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Leokris [45]
4 years ago
14

MANY POINTS!!! PLZ! I NEED HELP!!!

Physics
1 answer:
liq [111]4 years ago
8 0

Cetane rating of the diesel ensures the low temperature and uniform combustion. Centane number is just opposite to the octane number of petrol engine, cetane number of diesel determines at which temperature the diesel will going to autoignite.

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Juan, a biologist, notices that a particular group of hummingbirds leaves during the colder winter months and returns during the
Katena32 [7]

Answer:

C. Tag the hummingbirds with transmitters and track their movement.

Explanation:

Hypothesis refers to the conclusion of the analysis found on the grounds of certain observations. The hypothesis is further tested and verified by performing certain experiments. In the given excerpt, Juan hypothesizes that certain group of hummingbirds fly to certain locations depending upon the season. To test the hypothesis, Juan can experiment with finding and tracking the hummingbirds and the direction in which they fly. Tagging the hummingbirds with transmitters and tracking their movement would help Juan concluding about the hypothesis.

4 0
3 years ago
A plastic tube allows a flow of 12.9 cm°/s of
VARVARA [1.3K]

Answer:

It will take 17.5968 s  to fill a bottle with water.

Explanation:

Total capacity of tube =227 cm.

Rate of full up the water in the tube =12.9 $\mathrm{cm}^{\circ} / \mathrm{s}$

Total full up the tube = rate \times time

T=r \times t

227 \mathrm{~cm}$$=12.9 \mathrm{~cm}^{\circ} / \mathrm{s} \times t

t=\frac{227}{12.9}

=17.5968s

Learn more about seconds, refer :

brainly.com/question/1781825

6 0
3 years ago
15. What is the impedance of a series combination of a resistance of 1KM and a capacitance of a capacitor 2 µF at a frequency of
GrogVix [38]

Answer:

Z = 1879.64 Ω = 1.879 KΩ

Explanation:

First, we will find the capacitive reactance of the capacitor:

X_{c} = \frac{1}{2\pi fc}\\

where,

Xc = Capacitive Reactance = ?

f = frequency = 50 Hz

C = Capacitance = 2 μF = 2 x 10⁻⁶ F

Therefore,

X_{c} = \frac{1}{2\pi(50\ Hz)(2\ x\ 10^{-6} F)}\\X_{c} =  1591.55\ \Omega

This is an RC series circuit. In the RC circuit the value of impedance is given by the following formula:

Z = \sqrt{R^2 + X_{c}^2}\\Z = \sqrt{(1000\ \Omega)^2 + (1591.55\ \Omega)^2}\\

<u>Z = 1879.64 Ω = 1.879 KΩ</u>

5 0
3 years ago
How long does it take to walk 0.13 miles
LekaFEV [45]
<span>0.13 miles are equal to 209 meters or 228.8 yards and the human walking speed is about 3.1 miles per hour, with all those calculations we can say that every 0.05 miles would take an average person about 1 minute, and if we add 0.10 + 0.03 it would be about 4-5 minutes to travel that short distance.</span>
5 0
4 years ago
Recalculate 100 km/h to m/s
qwelly [4]

= 27.777

Explanation:

A kilometer has 1,000 meters, and an hour has 3,600 seconds, so 100 kilometers per hour is: 100 x 1,000 / 3,600 = 27.777... m/s.

4 0
3 years ago
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