As seen in the animation, in order to shape a 630.85g piece of steel (SHC = 500 J/kg*OC), you need to heat it up to the point where it is glowing red, which is about 429 OC. Once you have it to the shape you want, you need to cool it down by putting it in a 2.42L tub of water. If the final temperature is 37OC, what is the initial temperature of the water?

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency