Identify the following as a suspension or a colloid. sand in water

Mary slides down a snow-covered hill on a large piece of cardboard and then slides across a frozen pond at a constant velocity of 2.40 m/s.

Two small identical conducting spheres are placed with their centers 0.32 m apart. One is given a charge of 12 ✕ 10-9 C, the other a charge of - 17 ✕ 10-9 C. (a) Find the electrostatic force exerted on one sphere by the other.

Which of the following is likely to have the lowest viscosity? hot oil room temperature oil room temperature water below room temperature oil Hot oil Room temperature oil Room temperature water Below room temperature oil

The furnace keeps houseAat 25◦C, while thefurnace in houseBkeeps it at 20◦C. Which house requires heat to be supplied by its furnace at a faster rate? 1. House B requires heat at a slightly faster rate than A. 2.

Suppose that, for the sphere in the video, instead of being told how fast the radius is changing, we're told that the volume is increasing at a constant rate of d V d t = 4 cubic centimeters per second.

Can a body be in equilibrium if only one external force act on its? explain

When sugar is poured from the box into the sugar bowl, the rubbing of sugar grains creates a static electric charge that repels the grains, and causes sugar to go flying out in all directions. If each of two sugar grains acquires a charge of 1.

You rub a clear plastic pen with wool, and observe that a strip of invisible tape is attacted to the pen. Assuming that the pen has a negative charge, which of the following could be true? Select all that apply.: A.

Magnet a has twice the magnetic field strength of magnet b and at a certain distance pulls on magnet b with a force of 100 n. the amount of force that magnet a exerts on magnet b is

A heavy sled and a light sled, both moving horizontally with the same speed, suddenly slide onto a rough patch of snow and eventually come to a stop.