Physics, 11.07.2019 00:30 autumn8668
Assuming that the density of air constant at 1.2 kg/m3, what is the pressure in athens (elevation 202 m) if the thickness of the atmosphere from outer spaceto sea level is 8600 m?
Answers: 3
Physics, 22.06.2019 11:30
In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque
Answers: 1
Physics, 22.06.2019 11:30
(2) (a) you have a simple circuit that consists of only a battery (Ξ΄vbat=1.5v) and two resistors with resistance r1=10Ο and r2=5Ο, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7Ο on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?
Answers: 3
Physics, 22.06.2019 15:50
An object with initial temperature 130 β f is submerged in large tank of water whose temperature is 50 β f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = β 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )
Answers: 1
Physics, 23.06.2019 02:40
If a rock is thrown upward on the planet mars with a velocity of 10 mys, its height in meters t seconds later is given by y β 10t 2 1.86t 2 . (a) find the average velocity over the given time intervals: (i) [1, 2] (ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001] (b) estimate the instantaneous velocity when t β 1.
Answers: 2
Assuming that the density of air constant at 1.2 kg/m3, what is the pressure in athens (elevation 20...
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