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a) A certain raft is 2.5 m long, 0.55 m wide, and 14 cm deep. If the raft itself has a mass of 15.6 kg, what is the maximum mass it can support in fresh water?
b) If this raft is only partially submerged, how much additional mass will cause the raft to sink 3.0 cm deeper into the water?
Estimate the boiling point of a 0.6 molal solution of NaCl in water, What is the osmotic pressure of a 100 mL of toluene solution that contains a total of .005 moles of a polymer dissolved in it at 25°C
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below, She drops a stone from rest in an attempt to hit the raft, Find the speed of the raft
What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.
Huygens' principle (first described by the Dutch scientist Christiaan Huygens in 1678) uses geometry to determine the shape of a wavefront at a time.
Calculate the orbital period of Neptune (in yr) from knowledge of G, the mass of the sun (M = 1.99×1030 kg), and the orbital radius of Neptune of 3.00×101A.U
compute the distance x the spring was compressed.
A loudspeaker of mass 20 is suspended a distance of 2 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of 2.90.
An Earth satellite moves in a circular orbit 644 km above Earth's surface with a period of 97.40 min, What are the magnitude of the centripetal acceleration of the satellite
What is the target's speed just after the bullet emerges.What is the velocity v of the smaller fish before lunch.
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 What is the magnitude of the net force acting on the soccer ball at this instant
An oil rig in the gulf is held at its designated drilling location by 3 tugboats. tugboat A oulls with 42000 N straight in the east direction. Tugboat B pulls at an angle of 50 degrees north of west. tugboat C pulls 25 degress west of south. draw ..
Determine the total energy radiated by the Sun each day. The Stephan-Boltzmann constant is 5.6696 × 10-8 W/m2/K4, e = 1, and the radius of Sun is 6.96 × 108 m.
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