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To water the yard, you use a hose with a diameter of 3.2 cm. Water flows from the hose with a speed of 1.5 m/s. If you partially block the end of the hose so the effective diameter is now 0.67 cm, with what speed does water spray from the hose? v=?
Briefly describe the solar evolution time-line of a common star like our own from formation through collapse. Main Sequence stars can be classified according to which characteristics? What are the characteristics of our Sun?
A body of mass 2.9 kg makes an elastic collision with another body at rest and continues to move in the original direction but with one-fourth of its original speed. What is the mass of the other body
A horizontal wire is hung from the ceiling of a room by two massless strings. The wire has a length of 0.22 m and a mass of 0.009 kg. A uniform magnetic field of magnitude 0.070 T is directed from the ceiling to the floor.
Molecule of DNA (deoxyribonucleic acid) is 2.23 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 1.19% upon becoming charged, and remains in th..
A 4.80 kilogram ball is dropped from a height of 10 meter above one end of a uniform bar that pivots at its center. Determine how high will the other ball go after the collision
1. an electric motor performs 2000 j of work while lifting a 50 kg mass. how far does it lift the mass?it it takes
A train 400m long is moving on a straight track with a speedof 82.4 km/h. determine how long the train blocked the crossing
On the TV show Top Gear's Africa special this season, the three hosts decided to build a raft out of wood, How think did the raft need to be
the outer surface the membrane of a spherical cell has a potential which is 60 millivolts higher than the inner
a speeding motorist passes a stopped police car. at the moment the car passes the police car starts from rest with a
Each team of up to 3 students will design and analyze a modular linear-rail hoist structure that spans 8 meters between existing supports and can lift 2.5kN
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 2.37 m/s2 for 15.9 s. What is the distance between the stations
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