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When a spacecraft travels from the Earth to the Moon, both the Earth and the Moon exert a gravitational force on the spacecraft. Eventually, the spacecraft reaches a point where the Moon's gravitational attraction overcomes the Earth's gravity. How far from the Earth's surface must the spacecraft be for the gravitational forces from the Moon and the Earth to just cancel?
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A roof tile falls from rest from the top of a building. How far abovethe top of this window is the roof
A particle with mass 1.81×10?3kg and a charge of 1.22×10?8C has, at a given instant, a velocity v? =(3.00×104m/s)j^, Find the acceleration vector for the charge
At one point in a pipeline the water's speed is 3.00m/s and the gauge pressure is 5.00x10^4Pa. Find the gauge pressure at a second point in the line
The positively charged plate of a parallel-plate capacitor has a charge equal to Q. When the space between the plates is evacuated of air, What is the dielectric constant of the material
In an ice show a 45.0 kg skater leaps into the air and is caught by an initially stationary 85.0kg skater. What is their final velocity assuming negligible friction and that the leaper's original horizontal velocity was 4.00 m/s
One component of a magnetic field has a magnitude of 0.028 T and points along the +x axis, Find the magnitude of the net magnetic force that acts on the particle
A 50 kg ballet dancer stands on her toes during a performance with four square inches (26.0 cm2) in contact with the floor. What is the pressure exerted by the floor over the area of contact (a) if the dancer is stationary and (b) if dancer is lea..
The total electric flux from a cubical box 11.0cm on a side is 1580 N*m^2/C. what is the charge on the enclosed box
In an experiment, a 1.5 kg lab cart moving to the right at 0.080 m/s collides with a 0.5kg lab cart moving to the right at 1.3 m/s. How fast is the 0.5 kg lab cart moving after the collision
A diffraction grating has a line density of 580 . This grating produces a 1st order maximum at a distance of 2.52 from the central maximum on a screen which is 5.40 away
A hot air balloon is rising upward with a constant speed of 5 m/s. How high above the ground is the balloon when the compass hits the ground
Neutron stars consist only of neutrons and have unbelievably high densities. Find the density of such a star
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