8.
A pump at the bottom of a 0.60 meter deep fishpond sprays water
from the surface at 2.4 liters/minute. If the intake pipe at the
bottom of the pond and output pipe at the waters surface each have
a 1.2cm diameter
a) what is the total pressure at the bottom of the pond where
the intake is located?
b) what is the magnitude of air pressure acting on the spray
at its highest point
c) what is the velocity...
A 4.9-m-wide swimming pool is filled to the top. The bottom of
the pool becomes completely shaded in the afternoon when the sun is
22 ∘ above the horizon.
A lamp is installed at the bottom of a pool filled with water.
The pool has depth d. The lamp produces light rays in all
directions, but light only escapes from the top surface of the
water within a circular region which has diameter D.
(a) Explain why this effect occurs?
(b) If the depth of the pool is 50 cm. Find the diameter D.
A rectangular tank 1.5 m wide, 3 m long and 1.8 m deep contains
water to a depth of 1.2 m. Find the horizontal acceleration that
may be imparted to the tank in the direction of its length so
that
1. the water is just about to spill
2. the front bottom corner of the tank is just exposed.
3. the bottom of the tank is exposed to its midpoint.
For (2) and (3) above, compute the volume of the...
A meter stick on a horizontal frictionless table top is pivoted
at the 80-cm mark. A force F1 = 5 N is applied perpendicularly to
the end of the stick at 0 cm, as shown. A second force F2 (not
shown) is applied at the 100-cm end of the stick. The stick does
not rotate.
a) What is the torque (magnitude and sign) about the pivot from
F1?
b) Explain why the torque from the pivot about itself is
zero....
The figure shows a meter stick lying on the bottom of a
100-cm-long tank with its zero mark against the left edge. You look
into the tank at a 30 angle, with your line of sight just grazing
the upper left edge of the tank.
a. What mark do you see on the meter stick if the tank is
empty?
b. What mark do you see on the meter stick if the tank is half
full of water?
c. What...
An average pool is 45 m long and 43 m wide. How many mL of water
is required to fill the pool to an average depth of 3.10 ft? Put
answer in scientific notation.
A meter stick (?= 1.00 m, ?= 100 g) is made into a physical
pendulum by drilling a small hole at a distance ?from the center of
mass to become the pivot point. Find the distance ?, if the
pendulum is to have a period of ?= 3.00 s.
A.3.79 cm
B.14.6 cm
C.20.4 cm
D.40.9 cm
E.It cannot be done.
A swimming pool is 20ft wide and 40 feet long and its bottom is
an inclined plane, the shallow end having a depth of 3 ft and the
deep end 12 ft.
If the pool is full of water, find the hydrostatic force on (a)
the shallow end side, (b) the deep end side, (c) the side of the
pool, and (d) the bottom of the pool.
A
0.13 kg meter stick is held perpendicular to a vertical wall by a
2.6 m string going from the wall to the far end of the stick.
A. Find the tension of the string
B. Find the tension in a 2.0 string.