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A solid block is attached to a spring scale. The reading on the scale when the block is completely immersed in water is 25.2 , and the reading when it is completely immersed in alcohol of density 806 is 25.9
a) What is the block's volume?
b) What is the block's density?
A straight horizontal garden hose 22.0 m long with an interior diameter of 1.10 cm is used to deliver 20oC water at the rate of 0.470 liters/s.
A diverging lens with f= -26.0 cm is placed 11.0 cm behind a converging lens with f= 20.0 cm. Where will an object at infinity be focused
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
The potential difference between the surface of a 2.5cm -diameter power line and a point 1.6m distant is 4.1kV. What is the line charge density on the power line
Two spheres are launched horizontally from a 1.2 -high table. Sphere is launched with an initial speed of 4.5. find the distance that sphere travels from the edge of the table
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 880 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
An arrow, starting from rest, leaves the bow with a speed of 26.6 m/s. If the average force exerted on the arrow by the bow were tripled, with what speed would the arrow leave the bow
Two point charges totaling 7.00 µC exert a repulsive force of 0.100 N on one another when separated by 0.719 m. What is the charge on each? smallest charge largest charge (b) What is the charge on each if the force is attractive? smallest charge l..
Light in a transparent material (index of refraction 1.333) strikes the boundary with another transparent material (n = 1.010). compute the critical angle for total internal reflection
q1. three objects with masses m1 54.6 kg m2 38.8 kg and m3 20.0 kg are hanging from ropes that run over pulleys.
Ignoring the mass of the spring, what is the mass of the fish?
A heat engine takes in 1000 J of energy at 1000 K and exhausts 615 J at 200 K. What are the actual and maximum theoretical efficiencies of this heat engine
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