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4 years ago

A(n) a0 is software that contains rows and columns used to make calculations, organize information, and make comparisons.

1 answer:

7 0

The appropriate response is spreadsheets. It is a sheet of paper that shows bookkeeping or other information in columns and rows; a spreadsheet is likewise a computer application program that reenacts a physical spreadsheet by catching, showing, and controlling information masterminded in lines and sections.

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The blade of a lawn mower is rotating at an angular speed of 128 rad/s. The tangential speed of the outer edge of the blade is 3

stiv31 [10]

Answer:

0.25m

Explanation:

Using the expression that relates the angular velocity(w) and the linear velocity (v).

v= wr where;

w is the angular speed= 128rad/s

v is the linear speed = 32m/s

r is the radius

r = v/w

r = 32/128

r = 0.25m

The radius of the blade is 0.25m

4 0

3 years ago

A rock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground. What was the potential energy of the r

lidiya [134]

Ep = 4900 because Ep = wh

4 0

4 years ago

Read 2 more answers

11) Which statement about covalent bonds is true? A) Covalent bonds are generally weaker than ionic bonds because they form full

Cerrena [4.2K]

<h3><u>Answer;</u></h3>

C) Covalent bonds are generally weaker than ionic bonds because they overlap electrons to fill their outer shell.

<h3><u>Explanation;</u></h3>

<em><u>Covalent bond is a type of bond that results from the sharing of electrons between two non-metal atoms. </u></em>
<em><u>Ionic bond on the other is a type of bond that results from the transfer of electrons between metal atoms and non metal atoms, where a metal atom looses electrons and a non-metal atom gains electrons.</u></em>
<em><u>The amount of energy required to break an given bond determines how strong a particular bond is.</u></em> Ionic bonds require more energy to break as compared to covalent bond and therefore they are stronger than the covalent bonds.

5 0

3 years ago

Read 2 more answers

An atom's valence electron shell Multiple Choice1. is filled when it has three electrons. 2. determines its chemical reactivity.

yKpoI14uk [10]

Answer: An atom valence electron shell determines its chemical reactivity.

Explanation:

An atom's valence electron shell determines its chemical reactivity. The amount of electrons in the outermost shell of an atom is its valence electron and it determines how reactive the atom is.

The reactivity of an atom depends on the number of electrons in its outermost shell. Atoms that has their outermost electrons full e.g noble gases like argon, krypton etc are unreactive because there is no room for the atom to donate or accept any electron.

Elements like sodium and chlorine are reactive because they possesses 1 and 7 electrons in their outermost shell respectively as such they can donate and accept electrons making them reactive elements.

4 0

3 years ago

The moment arm of the biceps is approximately 2 cm from the axis of rotation of the elbow and the force vector representing the

Rom4ik [11]

Answer:

F = 150.6 N

Rx = 63.65 N

Ry = - 115.5 N

orientation is - 61.14 degree with horizontal

Explanation:

given data

moment arm m = 2 cm

angel = 115 degree

distance = 13 cm

force = 21 N

to find out

muscle force, vertical component force , horizontal component force , orientation

solution

we consider here Ra and Rb is reaction upside and

we know moment formula that is

moment at joint = F × sin(θ) × m - force × distance

0 = F × sin(115) × 2 - 21 × 13

F = 150.6 N

for horizontal component

sum of horizontal force = Rx + Fcosθ

0 = Rx + (150.6) cos115

Rx = 63.65 N

and

for vertical component

sum of vertical force = Ry + Fsinθ

0 = Ry + (150.6) sin(115)

Ry = - 115.5 N

and

reaction direction are

tan∅ = Ry / Rx

tan∅ = -115.5 / 63.65

∅ = - 61.14 degree

so orientation is - 61.14 degree with horizontal

6 0

3 years ago