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3 years ago

What is the force of a 3kg skateboard accelerating at a rate of 4m/s?

Chemistry

1 answer:

Sholpan [36]3 years ago

7 0

To times 4 and 3 together for mass and acceleration then your answer would be 12, So Force= 12

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Which element has chemical properties most similar to carbon (C)?

julia-pushkina [17]

Silicon
Silicon has the chemical properties that are most similar to those of carbon.

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3 years ago

Read 2 more answers

A concrete pile from a waterfront pier was pulled from the harbor water at port hueneme california. It's dimensions we're 14in x

Anna [14]

The surface area expressed in square feet of a single face of a pile is 1.45 square feet.

<u>Explanation:</u>

The dimensions of the pillar are given as 14 in $\times$ 14 in

(1 feet = 12 inch)

According to the pillar dimensions mentioned in the problem, the length of the pillar should be 15 inches, height by 14 inches and the width by 14 inches.

There will be two surface areas of the concrete pile, one implies side surface area and the other is end surface area.

For calculating the side surface area,

Area of the side surface = 14 in $\times$ 15 in

= $14 in.$ $\times$ $\frac{1 ft.}{12 in.}$

= 1.16 $\times$ 1.25

= 1.45 square feet.

(In the given question, only a single face is asked so there is no need to find the surface area of the end face.)

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4 years ago

The number of protons + number of neutrons is<br> equal to the

max2010maxim [7]

Answer: mass

Explanation: the protons and neutrons make up the nucleus and nearly the entire mass of the atom

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3 years ago

What volume of 0.436 M barium nitrate solution is needed to prepare 240.0 mL of a barium nitrate solution that is 0.300 M in nit

Advocard [28]

The correct answer would be A

Explanation: I did the math

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3 years ago

The cylinder of aluminum in class was approximately 13mm in circumference and 42mm in length. What would be it's approximate mas

Roman55 [17]

Answer:

Mass, m = 1.51 grams

Explanation:

It is given that,

The circumference of Aluminium cylinder, C = 13 mm = 1.3 cm

Length of the cylinder, h = 4.2 cm

We know that the density of the Aluminium is 2.7 g/cm³

Circumference, C = 2πr

$r=\dfrac{C}{2\pi}\\\\r=\dfrac{1.3}{2\pi}\\\\r=0.206\ cm$

Density is equal to mass per unit volume.

$d=\dfrac{m}{V}$

m is mass of the cylinder

V is the volume of the cylinder

$V=\pi r^2h\\\\V=\dfrac{22}{7}\times0.206^2\times 4.2\\\\V=0.5601\ cm^3$

So,

$m=d\times V\\\\m=2.7\times 0.5601\\\\m=1.51\ g$

So, the mass of the cylinder is 1.51 grams.

5 0

4 years ago