A cube of metal with an edge of 0.013 m that is placed in salt water. The density of the metal is 7.86 × 103 kg/m3, and the density of the salt water is 1.025 ´ 103 kg/m3.what buoyant force acts on the metal?

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?