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allochka39001 [22]
3 years ago
8

Who performed classic experiments that supported the semiconservative model of dna replication?

Physics
1 answer:
Salsk061 [2.6K]3 years ago
6 0

Meselson and Stahl

<u>Explanation:</u>

<u></u>

The classic experiment that supported the semiconservative model of dna replication was performed by Matthew Meselson and Franklin W. Stahl. In this model, the two strands of DNA unwind from each other, and each acts as a template for synthesis of a new, complementary strand. This results in two DNA molecules with one original strand and one new strand. They used E. coli bacteria as a model system.

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A simple pendulum consists of a small object with mass m = 1.91 kg and a massless string with length l = 1 m. Halfway down the s
castortr0y [4]

Answer:

around the coop

Explanation:

8 0
3 years ago
The distance between two adjacent peaks on a wave is called the wavelength. The wavelength of a beam of ultraviolet light is 113
Vesna [10]

Answer:

0.000000113 or 1.13*10^{-7} meters

Explanation:

One nanometer is 10^{-9} meters. So 113 nanometers would be 113*10^{-9}, or 1.13*10^{-7} meters. That's expessed on "cientific notation." On the "usual" notation, it will be 0.000000113 meters.

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3 years ago
A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 29° above the horizontal. If the norma
Zina [86]

<u>Answer:</u>

The force F applied to the handle = 330.03 N

<u>Explanation:</u>

    The force can be resolved in to two, horizontal component and vertical component. If θ is the angle between horizontal and applied force we have

     Horizontal component of force = F cos θ

    Vertical component of force = F sin θ

  In this problem normal force exerted on the suitcase is 160 N, that is  vertical component of force = 160 N and angle θ = 29⁰.

 So, F sin 29 = 160

        F = 330.03 N

 The force F applied to the handle = 330.03 N

6 0
4 years ago
Read 2 more answers
What would increase the force of gravity between two objects?
yulyashka [42]
By Newton's Law of Universal Gravitation.

F =  GMm/r²

Where F is Force of Gravitation, M = Mass of first object, m = mass of second object, r = distance of separation

From the formula, you can see that if the masses, M and m, increased, the value of F would definitely increase as well.

And if r increased the value of F would be reduced because you would be dividing by a bigger number, but when the value of r is decreased the value of F would be increased, because you would then be dividing by something smaller. Note the r is at the denominator of the formula.

So F would increase if there was increase in Masses and decrease in distance.

So the answer is C. a and b.
3 0
3 years ago
A 10-g bullet moving horizontally with a speed of 1.8 km/s strikes and passes through a 5.0-kg block initially at rest on a hori
UNO [17]

Answer:

6.4 J

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m = mass of the bullet = 10 g = 0.010 kg

v = initial velocity of bullet before collision = 1.8 km/s = 1800 m/s

v'  = final velocity of the bullet after collision = 1 km/s = 1000 m/s

M = mass of the block = 5 kg

V = initial velocity of block before collision = 0 m/s

V'  = final velocity of the block after collision = ?

Using conservation of momentum

mv + MV = mv' + MV'

(0.010) (1800) + (5) (0) = (0.010) (1000) + (5) V'

V' = 1.6 m/s

Kinetic energy of the block after the collision is given as

KE = (0.5) M V'²

KE = (0.5) (5) (1.6)²

KE = 6.4 J

4 0
4 years ago
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