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In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. In one instance, the radius of the circle is 0.621 m. At one point on this circle, the ball has an angular acceleration of 63.9 rad/s2 and an angular speed of 12.3 rad/s.
(a) Find the magnitude of the total acceleration (centripetal plus tangential) of the ball.
(b) Determine the angle of the total acceleration relative to the radial direction.
The side mirrors on cars are convex mirrors. If the side mirror on the driver side of your car has a focal length with a magnitude of 5.30 m, determine the image distance of the truck
One liter of oxygen combines with 1 L of hydrogen to form 1 L of hydrogen peroxide. how many atoms are in one molecule of hydrogen peroxide
A 3.00-kg block starts from rest at the top of a 33.0° incline and slides 2.00 m down the incline in 1.75 s. Find the frictional force acting on the block
In a college parking lot, the number of ordinary cars is larger than the number of sport utility vehicles by 85.7%. Find the number of SUVs in the lot
Estimate the terminal speed of a wooden sphere (density 0.830 g/cm3) falling through air, if its radius is 8.00 cm and its drag coefficient is 0.500
An observer moving at a speed of 0.795 c relative to a rod (Fig. P26.14) measures its length to be 2.00 m, What is the proper length of the rod
question1a uniform bar of length 46 m and mass 3 kg is attached to a wall with a hinge that exerts a horizontal force
assume the current in the coaxial cable, see the figure , is not uniformly distributed, but instead the current density varies linearly with distance from the center: for the inner conductor and for the outer conductor. Each conductor still carrie..
A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back covers of the book are vertical to the book and are horizontal.
A 80 kg woman fell from an open window 0.5m above above a fairly soft shrub. Estimate the average stopping force of the shrub on the woman
A 50 turn square coil has an area 15.0 cm2 and is rotated with an angular speed of 80.0 rads in a uniform 0.40 T magnetic field. What is the peak voltage induced across the ends of the coil
A rectangular container measuring 32 cm 39 cm 62 cm is filled with water. What is the mass of this volume of water in kilograms and grams
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