The table shows the specific heat capacities of various substances. Which substance requires the least energy to heat it by 1°C? Enter your answer
Material
Specific heat capacity in J/kg °C
Water
4186
Copper
385
Concrete
850
Iron
450
Silver
233
Air
1005

nose

=)

Explanation: por que nose

=(

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.