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Ede4ka [16]
3 years ago
12

The science of life is

Physics
2 answers:
enyata [817]3 years ago
8 0

The sciences concerned with the study of living organisms, including physiology, biology, botany, zoology, biochemistry, microbiology, and related subjects.

marin [14]3 years ago
3 0
The answer is Biology.
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The mass of an object is 4kg and it has a density of 5gcm^-3. what is the volume ​
Andru [333]

Answer:

density =   mass/ volume

5=4000/ volume

volume=4000/5

volume=800 cm^-3

4 0
3 years ago
Define chemical and physical changes. (
ZanzabumX [31]

Chemical change is two things get chemical reaction and produce a new product.

6 0
3 years ago
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When a low-pressure gas of hydrogen atoms is placed in a tube and a large voltage is applied to the end of the tube, the atoms w
Veronika [31]

Answer:a)   λ = 4.862 10⁻⁷ m,  b)  λ = 4.341 10⁻⁷ m

Explanation:

The spectrum of hydrogen can be described by the expression

         

in the case of the initial state n = 2 this series is the Balmer series

a) Find the wavelength for n = 4

       

let's calculate

          = 1,097 10⁷ ()

         \frac{1}{ \lambda} = 1.097 10⁷ 0.1875 = 0.2056 10⁷

          λ = 4.862 10⁻⁷ m

b) n = 5

           

    \frac{1}{ \lambda} = 1,097 10⁷ ()

    \frac{1}{ \lambda} = 1.097 10⁷ 0.21 = 0.23037 10⁷

     λ = 4.341 10⁻⁷ m

8 0
3 years ago
A garden hose with an internal diameter of 2.9 cm is connected to a (stationary) lawn sprinkler that consists merely of a contai
Alecsey [184]

Answer:

Water leaves the holes with a speed of 2.65 m/sec    

Explanation:

It is given internal diameter of garden hose = 2.9 cm

So internal radius r_1=\frac{2.9}{2}=1.45cm

Number of holes n = 24

Diameter of holes d = 0.36 cm

So radius of holes r_2=\frac{0.36}{2}=0.18cm

Velocity of water in hose  v_1=0.98m/sec

According to continuity equation

A_1v_1=nA_2v_2

\pi r_1^2\times 0.98=24\times \pi r_2^2\times \times v_2

1.45^2\times 0.98=24\times  0.18^2\times \times v_2

v_2=2.65m/sec

Therefore water leaves the holes with a speed of 2.65 m/sec

3 0
4 years ago
1. While riding a chairlift, a 55-kg skier is raised a vertical distance of 370 m. What is the total change in the skier's gravi
stiv31 [10]

Answer:

<em>199,430Joules</em>

Explanation:

Gravitational potential energy is the energy possessed by a falling object due to virtue of its position.

gravitational potential energy = mass * acceleration due to gravity * height

gravitational potential energy = 55 * 9.8 * 370

gravitational potential energy = 539 * 370

gravitational potential energy = 199,430

<em>Hence the total change in the skier's gravitational potential energy is 199,430Joules</em>

5 0
3 years ago
Read 2 more answers
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