Can the sum of the magnitudes of two vectors ever be equal to the magnitude of the sum of the same two vectors? if no, why not? if yes, when?

a-no, because of the angle between the two vectors.
b-no, it is impossible for the magnitude of the sum to be equal to the sum of the magnitudes.
c-yes, if the two vectors are in the same direction.
d-yes, if the two vectors are perpendicular.
e. yes, if one of the vectors is zero.

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

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

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius