Dos cuerpos de 1 kg y 2 kg descansan sobre un plano horizontal y un plano inclinado 30°, respectivamente, unidos por una cuerda que pasa a través de una polea. Halla: a) La tensión de la
cuerda y la aceleración del sistema suponiendo que no hay rozamiento. b) Haz el mismo cálculo
suponiendo que en los dos planos existe un coeficiente de rozamiento cinético μK = 0,34.
Sol: 3,27 N; 3,6 N.

What if? if the temperature near the cliff suddenly falls to 0°c, reducing the speed of sound to 331 m/s, what would the initial speed of the rock have to be (in m/s) for the soccer player to hear the sound of the splash 2.90 s after kicking the rock?

What should the power status of a circuit be when measuring resistance with an ohmmeter?

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.