Six objects are placed in a 500∘f (260∘c) oven and allowed to reach thermal equilibrium. each object has a mass of 1.0 kg. the specific heat and thermal conductivity of each substance are denoted by c and k. part a rank these objects on the basis of their temperatures when removed from the oven. rank from largest to smallest. to rank items as equivalent, overlap them. view available hint(s)

The position of a dragonfly that is flying parallel to the ground is given as a function of time by r⃗ =[2.90m+(0.0900m/s2)t2]i^− (0.0150m/s3)t3j^. a: at what value of t does the velocity vector of the insect make an angle of 34.0 degree clockwise from the x-axis? b: at the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? c : at the time calculated in part (a), what is the direction of the acceleration vector of the insect?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.