Two tractors pull against a 1000 kg log. if the angle of the tractors' chains in relation to each other is 18.0° (each 9.0° from being parallel with the log) , and each tractor pulls with a force of 800 n, what forces will they be able to exert? a. 250 nb. 1520 nc. 1580 nd. 1600 ni'm 80% sure it's c but i don't know how to go about calculating the answer. any is appreciated.

Ineed the answers for these promblems i have

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?