Puterea dezvoltată de un delfin, care înoată cu viteza de 12km/h, este 100kW. Să se determine :a) forța de rezistență pe care apa o opune înaintării delfinului. b) lucrul mecanic efectuat de delfin în 20 minute.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

In all trials, the magnitude of the final velocity for g1 + g2 was less than the magnitude of any initial velocity. as mass increased, what happened to the velocity? the velocity decreased. the velocity increased. the velocity of g1 + g2 could not be measured. the velocity was not affected by the mass increase.

What is the most useful equation for electric power?