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zimovet [89]
3 years ago
6

Unlike eukaryotes, prokaryotes do not have:

Physics
2 answers:
Mashcka [7]3 years ago
7 0

D is the answer

Unlike eukaryotes, prokaryotes have no membrane-bound organelles. This means that they lack a nucleus, mitochondria, and other advanced cell structures

xxMikexx [17]3 years ago
5 0
D. a membrane bound nucleus , lmk if im right
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What is the name for potential difference that causes current to flow?
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Answer:

the answer is C i didnt mean to put b lol

Explanation:

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Amanda [17]

Answer:

When a particle or a system of particles move in a system where no external force acts, then the total linear momentum of the particle system remains constant.

Explanation:

Given data:

Total mass of the skateboarder, m_{1} = 70 \ kg

Mass of the friend, m_{2} = 50 \ kg

Initial velocity of the skateboarder, u_{1} = 3 \ m/s

Initial velocity of the the friend, u_{2} = 0

Let the new velocity of the skateboarder when his friend jumps be v.

From the conservation law of linear momentum,

m_{1}u_{1} + m_{2}u_{2} = (m_{1} + m_{2})v

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\Rightarrow \ v &= 1.75 \ m/s.

4 0
4 years ago
50 Points please Help
Leya [2.2K]

Answer:

Temperature -SI unit :Kelvin

Explanation:

Kelvin is the SI unit of Temperature .

  • Don't get confused and write Celsius as the SI unit .Celsius is not the SI unit .

\\ \sf\longmapsto 1K=273°C

Or

\\ \sf\longmapsto 1°C=273.16K

Lets take an example :-

  • Take 27°C

Lets convert to Kelvin scale

\\ \sf\longmapsto 27°C

\\ \sf\longmapsto 27+273

\\ \sf\longmapsto 300K

  • SI unit of Mass=kilogram(Kg)
  • SI unit of Time=second(s)
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4 0
3 years ago
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John(body mass=160pounds) is taking off for a long jump. The average ground reaction force Fg at takeoff is 1400 N pointing forw
slega [8]

Answer:

The free body diagram of John is shown in the attached figure (in the FBD john's mass is supposed to be concentrated at his center of mass and FBD is made of center of mass)

b) As shown in the FBD the ground reaction forces are:

i) In X direction F_{x}=1400cos(35^{o})=1146.81N

ii) In Y direction F_{y}=1400sin(35^{o})=803.0N

c) The respective accelerations in x and y direction's is calculated by newton's second law as indicated under

\sum F_{x}=ma_{x}\\\\\therefore a_{x}=\frac{\sum F_{x}}{m}=\frac{1146.8N}{72.57kg}=15.80m/s^{2}\\\\\sum F_{y}=ma_{y}\\\\\therefore a_{y}=\frac{\sum F_{y}}{m}=\frac{803.00-72.57\times 9.81}{72.57}=1.255m/s^{2}

4 0
3 years ago
Two identical closely spaced circular disks form a parallel-plate capacitor. Transferring 2.1×109 electrons from one disk to the
Bad White [126]

Answer:

d = 0.018 m

Explanation:

Charge on the plates of the capacitor due to transfer of electrons is given as

Q = Ne

here we know that

N = 2.1 \times 10^9

so we have

Q = (2.1 \times 10^9)(1.6 \times 10^{-19})

Q = 3.36 \times 10^{-10} C

now we have electric field between the plates is given as

E = \frac{Q}{A\epsilon_0}

here we have

1.5 \times 10^5 = \frac{3.36 \times 10^{-10}}{A(8.85 \times 10^{-12})}

A = 2.53 \times 10^{-4} m^2

now we have

A = \frac{\pi d^2}{4}

2.53 \times 10^{-4} = \frac{\pi d^2}{4}

d = 0.018 m

3 0
3 years ago
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