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A uniform disc of radius 30 cm and mass 12 kg is pivoted so that it is free to rotate about an axis through its center. A string wrapped around the disc is pulled with a force of 80 N. What is the acceleration of the disc?
An airplane is flying with a velocity of 89.0 at an angle of 18.0 above the horizontal. When the plane is the distance 112 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog wo..
A block of mass 4.6 kg slides 15 m from rest down an inclined plane making an angle of 28 o with the horizontal. what is the retarding force due to friction
1 explain why an object too far from the motion detector will produce an incorrect distance reading?2 look up an
One yoga exercise, known as the "Downward-Facing Dog," requires stretching your hands straight out above your head and bending down to lean against the floor. Find the normal force that the floor exerts on each foot
A 4.29-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box, Determine the kinetic frictional force that acts on the box
Light of wavelength 500 nm illuminates a 0.5 mm diameter hole. A screen is placed 6.0 m behind the slit. What is the width of the central maximum on the screen in mm
If an electroscope is charged by induction
the scientific method is useful in problem solving and decision-making in a wide variety of fields. in this
Consider a series LRC circuit with R=21 ?, L=0.29 H and C=0.4 µF. The current is 14 mA amplitude at 1.6 kHz. Find the angular resonant frequency of oscillations
A possible means of spaceflight is to place a perfectly reflecting aluminized sheet into Earth orbit and use the light from the sun to push this solar sail. what would be the force exerted on the sail
A winch capable of pulling 250 lb must pull a 2800 lb load up a ramp of height 5.5 ft. Find the length of the shortest ramp for this job
A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. how fast will the same truck move down the hill
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