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At a distance of 14000 kilometer from some planet's center, the acceleration of gravity is 32 m/s2. Estimate what is the acceleration of gravity at a point 28000 kilometer from the planets center?
The earth orbits the sun once per year at the distance of 1.50 x 1011 m. How long (in earth days) does it take for Venus to make one orbit
A 1200g model rocket is resting horizontally at the top edge of a 40-m-high wall when it is accidentally bumped, How far from the base of the wall does the rocket land
A man walks at 3 m/s on a still day along the line between two fire stations. Find the apparent frequency of each whistle
A mass m slides in the bottom of a hemispherical bowl of radius R under the influence of gravity. Find the constraint force
A stone dropped into a pond generates a travelling wave group approximately 1 m long; the waves within the group have a wavelength of about .1 m Estimate the range of the wavevector spectrum representing the group.
A hollow, thin-walled sphere of mass 13.0kg and diameter 45.0 cm is rotating about an axle through its center. At the time 4.00s, find the angular momentum of the sphere
A force in the +y direction applied at the point x=2.3 meter, y=1.4 meter gives rise to a torque of 66 N•m about the origin. Estimate what the magnitude of the force
A transverse wave on a string is described by the equation y(x, t) = (2.30 cm) sin[(100 rad/s)t + (18 rad/s)x]. How fast does the wave move along the string
A 2.94g aluminum bullet at 31.0°C is fired at a speed of 236 m/s into a large block of ice at 0°C, in which it embeds itself. What quantity of ice melts
A horizontal force does 50 J of work on a box, while the kinetic friction force, between the box and the floor, What is the cange inn the box's kinetic energy
Consider a pipe of length 80.0 open at both ends. What is the lowest frequency of the sound wave produced when you blow into the pipe? A hole is now drilled through the side of the pipe and air is blown again into the pipe through the same opening...
a 0.1kg ball is attached to a string and whirled around in a circle overhead. the string breaks if the force exceeds
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