If a typical smelt weighs 225 g, what is the total mass of pcbs in a smelt in the great lakes?

While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.368. The pushing force is directed downward at an angle θ below the horizontal.

When are the displacement and acceleration equal to zero for the motion of a mass on a spring? OA at maximum displacement OB at minimum displacement 0 at the equilibrium position OD at a displacement of 2x 0 at a displacement of - X

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob's trajectory. ~a is equal to the instantaneous rate of change in velocity.

What kind of energy is stored in a flashlight battery and enables it to function? Mechanical Chemical Gravitational Electrical

When a person inhales, air moves down the bronchus (windpipe) at 14 cm/s. the average flow speed of the air doubles through a constriction in the bronchus. assuming incompressible flow, determine the pressure drop in the constriction.

Physical Properties include ... A. taste, odor, and is corrosive B. taste, texture, and forms hydrogen gas. C. taste, odor, and texture D. texture, odor, and is corrosive

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 441J of energy to the room?

What is the difference between convex and concave mirrors and lens?

Which is the best example of Newton's Second Law of Motion? A student has on roller skates and he decides to push against the railing. He immediately begins to roll backwards. A small ball and a larger ball with greater mass are dropped from a roof.

Which of the following represents a car traveling 20 miles/hour? 40 miles traveled in 2 hours 60 miles traveled in 6 hours 40 miles traveled in 3 hours 10 miles traveled in 5 hours