One tuning fork vibrates at 440 Hz. When sounded with an unknown tuning fork, you hear a tone that rises and falls in intensity 3 times per second. What is the frequency of the second fork

It is necessary to determine the specific heat of an unknown object. the mass of the object is 201.0g it is determined experimentally that it takes 15j to raise the temperature 10°c. what is the specific heat of the object? 3,020,000 j/kg ∙ k 1500 j/kg ∙ k 0.00130 j/kg ∙ k 7.46 j/kg ∙ k