A Fixed mass of gas omits 250J at heat energy and contracts at constant pressure of Ix10 Pa from 2.5 from 2.5x10^3m^3 to 1.0x10^-3m^3. what is the change in internal energy U?

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.