What is the distance from the center of the Moon to the point between Earth and the Moon where the gravitational pulls of Earth and Moon are equal in magnitude?
The mass of Earth is 5.97 × 1024 kg, the mass of the Moon is 7.35 × 1022 kg, the center-to-center distance between Earth and the Moon is 3.84 × 108 m, and G = 6.67 × 10-11 N ? m2/kg2.
A) 3.45 × 108 m
B) 3.84 × 107 m
C) 4.69 × 106 m
D) 3.83 × 106 m
E) 4.69 × 107 m
B
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Assuming a linear velocity distribution and a linear temperature distribution in the boundary layer over a flat plate, derive a relation between the thermal and hydrodynamic boundary-layer thicknesses and the Prandtl number.
GIVEN
Boundary layer over a flat plate
FIND
A relation between the thermal and hydrodynamic boundary-layer thicknesses and the Prandtl number
ASSUMPTIONS
Linear velocity and temperature distributions in the boundary layers
SKETCH
A thin metal sheet in the xy plane carries current in the ?y direction. What is the direction of the magnetic field everywhere in the region above the sheet? 
in this case
A. points in the +x direction. B. points in the ?x direction. C. points in the +y direction. D. points in the ?y direction. E. points in the +z direction. F. points in the ?z direction. T. is zero.
Which correctly represents the orientation of the electric field, magnetic field, and direction of propagation for an EM wave?
When a 14.0-A current flows through an 8.00-? device for 24.0 hours, how much does this cost if energy costs $0.0900 per kW ? h?
A) $0.24 B) $3.39 C) $2.16 D) $1.04