Question

A standard 1.00 kilogram weight is a cylinder 44.6 mm in height
and with a radius of 22.1 mm. What is the density of the material
in kg/m^{3} ?

Round your answer to 0 decimal places.

Answer #1

1. A standard 1 kilogram weight is a cylinder 54.0 mm in height
and 41.0 mm in diameter. What is the density of the material?
______kg/m3
2. Two spheres are cut from a certain uniform rock.
One has radius 4.70 cm. The mass of the other is eight times
greater. Find its radius.
______ cm
3. A solid piece of lead has a mass of 29.22 g and a volume of
2.59 cm3. From these data, calculate the density of...

The volume of a cylinder of height 9 inches and radius
rr inches is given by the formula V=9πr2V=9πr2.
Suppose that the radius is expanding at a rate of 0.4
inches per second. How fast is the volume changing when the radius
is 2.9 inches? Use at least 5 decimal places in your
answer.

The average weight of a line of collectible action figures is
3.2 kilograms with a standard deviation of 0.3 kilogram. Round your
answers to the second decimal place.
80% of the toys are heavier than _____ kg
80% of the toys are lighter than ______ kg

In the figure, a small disk of radius r=1.00 cm has been glued
to the edge of a larger disk of radius R=6.00 cm so that the disks
lie in the same plane. The disks can be rotated around a
perpendicular axis through point O at the center of the larger
disk. The disks both have a uniform density (mass per unit volume)
of 1.40 × 103 kg/m3 and a uniform thickness of 7.00 mm. What is the
rotational inertia...

A light, nonstretching cable is wrapped around a solid cylinder
with mass 88 kg and radius 0.19 m. The cylinder rotates with
negligible friction about a stationary horizontal axis. We attach
the free end of the cable to a block of mass 48 kg, and release the
block from rest at a distance 3.9 m above the floor. As the block
falls, the cable unwinds without stretching or slipping. Find the
angular speed of the cylinder (in radians/s) the moment...

The density of gasoline is 7.30 ? 102
kg/m3 at 0°C. Its average coefficient of volume
expansion is 9.60 ? 10?4 (°C)?1, and note
that
1.00 gal = 0.00380 m3.
(a) Calculate the mass of 11.3 gal of gas at 0°C. (Give your
answer to at least two decimal places.)
kg
(b) If 1.000 m3 of gasoline at 0°C is warmed by 19.5°C,
calculate its new volume. (Give your answer to at least two decimal
places.)
m3
(c) Using the...

You have a glass ball with a radius of 2.00 mm and a density of
2500 kg/m3. You hold the ball so it is fully submerged, just below
the surface, in a tall cylinder full of glycerin, and then release
the ball from rest. Take the viscosity of glycerin to be 1.5 Pa s
and the density of glycerin to be 1250 kg/m3. Use g = 10 N/kg = 10
m/s2. Also, note that the drag force on a ball...

A graduated cylinder filled with water rests upside down in a
container of water at 0 C. The water is 7.00 cm deep. Attached to
the base of the cylinder is a small ring (but since the cylinder is
upside down, the ring is at the highest elevation, available for
grabbing). The base of the cylinder has mass 10.0 grams with ring
included. The cylinder itself has radius 3.00 cm, height 40.0 cm,
and mass 100.0 grams (including the base...

The authors of the paper "Weight-Bearing Activity during Youth
Is a More Important Factor for Peak Bone Mass than Calcium Intake"
studied a number of variables they thought might be related to bone
mineral density (BMD). The accompanying data on
x = weight
at age 13 and
y = bone
mineral density at age 27 are consistent with summary quantities
for women given in the paper.
Weight (kg)
BMD (g/cm2)
54.4
1.15
59.3
1.26
74.6
1.42
62.0
1.06
73.7
1.44...

Calculate the density of a neutron star with a radius 1.7 x 104
m, assuming the mass is distributed uniformly. Treat the neutron
star as a giant nucleus and consider the mass of a nucleon 1.675 x
10-27 kg. Your answer should be in the form of N x 1017 kg/m3.
Enter only the number N with two decimal places, do not enter
unit.

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