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3 years ago

What are the ways in which captive breeding helps protect biodiversity? Check all that apply.

Physics

1 answer:

pogonyaev3 years ago

4 0

Captive breeding can increase population numbers

Captive breeding can result in the eventual release of offspring into the wild.

Explanation:

Captive breeding involves propagating the numbers of a species of plant or animal in a controlled environment- away from the wild or natural habitat of the species. Captive breeding is especially done to improve the numbers of a critically endangered species to prevent them from spiraling down to extinction. The offspring are later steadily weaned by introducing them into the wild gradually until they can fully independently go about into the wild.

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Radioactive nuclei decay to become unstable. Is this true or false?

Damm [24]

The unstable nuclei undergo radioactive decay. The nucleus decay in form of emitting the radiations or changing into the different chemical element.

Thus, the nucleus decay takes place till the nuclei become stable.

Hence, given statement is false.

5 0

1 year ago

The common electrical wall receptacle voltage in North America is often referred to as 120 volts AC. One hundred twenty volts is

Vika [28.1K]

Answer:

120 volts is the root mean square (rms) average of the voltage as it varies with time.

Explanation:

A. The average voltage over many weeks of time (false)

Reason: Average AC voltage over one cycle is cycle (from one peak to other) is zero and so over many weeks of time it is zero.

B. The peak voltage from an AC wall receptacle (false)

Reason: The peak voltage of an AC source in North America is zero.

C. The arithmetic mean of the voltage as it varies with time (false)

Reason: Arithmetic mean AC voltage over one cycle is cycle (from one peak to other) is zero and so over many weeks of time it is zero.

D. One-half the peak voltage (false)

Peak voltage =170 Volts

One-half the peak voltage = 85 volts

E. The root mean square (rms) average of the voltage as it varies with time (True)

Reason:

The peak voltage and root mean square voltage are related by:

$V_{rms}=\frac{V_{p}}{\sqrt{2} }\\\\V_{rms}=\frac{170}\sqrt{2}V_{rms}\\\\V_{rms}=120 Volts$

Average value of voltage over one cycle is zero, so instead of calculating average voltage for AC peak voltage is first squared and the mean is calculated.

5 0

3 years ago

Band of which of these colours are not seen in a spectrum

Ede4ka [16]

The only colours that are in the spectrum are red, orange, yellow, green, blue, indigo and violet. hope this helps!

7 0

3 years ago

At takeoff, the horizontal and vertical velocity of long jumper are 57.8 m/s and 5.6 m/s respectively. What is the resultant vel

Lady bird [3.3K]

Apply the Pythagorean theorem to get the resultant velocity:

V = $\sqrt{Vx^{2}+Vy^{2}}$

Given values:

Vx = 57.8m/s

Vy = 5.6m/s

Plug in and solve for V:

V = 58.1m/s

EDIT: Let's get the direction of the resultant velocity as well.

This equation will give the angle of the velocity as measured off of the ground:

θ = tan⁻¹(Vy/Vx)

Again, the given values are:

Vx = 57.8m/s

Vy = 5.6m/s

Plug in the values and solve for the angle θ:

θ = tan⁻¹(5.6/57.8)

θ = 5.5°

The resultant velocity is oriented 5.5° off the ground.

5 0

3 years ago

In order to do work on an object, the force you exert must be

Vedmedyk [2.9K]

The force must be made over a distance

4 0

3 years ago