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3 years ago

Why is the scientific method described as cyclic?

Physics

1 answer:

Troyanec [42]3 years ago

8 0

Because the scientific method can go around in a circle as many times as neccisary to get the results you need

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A force acts on an object. Which option describes an action that could prevent the object from moving

Naya [18.7K]

Answer:

Friction or tension

Explanation:

Friction stops an object from moving in the presence of force

7 0

3 years ago

What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 5.90 x 10^5 K?

OLEGan [10]

<u>Answer:</u> The average kinetic energy of helium atoms is $1.222\times 10^{-17}J$

<u>Explanation:</u>

To calculate the average kinetic energy of the atom, we use the equation:

$K=\frac{3}{2}kT$

where,

K = average kinetic energy = ?

k = Boltzmann constant = $1.3807\times 10^{-23}J/K$

T = temperature = $5.9\times 10^5K$

Putting values in above equation, we get:

$K=\frac{3}{2}\times 1.3807\times 10^{-23}J/K\times 5.9\times 10^5K\\\\K=1.222\times 10^{-17}J$

Hence, the average kinetic energy of helium atoms is $1.222\times 10^{-17}J$

4 0

3 years ago

Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq

gayaneshka [121]

Answer:

The volume is decreasing at 160 cm³/min

Explanation:

Given;

Boyle's law, PV = C

where;

P is pressure of the gas

V is volume of the gas

C is constant

Differentiate this equation using product rule:

$V\frac{dp}{dt} +P\frac{dv}{dt} = \frac{d(C)}{dt}$

Given;

$\frac{dP}{dt}$ (increasing pressure rate of the gas) = 40 kPa/min

V (volume of the gas) = 600 cm³

P (pressure of the gas) = 150 kPa

Substitute in these values in the differential equation above and calculate the rate at which the volume is decreasing ( $\frac{dv}{dt}$ );

(600 x 40) + (150 x $\frac{dv}{dt}$ ) = 0

$\frac{dv}{dt} = -\frac{(600*40)}{150} = -160 \ cm^3/min$

Therefore, the volume is decreasing at 160 cm³/min

3 0

3 years ago

2. Isabel throws a tomato at Juan straight down off the balcony of an apartment building at a speed

NISA [10]

Answer:

Speed- 48m/s..........................................

4 0

3 years ago

Explanation of principles of flotation

ss7ja [257]

When any boat displaces a weight of water equal to its own weight, it floats. This is called the "principle of flotation": A floating object displaces a weight of fluid equal to its own weight.

8 0

3 years ago

Read 2 more answers