When performing a melting point on a solid compound, 2 melting point determinations were made. one sample, which was 1 mm in height in the capillary, possessed a melting point of 250-251°c. the other sample was 25 mm in height. what would you expect the approximate melting point to be for this 25 mm sample, if the heating rate for both samples was 2 degrees per minute? (hint: use algebra to solve the mp range) 4. 5. for the same solid compound as the question above, if the 1 mm sample was heated at 15 per minute on a gallenkamp melting point apparatus, what would you expect for an approximate melting point? (algebra may be used again! )

coil wire, increase current, put iron inside the coil

it is the second option.

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.