degree makes comfortable weather. 70 or 80 or 90 degree atmospheric temperature is impossible to achieve on the earth in normal case. The maximum temperature upto which
atmospheric temperature has gone is 55 degree .
So all the other statements appear to be false.
Explanation:
It is given that,
Speed of an automobile is 25 km/h or 6.95 m/s
Kinetic energy of the automobile is 
(a) Kinetic energy of automobile s given by :
(b) If the velocity of the car is increased to 45 km/hour or 12.5 m/s, new kinetic energy becomes :
(c) If the velocity is increased to 80 km/hour, 22.23 m/s, So
Hence, this is the required solution.
