What is the density of a block of unknown material
What is the density of a block of unknown material with a mass of 14.72 g if the dimensions are:
length = 2.2 cmheight = 1.7 cmwidth = 3.7 cm
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An electric field of 7.80 105 V/m is desired between two parallel plates, each of area 37.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate?
What was the impact of European expansion on the indigenous people of the American, European society, and the new American civilization?
An 87.7-g arrow is fired from a bow whose string exerts an average force of 115 N on the arrow over a distance of 75.0 cm. What is the speed of the arrow as it leaves the bow?
The acceleration of gravity is 9.8 m/s2 .Determine the magnitude of the change in the block's kinetic energy.Determine the change in the block's potential energy.Assumed: The frictional force is constant. Determine the magnitude of the frictional
Friction and air resistance are negligible. What speed does the ball have when the cable makes an angle of 30 degrees with respect to the vertical?
A 0.8 kg stone attached to a string is whirled in a horizontal circle of radius .18 as in the figure below. The string makes an angle of 25° with the vertical. Find the tension in the string.
A 3.6 kg object hangs at one end of a rope that is attached to a support on a railroad boxcar. When the car accelerates to the right, the rope makes an angle of 45 with the vertical The acceleration of gravity is 9.8 m/s2 . Find the acceleration?
A diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 520 N stands at the free end. The diving board is of uniform cross section and weighs 250 N. Find the magnitude of the force at the support point. F
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A wildlife conservation organization introduced a program to protect an endangered bird species by restricting human activity in certain areas
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