Two boxes m_1 and m_2 are connected by a lightweight cord and sitting on a frictionless surface. A horizontal force of 66 N pulls on box m_1 and then m_2 is pulled along.

If the acceleration of the boxes is 2.2 m/s^2 and the mass of m_1 is 12 kg. Find the mass of m_2.

a. 12 kg

b. 18 kg

c. 30 kg

d. 48 kg

e. 42 kg

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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i don't understand. explain it clearly

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).