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enyata [817]
3 years ago
11

Scientists believe that the boundary stratum between the Cretaceous and Paleogene was caused by an asteroid. What evidence is mo

st consistent with this theory?
Physics
2 answers:
omeli [17]3 years ago
3 0

Answer:

Because there was fewer fossils

Explanation:

Artyom0805 [142]3 years ago
3 0

Answer:

Actually the answer is "The stratum contains iridium.".

Explanation:

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In an emergency an airplane needs to land on a short runway at Albany County Airport. The plane comes in for a landing with a sp
zvonat [6]

Answer:

t = 13.43 s

Explanation:

In order to find the minimum time required by the plane to stop, we will use the first equation of motion. The first equation of motion is written as follows:

Vf = Vi + at

where,

Vf = Final Velocity of the Plane = 0 m/s (Since, the plane finally stops)

Vi = Initial Velocity of the Plane = 95 m/s

a = deceleration of the plane = - 7.07 m/s²

t = minimum time interval needed to stop the plane = ?

Therefore,

0 m/s = 95 m/s + (- 7.07 m/s²)t

t = (95 m/s)/(7.07 m/s²)

<u>t = 13.43 s</u>

6 0
3 years ago
An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 V for 0.65 ms. The resistance of t
9966 [12]

Answer: a) 0.11 Amp b) 0.000429 Joules c) 0.000514 watt

Explanation:

a)current

I=V/r I=6.0/550 =1.1*10^-2 A

b) energy

E= 1.1*10^-2 x (6.0) x 0.00065s(<-- remember to convert ms to seconds) = 0.000429J

C) Average power

P = (0.000429 x 72) / 60

P = 0.000514 W

6 0
3 years ago
Suppose that we replace the aluminum with a mystery metal and repeat the experiment in the video. As in the video, the mass of t
dimaraw [331]

Answer:

b) one-third as great.

Explanation:

As we know that same heat is supplied in this experiment

so we will have

Q = ms\Delta T

now we know that both are initially at same temperature

then their final temperatures are

T_1 = 40 degree

T_2 = 80 degree

now we have

m_1s_1 (40 - 20) = m_2s_2(80 - 20)

so we have

m_2s_2 = \frac{20}{60} m_1s_1

so heat capacity of mystery metal is 1/3 times that of water

6 0
3 years ago
Read 2 more answers
Identify some of the effects of urbanization
dangina [55]

Answer: Heyyyyyyyyyyyyyy

here you goo

"<u>some of the effects of urbanization</u>"

<em>Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments</em>

<u><em>"hope this helps"</em></u>

4 0
4 years ago
An astronomical telescope has an objective of diameter 20 cm with a focal length of 180 cm. the telescope is used with an eyepie
Bingel [31]
By definition;
M = fo/fe

Where,
M = Angular magnification
fo = Focal length of objective lens
fe = Focal length of eyepiece lens

From the information given;
M = 180/30 = 6
8 0
3 years ago
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