Match the term to its description. match term definition prominences convection sunspots solar flares a) streams of glowing gas that shoot out from the sun in an arch b) the rise of hotter, less dense fluid and the sinking of cooler, denser fluid c) brief eruptions of intense high-energy radiation from the sun's surface d) dark spots appearing from time to time on the sun's surface

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m.the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

Explain what makes a passenger in a turning car slide toward the door. critical thinking

While carrying a heavy box up the stairs,you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.