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astra-53 [7]
3 years ago
7

Explain how scientists know that elephants and hyraxes are related. Be sure to include anatomical similarities as well as fossil

evidence in your explanation.
Physics
2 answers:
leonid [27]3 years ago
8 0

<em>Hyraxes, elephants and dugongs are more closely related to one another than to any other living animal.  Well, that's not exactly true. The closest surviving relative of the dugong is the manatee, a fresh-water, New-World version of itself. Apart from this, and the fact that there are two species of elephant and several of hyrax, it's absolutely true. Hyraxes, elephants and dugongs evolved from a single common ancestor.</em>

                                          Hope This Helps

mojhsa [17]3 years ago
7 0

This is the exact answer:

Elephants and hyraxes share many anatomical similarities. They both have flat, hoof-like nails on the tips of their toes. They also have four toes on their front feet and three toes on their rear feet. Elephants and hyraxes both develop tusks from their incisor teeth instead of their canine teeth, like most other mammals. In addition to the anatomical similarities, fossil evidence has revealed that hyraxes and elephants share a 40-million-year-old ancestor.

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What is the energy of a photon whose frequency is 5.2 x 10 to the 15th s -1? Cassie(:
Zielflug [23.3K]
E=hf
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h - Planck constant
f - frequiency

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Equals 3.44552 time 10 in the minus 18th
7 0
3 years ago
a shopping bag can provide an upward force of 65N before breaking. A shopper puts 5 kg of groceries in the bag. If the shopper t
kipiarov [429]

Answer:

Since Force is Mass * Acceleration, the equation would be:

5kg * 2m^2 = 10N

<em>(10N is less than 65N)</em>

Therefore, it would not be enough force for the bag to break.

6 0
4 years ago
A cell has an internal resistance of 0.02ohms and e.m.f of 2.0v calculate it's terminal p.d if it's delivers (a)5A ( b)50A​
Aleksandr-060686 [28]

Answer:

(a) The terminal voltage of the cell is <u>1.9 V.</u>

(b) The terminal voltage of the cell is <u>1.0 V.</u>

Explanation:

Given:

(a)

E.M.F of the cell (E) = 2.0 V

Internal resistance of the cell (r) = 0.02 ohms

Current passing through the cell (I) = 5 A

Now, the potential difference across the terminals of the cell is given as:

V=E-Ir

Plug in the given values and solve for 'V'. This gives,

V=2.0-(5\times 0.02)\\\\V=2.0-0.1=1.9\ V

Therefore, the terminal voltage of the cell is 1.9 V.

(b)

E.M.F of the cell (E) = 2.0 V

Internal resistance of the cell (r) = 0.02 ohms

Current passing through the cell (I) = 50 A

Now, the potential difference across the terminals of the cell is given as:

V=E-Ir

Plug in the given values and solve for 'V'. This gives,

V=2.0-(50\times 0.02)\\\\V=2.0-1.0=1.0\ V

Therefore, the terminal voltage of the cell is 1.0 V.

4 0
3 years ago
Why are different constellations<br> of stars seen during different<br> seasons?
slamgirl [31]
Actually, they're not.  There's a group of stars and constellations arranged
around the pole of the sky that's visible at any time of any dark, clear night,
all year around.  And any star or constellation in the rest of the sky is visible
for roughly 11 out of every 12 months ... at SOME time of the night. 

Constellations appear to change drastically from one season to the next,
and even from one month to the next, only if you do your stargazing around
the same time every night.

Why does the night sky change at various times of the year ?  Here's how to
think about it:

The Earth spins once a day. You spin along with the Earth, and your clock is
built to follow the sun . "Noon" is the time when the sun is directly over your
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Let's say that you go out and look at the stars tonight at midnight, when you're
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In 6 months from now, when you and the Earth are halfway around on the other
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THAT's why stars and constellations appear to be in a different part of the sky,
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5 0
4 years ago
Read 2 more answers
Can y’all please help me with this 3 part question?
klio [65]

Answer:

Vf = 210 [m/s]

Av = 105 [m/s]

y = 2205 [m]

Explanation:

To solve this problem we must use the following formula of kinematics.

v_{f} =v_{o} +g*t

where:

Vf = final velocity [m/s]

Vo = initial velocity = 0 (released from the rest)

g = gravity acceleration = 10 [m/s²]

t = time = 21 [s]

Vf = 0 + (10*21)

Vf = 210 [m/s]

Note: The positive sign for the gravity acceleration means that the object is falling in the same direction of the gravity acceleration (downwards)

The average speed is defined as the sum of the final speed plus the initial speed divided by two. (the initial velocity is zero)

Av = (210 + 0)/2

Av = 105 [m/s]

To calculate the distance we must use the following equation of kinematics

v_{f} ^{2} =v_{o} ^{2} +2*g*y\\\\(210)^{2} = 0 + (2*10*y)

44100 = 20*y

y = 2205 [m]

5 0
3 years ago
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