7. Calculate the density p (in kg/m?) for each of the following:
Physics, 04.03.2021 15:30 arslonm777
Independent practice
C.
7. Calculate the density p (in kg/m?) for each of the following:
a. m = 10 kg and V = 10 m3
b. m = 160 kg and V = 0.1 m3
m = 220 kg and V = 0.02 m3
2. A wooden post has a volume of 0.025 m’ and a mass of 20 kg. Calculate its
density in kg/m².
3. Challenge: A rectangular concrete slab is 0.80 m long, 0.60 m wide and 0.04
m thick
a. Calculate its volume in m.
b. The mass of the concrete slab is 180 kg. Calculate its density in kg/m3
Answers: 3
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How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.
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An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
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Independent practice
C.
7. Calculate the density p (in kg/m?) for each of the following:
7. Calculate the density p (in kg/m?) for each of the following:
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