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3 years ago

The eggs of reptiles are fertilized _____.

Physics

2 answers:

kicyunya [14]3 years ago

6 0

Answer:

by a male sperm

Explanation:

frozen [14]3 years ago

4 0

Answer:

Reptile Reproduction. Most reptiles reproduce sexually and have internal fertilization. Males have one or two penises that pass sperm from their cloaca to the cloaca of a female. Fertilization occurs within the cloaca, and fertilized eggs leave the female's body through the opening in the cloaca

Explanation:

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Beams of high-speed protons can be produced in "guns" using electric fields to accelerate the protons. A certain gun has an elec

Natasha2012 [34]

Answer: v = 2.75 * 10^7 m/s

Explanation: Since the electric field is a uniform one and the distance is small, the motion of the electron is of a constant acceleration, hence newton's laws of motion is applicable.

From the question

E=strength of electric field = 214N/c

q=magnitude of an electronic charge = 1.609* 10^-16c

m= mass of an electronic charge = 9.11*10^-31kg

v = velocity of electron.

S= distance covered = 1cm = 0.01m

a = acceleration of electron.

F = ma but F=Eq

Eq = ma.

a = Eq/m

a = 214 * 1.609*10^-16/ 9.11 * 10^-31

a = 344.32 * 10^-16/ 9.11 * 10 ^-31

a = 3. 779* 10^16 m/s²

Before the electron is accelerated, they are always not moving, hence initial velocity (u) = 0.

By using the equation of motion, we have

v² = u² + 2aS

But u = 0

v² = 2aS

v²= 2* 3.779*10^16 * 0.01

v² = 7.558 * 10^14

v = √7.558 * 10^14

v = 2.75 * 10^7 m/s.

6 0

3 years ago

Two identical metal spheres a and b are connected by a plastic rod. both are initially neutral. 1.0×1012 electrons are added to

Ann [662]

The plastic rod is made of insulator (plastic), so it does not allow charges moving from one sphere to another. This means that all the electrons given to sphere A will remain on sphere A.

The number of electrons initially given to sphere A is $N=1.0 \cdot 10^{12}$ , and since the charge of 1 electron is $e=-1.6 \cdot 10^{-19} C$ , the net charge left on sphere A after the removal of the rod will be
$Q=N e = 1.0 \cdot 10^{12}(-1.6 \cdot 10^{-19} C)=-1.6.0 \cdot 10^{-7} C$

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3 years ago

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Ryan hypothesizes that darker colors heat up faster. he places a thermometer inside a red wool sock, a green cotton glove, and a

solmaris [256]

There's no "control" they all differ. If they were all exactly the same size shape and material it would be doable.

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3 years ago

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What describes Newton’s law of universal gravitation

VikaD [51]

Newton's law of universal gravitation gives the gravitational force between two objects:

F = GMm/r²

F = gravitational force, G = gravitational constant, M & m are the masses of the two objects, r = distance between the objects

8 0

4 years ago

Two long, parallel wires each carry the same current I, but the two currents are anti-parallel. The two wires are a distance r a

Georgia [21]

Answer:

8 x 10⁻⁷ x I / r

Explanation:

Two parallel long wires are carrying current I . Let the direction be towards the right in the farthest and towards the left in the nearest. Magnetic field due to current I at a distance d is given by the expression

B = μ₀ 2 I / 4π d

I the present case distance d = r/2

Magnetic field due to one wire at point d = r/2 is

B₁ = μ₀ 2 I / (4π r / 2 )

= 10⁻⁷ x 4I / r

Magnetic field due to the other wire at point d = r/2 is

B₂ = μ₀ 2 I / (4π r / 2 )

= 10⁻⁷ x 4I / r

Direction of magnetic field due to both the wires at the mid point P will be same . It will be in downward direction in the given scenario

So total magnetic field

B = B₁ + B₂

= 2 x 10⁻⁷ x 4I / r

= 8 x 10⁻⁷ x I / r

6 0

3 years ago