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Two trains are travelling toward each other at 30.5 m/s relative to the ground. One train in blowing a whistle at 500 Hz. What frequency is heard on the other train in still air?
asked
Nov 21, 2024
Physics
high-school
1
answer
0
votes
95.4k
views
The input and response of a LTI system are x(t) = δ(t) - 2e⁻³ᵗu(t) y(t) = e⁻²ᵗ u(t). Find A. the transfer function B. the impulse responsea C. the LCCDE description of the system.
asked
Oct 21, 2024
Engineering
college
1
answer
2
votes
67.2k
views
What is the purpose of the exit channel in the ribosome?
asked
Oct 12, 2024
Biology
high-school
1
answer
3
votes
54.2k
views
The primary cause of older persons anemia is ____________________.
asked
Aug 16, 2024
Medicine
college
1
answer
3
votes
35.5k
views
NO LINKS!!! Sketch the Empirical Rule normal distribution graph
asked
Sep 12, 2023
Mathematics
college
1
answer
23
votes
194k
views
Which of the following pairs consists of equivalent fractions? 3/4 and 4/5 9/24 and 21/56 4/10 and 10/4 9/12 and 2/3
asked
Aug 1, 2023
Mathematics
high-school
1
answer
3
votes
209k
views
Please help now asap !!!!!!!!!!!!!!!!!
asked
May 2, 2023
Mathematics
high-school
1
answer
2
votes
208k
views
How many inches are in 6 3/4 feet? Enter only a number. Do not include units.
asked
Apr 26, 2023
Mathematics
college
2
answers
11
votes
6.2k
views
Write this number in standard form. (7 x 100) + (4 x 100 ) + (8 x 1,000) help asap. this is a 5th grader problem. thank you. worth 50 points!
asked
Nov 25, 2022
Mathematics
high-school
1
answer
8
votes
64.2k
views
You have a container which has the capacity to hold 3 L water. If it already has 2.25 L water in it, how much more water in mL can you still add to fill it completely?
asked
Oct 1, 2022
Chemistry
college
1
answer
13
votes
1.0k
views
What are three things we should try to limit that we may find on a food label.
asked
Jun 15, 2022
Physics
middle-school
2
answers
22
votes
138k
views
What is the rate of change?
asked
Dec 25, 2021
Mathematics
high-school
1
answer
4
votes
234k
views
Help me please, for science
asked
Nov 25, 2021
Health
high-school
1
answer
0
votes
35.3k
views
Radiation is the direct transfer of energy by __________. A.Electromagnetic waves B.Thermal radiation C.Ultraviolet energy
asked
Oct 18, 2021
Chemistry
middle-school
2
answers
3
votes
34.7k
views
In a certain experiment, a radio transmitter emits sinusoidal electromagnetic waves of frequency 110.0 MHz in opposite directions inside a narrow cavity with reflectors at both ends, causing a standing-wave
asked
Oct 15, 2021
Physics
college
1
answer
1
vote
62.1k
views
(x² + 4x – 22) + (x + 6)
asked
Sep 11, 2021
Mathematics
college
2
answers
4
votes
196k
views
Which term does not belong to the set?. A.Zapatistas b. Mexican Revolution c. U.S. Navy D.Pancho Villa
asked
Sep 10, 2021
History
high-school
2
answers
0
votes
205k
views
HELP!! and pls show direction
asked
Sep 9, 2021
English
college
1
answer
3
votes
139k
views
A researcher determines thatχ2 = 3.76to test for significance for a phi correlation coefficient. What was the decision for this phi correlation test?a) Retain the null hypothesis.b) Reject the null hypothesis
asked
Sep 1, 2021
Mathematics
college
1
answer
2
votes
29.1k
views
I need help ASAP snsbdbdbdbdbbffb
asked
Jul 24, 2021
Mathematics
high-school
1
answer
4
votes
79.3k
views
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