A fish tank has dimensions 42 cmcm wide by 1.0 mm long by 0.80
mm high....
A fish tank has dimensions 42 cmcm wide by 1.0 mm long by 0.80
mm high.
a. If the filter should process all the water in the tank once
every 3.0 hh, what should the flow speed be in the
3.0-cmcm-diameter input tube for the filter?
A long metalic strip 1.8 cm wide and 1.0 mm thick is placed in a
1.4-T magnetic field as in the (Figure 1). When a steady current of
17 A passes through it, the Hall emf is measured to be 1.02 μV.
Figure1 of 1 Part A Determine the drift velocity of the electrons.
Express your answer to two significant figures and include the
appropriate units. vd v d = Previous AnswersRequest Answer
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A closed rectangular tank 1.2 m high, 2.4 m long and 1.5 m wide
is two-thirds full of gasoline (specic gravity 0.8). Calculate the
acceleration which may be imparted to the tank so that the bottom
front end of the tank is just exposed. Also calculate the total
forces on each end of the tank and show that the dierence between
these forces equals the unbalanced force necessary to accelerate
the liquid mass in the tank.
A particular conductor is x = 50.0 mm long by y = 10.0 mm wide
by z = 1.0 mm thick.
This conductor is inserted into a 0.50 T magnetic field
aligned parallel to the z-axis. When a 1.00 A current passes
through the strip parallel to the x-axis, the Hall voltage is 100.0
µV.
What is the density of charge carriers in the conductor?
(1) 8.9 x 1024 m-3
(2) 3.1 x 1025 m-3
(3) 5.4 x 1025 m-3...
A concave cosmetic mirror has a focal length of 24 cmcm . A
3.0-cmcm-long mascara brush is held upright 12 cmcm from the
mirror.
Part A
Use ray tracing to determine the location of its image.
Part B
What is the height of the image? Use ray tracing to
determine.
James has ten heavily crosslinked epoxy ‘cubic blocks’ with
dimensions of 1.0 cm by 1.0 cm by 1.0 cm and a density of 1.05
g/cm3 . Tom has twenty blocks made of the same material by double
in length scale of those owned by James. Piter has only one block
made of the same material, but his block is five times the length
scale of those owned by James. (a) What is the number-average mass
of all of the blocks?...
A rectangular car tank 20m long, 4m wide and 3m deep is
completely open at the top. If it is initially filled to the top:
(a) How much liquid will be spilled if it is given a horizontal
acceleration of 0.3g in the direction of its length? (b) What is
the maximum hydrostatic force acting on the side opposite the
direction of the acceleration. (c) Determine the volume of the
remaining water at the tank.
An 800-gallon, 1.2 m wide cylindrical water tank is
filled to the brim. The tank has a hole
formed at 13.3 cm above the ground. It is observed that water leaks
out of the reservoir at a
speed that reduces by 3.2 m.s-1
in 1 minute 39 seconds. If the tank was initially filled to
the
brim
how much water leaked out of the tank, and
8.2 by how much shall the point, at which water lands,
change?
(1 gallon...
200-mm-square, 10-mm-thick tile has the thermophysical
properties of Pyrex ( 0.80) and emerges from a curing
process at an initial temperature of
Ti 140C. The backside of the tile is insulated while
the upper surface is exposed to ambient air and surroundings
at 25C.(a) Estimate the time required for the tile to cool to a
final,
safe-to-touch temperature of Tf 40C. Use an average
tile surface temperature of T
–
(Ti Tf)/2 to
estimate the average free convection coefficient and...
A copper wire has a radius of 1.0 mm. What is the resistance of
2m of the wire at 0 degrees C?
A. 6.3 microOhms
B. 9.9 microOhms
C. 6.3 nanoOhms
D. 9.9 milliOhms
A base for an airport runway, 100 m wide, 2000 m long and 500 mm
thick, is to be constructed out of a clayey sand excavated from a
nearby borrow pit, where the in situ water content is 6%. This soil
is being transported in trucks having a capacity of 8 m 3 , where
each load weighs 13200 kg. In the subbase course, the soil will be
placed at a water content of 14.2% to a dry density of...