Por ejemplo, si una persona de 70 kg come mucho helado y pastel, que le aportan 5,0 x〖10〗^5 cal y desea compensar este valor, debe hacer una cantidad de ejercicio. Si para esto sube escaleras, y por cada escalón quema 28 J de energía, entonces, ¿cuántos escalones debe subir para quemar las calorías consumidas? ayuda por favor

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Acorporation gives out its profits as dividends paid to whom?

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?