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2 years ago

I am going to have to present tomorrow D:. How much phosphorus does sweet corn require per acre?

Biology

2 answers:

Stels [109]2 years ago

8 0

Do you still need help? Do you need a simple answer or a paragraph

kaheart [24]2 years ago

7 0

Answer:

Explanation:

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Help with this 4 i mark u as brainlist if u answer them correctly 20 points

vodka [1.7K]

Answer:

1. Decibels

2. whisper - 20-decibels, normal talking - 60 decibels, rock concert - 120 decibels

3. 10,000

4. A Jet plane

Explanation:

1. The unit refers to what specifically is being measured. If the graph was of heights, it could be metres, centimetres, feet, or inches, for example. In this case, the graph is of sound level. We can see beside the Y axis label "Sound Level" that the unit is decibels.

2. Take each individual sound source and look at how tall the bars are (purple rectangles). For each one, we can look across to the Y axis (left side) and see the corresponding sound level for each

3. We were told in the introduction to the question that for every 10 decibel increase, the sound increases by 10 times. So going from 10 -> 20 decibels represents a 10x increase, and 10-> 30 represents a 100x increase.

To figure out the increase from whisper (20) to normal talking (60), take away 20 from 60 to see how many decibels difference there are between the two levels.

60-20 = 40

There is a 40 decibel increase. If 10 decibel difference = 10x and 20 decibel difference = 100x, then 30 = 1000x, and 40 = 10,000x (keep adding a 0 with every 10!)

4. We can see from the graph that the pain threshold is 120 decibels. The sound level that is greater than the pain threshold (meaning it would be painful) is the jet plane.

3 0

2 years ago

Need help on the second question I got it wrong

sasho [114]

Answer:

Sea Urchin

Explanation:

Basically any animal that the Sea Otter eats

4 0

2 years ago

What would a dog living now and a cat living thousands of years ago have in common

Charra [1.4K]

They are/were both alive and they are both Animals

3 0

2 years ago

I need help with the awnsers

AleksAgata [21]

First of all, this was a bit garbled up, so it is sort of incomplete.

You gave me a total of 43 words, and I only counted 41 slots on the crossword graph itself, which is problematic.

I got as far as I could, but some of the words either weren't provided, or the spaces were made incorrectly for the length of these words.

Across:
2. (black / pitch)
7. conservation
9. radiation
12. crest
13 ?
14. <em>whatever you wrote</em>
15. dense
18. ? (radiant)
19. ? (radiant)
20. amperes
23. medium
25. density
26. ?
30. resistance
31. (pitch / black)
34. voltage
35. insulator
38. amplitudes
39. thermal
40. ?
41. wavelength

Down:
1. electromagnetic
3. (conduction/ convection)
4. (convection/ conduction)
5. (current/ radiation)
6. heat
7. chemical
8. transverse
10. energy
11. nuclear
12. circuit
16. electrical
17. electrons
21. mechanical
24. source
28. ?
32. rise
33. MRS CHEN
34. volts
36. sound

7 0

3 years ago

Helpp !

Diano4ka-milaya [45]

Answer:

C im pretty sure

6 0

2 years ago

Read 2 more answers