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2 years ago

12

What characteristics help you tell the difference between a rhombus and a rectangle?

2 answers:

pishuonlain [190]2 years ago

7 0

A rhombus has four equal sides and does not have four 90 degree angles / sides that are perpendicular to each other. However, a rectangle does have four 90 degree angles with sides that are perpendicular.Another characteristic; a rhombus has four equal sides, while a rectangle has two pairs of congruent sides.

:)

Lemur [1.5K]2 years ago

4 0

A rectangle has parellel lines, like a rhombus, but a rectangle has 4 90 degree angles, while a rhombus doesn't

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2 years ago

A hoop, a uniform solid cylinder, a spherical shell, and a uniform solid sphere are released from rest at the top of an incline.

Serjik [45]

Answer:

Step-by-step explanation:

Given

Hoop, Uniform Solid Cylinder, Spherical shell and a uniform Solid sphere released from Rest from same height

Suppose they have same mass and radius

time Period is given by

$t=\sqrt{\frac{2h}{a}}$ ,where h=height of release

a=acceleration

$a=\frac{g\sin \theta }{1+\frac{I}{mr^2}}$

Where I=moment of inertia

a for hoop

$a=\frac{g\sin \theta }{1+\frac{mr^2}{mr^2}}$

$a=\frac{g\sin \theta }{2}$

a for Uniform solid cylinder

$a=\frac{g\sin \theta }{1+\frac{mr^2}{2mr^2}}$

$a=\frac{2g\sin \theta }{3}$

a for spherical shell

$a=\frac{g\sin \theta }{1+\frac{2mr^2}{3mr^2}}$

$a=\frac{3g\sin \theta }{5}$

a for Uniform Solid

$a=\frac{g\sin \theta }{1+\frac{2mr^2}{5mr^2}}$

$a=\frac{5g\sin \theta }{7}$

time taken will be inversely proportional to the square root of acceleration

$t_1=k\sqrt{2}=1.414k$

$t_2=k\sqrt{\frac{3}{2}}=1.224k$

$t_3=k\sqrt{\frac{5}{3}}=1.2909k$

$t_4=k\sqrt{\frac{7}{5}}=1.183k$

thus first one to reach is Solid Sphere

second is Uniform solid cylinder

third is Spherical Shell

Fourth is hoop

3 0

3 years ago

What is 18.890 rounded to the nearest hundred

bagirrra123 [75]

18.90? I believe would be the answer . Let's see if someone else responds

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2 years ago