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larisa86 [58]
3 years ago
6

The chicken's eggs are fertilized interally or externally

Physics
1 answer:
zlopas [31]3 years ago
6 0
The chicken's eggs are fertilized interally
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An infant's toy has a 120 g wooden animal hanging from a spring. If pulled down gently, the animal oscillates up and down with a
Morgarella [4.7K]

Answer:

0.37 m

Explanation:

The angular frequency, ω, of a loaded spring is related to the period, T,  by

\omega = \dfrac{2\pi}{T}

The maximum velocity of the oscillation occurs at the equilibrium point and is given by

v = \omega A

A is the amplitude or maximum displacement from the equilibrium.

v = \dfrac{2\pi A}{T}

From the the question, T = 0.58 and A = 25 cm = 0.25 m. Taking π as 3.142,

v = \dfrac{2\times3.142\times0.25\text{ m}}{0.58\text{ s}} = 2.71 \text{ m/s}

To determine the height we reached, we consider the beginning of the vertical motion as the equilibrium point with velocity, v. Since it is against gravity, acceleration of gravity is negative. At maximum height, the final velocity is 0 m/s. We use the equation

v_f^2 = v_i^2+2ah

v_f is the final velocity, v_i is the initial velocity (same as v above), a is acceleration of gravity and h is the height.

h = \dfrac{v_f^2 - v_i^2}{2a}

h = \dfrac{0^2 - 2.71^2}{2\times-9.81} = 0.37 \text{ m}

3 0
3 years ago
Which branch of physics deals with the study of force, energy, and motion?
dexar [7]
The correct answer is Mechanics
4 0
3 years ago
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The table shows the changes in velocity for several different cars. Each change takes place over a 10-second interval. Which car
sesenic [268]
Car B, Car C, And Car E Are either speeding up or slowing down
6 0
3 years ago
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Before using a string in a comparison, you can use either the To Upper method or the To Lower method to convert the string to up
Burka [1]

Answer:

True

Explanation:

If there's no preference over the string case (upper case or lower case), one can convert both strings to upper case or to lowercase and then compare the converted strings to test if they're equal or not.

An Illustration is

string a = "Boy"

string b = 'bOy"

if(a.ToUpper() == b.ToUpper() || a.ToLower() == b.ToLower())

{

Print "Equal Strings"

}

else

{

Print "Strings are not equal";

}

The above will first convert both strings and then compare.

Since they are the same (after conversion), the statement "Equal Strings" will be printed, without the quotes

5 0
3 years ago
Why can water dissolve some ionic compounds, like NH4Cl, as well as some nonionic compounds, like methanol?
nirvana33 [79]
I think that’s the answer u r looking for
4 0
3 years ago
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