Mass M is uniformly distributed along a line of length 2L. A particle with mass m is at a point P distance a above the center of the line on its perpendicular bisector. For the gravitational force that the line exerts on the particle, calculate the components perpendicular and parallel to the line. Show that your result reduces to the correct value when a gets large.

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.

The inner planets or call terrestrial because they