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3 years ago

Which trait shared by dolphins and bats possibly lead to the evolution of echolocation in these two animal groups?

Physics

2 answers:

lina2011 [118]3 years ago

8 0

Answer:

the need to move quickly through dark environments

Explanation:

Dolphins and Bats are those creature who uses echolocation in the path which is one property which give them edge in night because they can easily locate things which any other creature face difficult to locate.

In echolocation what bat and dolphins do is the emit ultra sonic waves which gets deflected from the object and from the deflection they get to know the position of the objects.

s344n2d4d5 [400]3 years ago

6 0

The need to quickly move through dark environments. <span />

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What voltage is applied to a 20 ohm fixed resistor if the current through the resistor is 1.5 amps?

pantera1 [17]

Answer:

SDFK fbsdfasdgasdfgasdfg⊃⊃⊃⊃⊃⊃×∈⇔⇔⇔

Explanation:

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3 years ago

All matter has electrical and magnetic properties because the atoms that make up matter are held together by electromagnetic for

leva [86]

Answer:

Charge

Explanation:

Charge is a fundamental property of all matter. All matter has electrical and magnetic properties because the atoms that make up matter are held together by electromagnetic forces.

These charges are usually positive and negative charges. When these charges which make up an atom (positive and negative) are equal, the atom is said to be electrically neutral. When positive charge is greater than negative charge, the atom is said to positively charged. Also, if the number of negative charges are more in an atom, the atom is said to be negatively charged.

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3 years ago

how does the number of chromosomes in a persons sex compare with the number of chromosome in the body cell

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3 years ago

Coherent light of wavelength 540 nm passes through a pair of thin slits that are 3.4 × 10-5 m apart. At what angle away from the

Scrat [10]

Answer: $1.8\°$

Explanation:

The diffraction angles $\theta_{n}$ when we have a slit divided into $n$ parts are obtained by the following equation:

$dsin\theta_{n}=n\lambda$ (1)

Where:

$d=3.4(10)^{-5}m$ is the width of the slit

$\lambda=540 nm=540(10)^{-9}m$ is the wavelength of the light

$n$ is an integer different from zero.

Now, the second-order diffraction angle is given when $n=2$ , hence equation (1) becomes:

$dsin\theta_{2}=2\lambda$ (2)

Now we have to find the value of $\theta_{2}$ :

$sin\theta_{2}=\frac{2\lambda}{d}$ (3)

Then:

$\theta_{2}=arcsin(\frac{2\lambda}{d})$ (4)

$\theta_{2}=arcsin(\frac{2(540(10)^{-9}m)}{3.4(10)^{-5}m})$ (5)

Finally:

$\theta_{2}=1.8\°$ (6)

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3 years ago

Which element of a valid contract is established by getting the signatures of all parties?

sweet [91]

The element of a valid contract which is established by getting the signatures of all parties is <u>mutual agreement</u>

<h3>What is an element of a valid contract?</h3>

An element of a valid contract simply refers to that promise made between two or more parties that which allow the courts to make judgement.

Some elements of valid contract are:

Offer
Acceptance
Consideration
Intention to create legal relation
Certainty and capacity.

So therefore, the element of a valid contract which is established by getting the signatures of all parties is mutual agreement

Learn more about elements of a valid contract:

brainly.com/question/15101023

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1 year ago