a piece of metal with a mass of 22 g at 92 °c is placed in a container containing 70.3 g of water at 21 °c. the final temperature of the mixture is 25.4 °c. what is the specific heat capacity of the metal? assume that there is no energy lost to the surroundings.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

Awave that is traveling fast can be said to have a high a. frequency b. speed c. wavelength d. amplitude e. period f. none of these