7C3H5(NO3)3 is an interesting, multi-purpose chemical compound. Nitroglycerin, also called nitro, is a heavy, colorless, poisonous, oily explosive. As a prescribed drug, it
helps relax and dilate blood vessels and is often used in treating chest pain. It is also
used in the manufacture of explosives, specifically dynamite, and is frequently used in
construction and demolition projects. How many atoms of oxygen are in a molecule
of nitroglycerin?

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?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.