Which term best describes the phrase “a description of what happens in nature”? a. theory b. conclusion c. experiment d. law

Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest

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.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87