In a meeting of mimes, mime 1 goes through a displacement d1 = (6.00 m)i + (5.74 m)j and and mime 2 goes through a displacement d2 = (-2.92 m)i + (2.9 m)j. What are

a. |d1 × d2|,
b. d1 · d2,
c. (d1 + d2) · d2,
d. The component of d1 along the direction of d2?

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?