a una pulsera de oro se le agregan 51 cal de calor lo que provoca que su temperatura suba de 20°c a 37°C. Determine la masa de la pulsera

25pts the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?