Apendulum bob is given some initial potential energy by raising it. next it is released. compare this maximum potential energy with the energy the pendulum bob contains at the lowest part of its path. a. it is equal to the heat energy produced as it fell. b. it is equal to the kinetic energy at the bottom of the swing. c. it is equal to the kinetic energy at the bottom of the swing plus the heat energy produced as it fell.

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?

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.