An astronaut is standing at the north pole of the planet. In her hands she holds a container full of a liquid with mass m and volume V. At the surface of the liquid, she measures a pressure of p0; at a depth d below the surface of the liquid, she measures a greater pressure of p. Determine the mass of the planet using the given information.

In what direction does an applied force move an object

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47