URGENT VA ROG. O sursa sinusoidala, plasata la captul unei corzi orizontala, genereaza unde transversala prin deplasarea capatului liber in sus si in jos pe o distanta de 8 cm, miscarea este continuua si repetata periodic de 4 ori pe sec, coarda are lungimea de 4 metri, masa totala de 120g si este intinsa cu o tensiune T = 12 N a) Calculeaza viteza , perioada si lungimea de unda a miscarii ondulatorii
b)Scrie ecuatia undei plane care se propaga in coarda

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.