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ExtremeBDS [4]
3 years ago
12

Which step of mitosis involves the chromosomes lining up in the center of the cell?

Physics
2 answers:
gizmo_the_mogwai [7]3 years ago
5 0

Answer:

Metaphase

Explanation:

During metaphase,chromosome line up in the middle of the cell.

gladu [14]3 years ago
5 0
Chromosomes line up at the metaphase.
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The c-cl bond dissociation energy in cf3cl is 339 kj/mol. What is the maximum wavelength of photons that can rupture this bond?
ruslelena [56]

Answer:

3.53*10^{-7} m

Explanation:

Photon that can rupture the bonds are those with the energy of the bond dissociation energy. If we want to know the energy for each molecule we have to take into account that:

1mol=6.022*10^{23}molecule

Hence, we have

E_d=339\frac{10^{3}J}{mol}*\frac{1mol}{6-022*10^{23}molecules}=5.62*10^{-19}J/molecule

but the energy is also:

E_d=h\nu =\frac{hc}{\lambda}\\\\\lambda=\frac{hc}{E_d}

where h is the Planck's constant and c is the speed of ligth. By replacing we obtain:

\lambda=\frac{(6.62*10^{-34}Js)(3*10^{8}m/s)}{5.62*10^{-19}J}=3.53*10^{-7}m

hope this helps!

7 0
2 years ago
Read 2 more answers
Heat is added to an element causing the atoms to bounce back and forth in the molecule. This is an example of which type of moti
lisabon 2012 [21]

Answer:

Vibrational motion

Explanation:

8 0
2 years ago
Read 2 more answers
The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. Which type of wave is fou
Bond [772]
<span>Wavelength = (speed) / (frequency)
Speed of EM radiation = 3 x 10⁸ m/s

Frequency (3 × 10¹⁹ Hz)  ===>  wavelength  =  0.01 nanometer

Frequency (3 × 10¹⁶ Hz)  ===>  wavelength  =  10 nanometers</span>

This is the region of X-rays.
5 0
2 years ago
Read 2 more answers
A student is using a 68 ohm resistor to build a circuit with a voltage source. If the student
qwelly [4]

Answer:

48.96V

Explanation:

Given parameters:

Resistance  = 68Ω

Current  = 0.72A

Unknown:

Voltage  = ?

Solution:

According to ohm's law;

           V = IR

V is the voltage

I is the current

R is the resistance

  Now insert the parameters and solve;

      V  = 68 x 0.72 = 48.96V

6 0
3 years ago
Two 0.006 Kg bullets are fired with speeds of 20.0 m/s and 50.0 m/s respectively. What are their kinetic energies? Which bullet
SashulF [63]

Answer:

a) Kinetic energies

K₁ = 1.2 J

K₂ = 7.5 J

b) The bullet that has the highest kinetic energy is the one with the highest speed , v = 50 m/s , K₂ = 7.5 J

c) K₂ -K₁  = 6.3 J

Explanation:

The kinetic energy (K) is that due to the movement of a body and is calculated as follows:

K = (1/2) m*v²  (J)

Where :

m : the mass of the body ( kg)

v is the speed of the body (m/s)

Data

m₁ = m₂ = 0.006 Kg

v₁ = 20 m/s

v₂ = 50 m/s

a)Calculation of the kinetic energy

K₁ = (1/2) (m₁)*(v₁)²

K₁ = (1/2) (0.006)*(20)²

K₁ = 1.2 J

K₂= (1/2) (m₂)*(v₂)²

K₂ = (1/2) (0.006)*(50)²

K₂ = 7.5 J

b) K₂ ˃ K₁

The bullet that has the highest kinetic energy is the one with the highest speed , v = 50 m/s, K₂ = 7.5 J

c) Difference of their kinetic energies (K₂ -K₁)

K₂ -K₁  = 7.5 J - 1.2 J = 6,3 J

5 0
3 years ago
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