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A rock is dropped into a deep hole and 2.5 s later the sound of striking the bottom is heard. If the speed of sound is 340 m/s, what is the depth of the hole?
Two rods AB and BC have charges +2Q and -2Q uniformly distributed on them. They are bent in the shape of arcs of a circle and joined at B. Find the linear charge density on rod AB
A golf ball strikes a hard, smooth floor at an angle of ? = 32.4° and, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
A hollow cylindrical copper pipe is 1.40m long and has an outside diameter of 3.90cm and an inside diameter of 2.60cm . How much does it weigh
Vector A points in the negative y direction and has a magnitude of 3 units. Vector B has three times the magnitude and points in the positive x direction. Find out the direction and magnitude of the following vectors.
the henrys law constant kh for carbon monoxide co in water at 25oc is 9.71x10-4 moll.atm . how many grams of co will
the half life of carbon 14 is 5.730 years. If an archeologist finds an patially burned firewood and the carbon 14 content is only 12.5%. What is the age of the wood
A child of mass 30 kg stands at the edge of a merry-go-round of mass 130 kg and radius 2.3 m, and both are initially at rest. How far does the child walk as measured relative to the merry-go-round
What vertical height does block reach above its starting point. What speed does it have when it slides back down to its starting point.
A 0.365-kg blue bead slides on a frictionless, curved wire, starting from rest at point circle a, Find the maximum height the green bead rises as it moves up the wire
Consider two massless springs connected in series. Spring 1 has aspring constant k_1, and spring 2 has a springconstant k_2. A constant force ofmagnitude F is being applied to theright. When the two springs are connected in this way, they form asy..
A 1.09-cm-diameter microscope objective has a focal length of 2.4 mm. It is used in visible light with a wavelength of 516 nm. What is the objective's resolving power if used in air
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