2. A man walks 38 m west from home, rest, then walks 20 m east. What is the man's displacement?

Distinguish between constructive wave interference and destructive wave interference.

Plate tectonics is the scientific theory explaining the movement of the earths crust. The movement of these tectonic plates is likely caused by convection currents in the molten rock in earths mantle below the crust.

How do the weights of the tug of war teams affect the match

A 0.013-kg record with a radius of 15 cm rotates with an angular speed of 28 rpm. find the angular momentum of the record.

Balance KOH+AlCl3 - - > Al (OH) 3 + KCL

Why are some craters on the moon bigger than others

What object oriented feature can we use to have a single test program, with one set of method calls in which the user can decide which bag implementation (array - or link-based) needs testing?

What might motivate someone to study forensics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. If r = 17.

A mass spectrometer accelerates doubly ionized atoms of charge 2e over a potential difference V before they enter a uniform magnetic field B which is perpendicular to the direction of motion of the ions.