Can someone help me with these two questions? Thank you to anyone who helps me within a week. 3. Tyler is running behind Nicole, who began 3.0 meters ahead of Tyler. At the end of 30.0 minutes, Nicole is 11.0 meters ahead of Tyler. Assuming they run at a constant speed, by what factor is Nicole running faster than Tyler? 5. If an object A is travelling at a constant but different speed from an object B (which is also travelling at a constant speed), how would the speed of object A compare to that of object B if measured by object B, and vice versa? Think of the different scenarios and reference points. Answer in complete sentences.

1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev

Why does lightning travel from clouds to the ground?

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.