what is the acceleration of an object if the object has an initial speed of 230 m/s and speeds up to 650 m/s. The time it takes for this to happen is 30 seconds

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

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.

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)