STEVEN W.

The filament of a light bulb has a resistance of 20.0 Ω at 20oC and 160 Ω when the light is on. Find the temperature of the filament when the light is on. (The temperature coefficient of... more

An object is placed on a ramp which makes an angle of 25º with the horizontal. If the object accelerates at a rate of 3.0 m/s2 down the ramp, what is the coefficient of friction between the object... more

Both thermosetting and thermoplastic polymers have strong covalent bonds within the polymer chains. What is the difference in bonding between the chains? 

For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself. Keep in mind that NH3 is a weak base. 1.0 mol of HCl is added to 1.0 L... more

A 100 W sodium lamp gives off light with a wavelength of 589 nm uniformly in all directions. A totally absorbing screen is placed at a distance of 10 km from the lamp. If the screen has an area of... more

Calculate the concentration of KIO3 in the final mixture for each of your dilutions. Remember that the origional KIO3 was 0.200M and that the original dilution, when mixed with 10 mL of solution B,... more

solve the equation analytically5x = −2

5c/c-d+5d/d-c Please show me the steps to solve this problem.

Two cars start moving from the same point. One travels south at 16 mi/h and the other travels west at 12 mi/h. At what rate is the distance between the cars increasing four hours later?