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2 years ago

What is the density of a piece of wood with a mass of 25 kg and a volume of 0.0385 m³?

Physics

1 answer:

Orlov [11]2 years ago

7 0

Answer:

649kg/m^3

Explanation:

Let p be the density of this particular object.

Formula for density:

$p = \frac{mass \: (in \: kg)}{volume \: (in \: {m}^{3}) }$

We can substitute the givenmass and volume to find density of the object.

$p = \frac{25kg}{0.0385 {m}^{3} } \\ = 649kg \: per \: {m}^{3}$

Therefore the density of this object is 649kg/m^3.

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How do the principles of convection, conduction, and radiation explain how the water in the saucepan gets hot?

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4 years ago

Which of the following elements would most likely become a positive ion when forming a chemical bond?

rusak2 [61]

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3 years ago

A squirrel pulls a 8.7 kg bag of acorns along the ground with a constant force of 80 N. If the force of friction opposing this s

Annette [7]

Answer:

$a=5.51\ m/s^2$

Explanation:

Given that,

The mass of a bag of acorns, m = 8.5 kg

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The force of friction = 32 N

We need to find the acceleration of the bag of acorns.

Net force acting on it is = 80 N - 32 N

= 48 N

Let a be the acceleration of the bag of acorns. So,

F = ma

$a=\dfrac{F}{m}\\\\a=\dfrac{48}{8.7}\\\\a=5.51\ m/s^2$

So, the acceleration of the bag of acorns is $5.51\ m/s^2$ .

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3 years ago

Calculate the energy of the green light emitted, per photon, by a mercury lamp with a frequency of 5.49 × 1014 hz. calculate the

olga nikolaevna [1]

The energy of a single photon is given by:
$E=hf$
where
E is the energy
h is the Planck constant
f is the frequency of the light

The light in our problem has a frequency $f=5.49 \cdot 10^{14}Hz$ , so the energy of each photon of that light is:
$E=hf=(6.6 \cdot 10^{-34} Js)(5.49 \cdot 10^{14} Hz)=3.64 \cdot 10^{-19} J$

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3 years ago

What phase are daughter cells in as a result of mitosis

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They are in interphase

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4 years ago