An ideal fluid, of density 900 kg/m3, flows at 4.80 m/s through a level pipe with radius of 0.22 cm. The pressure in the fluid is 1.3 × 10^5 N/m2 . This pipe connects to a second level pipe, with radius of 0.72 cm. Find the speed of flow in the second pipe
a. 51 m/s
b. 1.5 m/s
c. 0.45 m/s
d. 16 m/s
e. 4.9 m/s
c
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Blue light differs from red light in that
a. blue light has a higher energy than red light. b. blue light has a lower energy than red light. c. blue light has a shorter wavelength than red light. d. blue light has a longer wavelength than red light. e. More than one of the other choices are correct.
Constant Acceleration Kinematics: At the instant a traffic light turns green, a car that has been waiting at the intersection starts ahead with a constant acceleration of 2.00 m/s2. At that moment a truck traveling with a constant velocity of 15.0 m/s overtakes and passes the car.(a) Calculate the time necessary for the car to reach the truck.(b) Calculate the distance beyond the traffic light that the car will pass the truck.(c) Determine the speed of the car when it passes the truck.
What will be an ideal response?
A radioisotope has a half-life of ? at a temperature of 150 K. If its temperature is increased to 300 K, what will its half-life be?
A) 4? B) 2 ? C) ? D) ?/2 E) ?/4
Solutions are
a. homogeneous mixtures. b. heterogeneous mixtures. c. nonuniform mixtures. d. none of these.