Which of the following instruments gives a pure note when sound?
A. Talking drum
B. Tuning fork
C. Siren
D. Guitar

B

Professor1234: Which of the following instruments gives a pure note when sound?
A. Talking drum
B. Tuning fork
C. Siren
D. Guitar

tuning fork. Nt sure

Professor1234: A mass of 700kg falling 0.2m is used to drive a pile of mass 500kg into the ground. Assuming, there is no rebound,
A. Find the common velocity
B. FIND the loss of kinetic energy
C. If the resistance of the ground is constant, find its Value if the pole is driven 75mm?

falling 0.2m or 0.2m/s

Nice, do we have English students here? Or is this only for sciences.

Professor1234: A mass of 700kg falling 0.2m is used to drive a pile of mass 500kg into the ground. Assuming, there is no rebound,
A. Find the common velocity
B. FIND the loss of kinetic energy
C. If the resistance of the ground is constant, find its Value if the pole is driven 75mm?

a. 2.37m/s.
B. 591.6j

Kudos the Prof. & all d Gurus in d hauz for reawaken this tutorial back again. Infact d Tsunami dat befell dis site cause so many negatives part. Once again I welcome u all

What current will deposit 3.25g zinc in 2hrs?

A) 3.25A
B) 2.00A
C) 1.34A
D) 0.67A

[Zn= 65, F= 956500 mol]

If a wire 30cm long is extended to 30.5cm by a force 300N. Find the strain energy of the wire.

A) 7.50J
B) 750.00J
C) 75.00J
D) 0.75j

FrancisTony: What current will deposit 3.25g zinc in 2hrs?

A) 3.25A
B) 2.00A
C) 1.34A
D) 0.67A

[Zn= 65, F= 956500 mol]

1.34A

Immanuelar:

1.34A

Show working. Thanks

FrancisTony:

Show working. Thanks

Ok,
Equ-Zn2+ +2e- =zn

Mass=(Q/2F) x molarMass

3.25 =(Q/2x96500) x 65
65Q=627250
Q=9650

Since Q=IT
T=2x60x60
9650 =I x (2x60x60)
I=1.34A.

Pls in the formula; mass= (Q/2F) x Molar mass

The 2 attached to the F in the formula above was it gotten from 2e present in zinc??

christlyke: Pls in the formula; mass= (Q/2F) x Molar mass

The 2 attached to the F in the formula above was it gotten from 2e present in zinc??

I'm getting an error wit my 4mer account, so it's still me.

Yes, d real formular is:
Mass=(Q/F) x molarMass.

TheCodeWriter:

I'm getting an error wit my 4mer account, so it's still me.

Yes, d real formular is:
Mass=(Q/F) x molarMass.

Thanks man.

please anyone can i get topics to focus on for physics, chemistry and biology?

christlyke:

Thanks man.

U re welcm bro.

orluuchi: please anyone can i get topics to focus on for physics, chemistry and biology?

Focus on d topics which are mainly asked in ur school's putme ...If not, focus on d whole syllabus ..

Professor1234:

Learn from this , complied by me

1. Sulphur is commonly known as brimstones

2. The odour of Nitrogen[i]oxide is unknown because on exposure to air it forms N02

3. Berrylium oxide is amphoteric in nature

4. Psammophyte are those plant that grows on sandy soil

5. Solvay process used to produced Na2c03 is sometimes called ammonia solvay process

6. Titanium iv oxide sometimes called rutile, it is used in the production of red paint

7. Ammonia burns in air with greenish flame

8. Planck constant has the same dimension with angular momentum

9. Seconds per faraday is equivalent to Workdone in Joules

10. Down syndrome is made up of 47 chromsomes

11. Menopause occur in Female while andropause occur in male. Andropause is also known as Climaterics

12. Maxillipeds in the crayfish is to aid swimming

Compiled by *prof ade*

Thanks a lot...

1. The smoke cell experiment is used for what?
2.Lampbrush is common in ____
3. What are d ligands present in hexacyanoferrate(II) and what is the shape of d complex ion?

4. What is another name for d CD8 cells...
Pls let's make this thread lively again as putme is already on the way...

Professor1234:

Learn from this , complied by me

1. Sulphur is commonly known as brimstones

2. The odour of Nitrogen[i]oxide is unknown because on exposure to air it forms N02

3. Berrylium oxide is amphoteric in nature

4. Psammophyte are those plant that grows on sandy soil

5. Solvay process used to produced Na2c03 is sometimes called ammonia solvay process

6. Titanium iv oxide sometimes called rutile, it is used in the production of red paint

7. Ammonia burns in air with greenish flame

8. Planck constant has the same dimension with angular momentum

9. Seconds per faraday is equivalent to Workdone in Joules

10. Down syndrome is made up of 47 chromsomes

11. Menopause occur in Female while andropause occur in male. Andropause is also known as Climaterics

12. Maxillipeds in the crayfish is to aid swimming

Compiled by *prof ade*

12

Professor1234:

Learn from this , complied by me

1. Sulphur is commonly known as brimstones

2. The odour of Nitrogen[i]oxide is unknown because on exposure to air it forms N02

3. Berrylium oxide is amphoteric in nature

4. Psammophyte are those plant that grows on sandy soil

5. Solvay process used to produced Na2c03 is sometimes called ammonia solvay process

6. Titanium iv oxide sometimes called rutile, it is used in the production of red paint

7. Ammonia burns in air with greenish flame

8. Planck constant has the same dimension with angular momentum

9. Seconds per faraday is equivalent to Workdone in Joules

10. Down syndrome is made up of 47 chromsomes

11. Menopause occur in Female while andropause occur in male. Andropause is also known as Climaterics

12. Maxillipeds in the crayfish is to aid swimming

Compiled by *prof ade*

Thnks
12. Maxillipeds in crayfish is used for feeding

Thewhizzkid1: 1. The smoke cell experiment is used for what?
2.Lampbrush is common in ____
3. What are d ligands present in hexacyanoferrate(II) and what is the shape of d complex ion?

4. What is another name for d CD8 cells...
Pls let's make this thread lively again as putme is already on the way...

1. Smoke cell experiment is used to show brownian motion
2. Lampbrush chromosome in the salivary gland

TheCodeWriter:

Thnks
12. Maxillipeds in crayfish is used for feeding

brother,tnx it was a mistake am grateful

Professor1234:

Learn from this , complied by me

1. Sulphur is commonly known as brimstones

2. The odour of Nitrogen[i]oxide is unknown because on exposure to air it forms N02

3. Berrylium oxide is amphoteric in nature

4. Psammophyte are those plant that grows on sandy soil

5. Solvay process used to produced Na2c03 is sometimes called ammonia solvay process

6. Titanium iv oxide sometimes called rutile, it is used in the production of red paint

7. Ammonia burns in air with greenish flame

8. Planck constant has the same dimension with angular momentum

9. Seconds per faraday is equivalent to Workdone in Joules

10. Down syndrome is made up of 47 chromsomes

11. Menopause occur in Female while andropause occur in male. Andropause is also known as Climaterics


12. Maxillipeds in the crayfish is to aid swimming

Compiled by *prof ade*

@ 2, I doubt if that's true. Nitrogen (1) oxide is known to have a pleasant odour and does not react with oxygen to form NO2; it is Nitrogen (2) oxide that does so. In fact, one of the distinguishing factor between N2o and o2 is it pleasant odour as both of them support combustion by rekindling a glowing splint.

mgb4reel:
@ 2, I doubt if that's true. Nitrogen (1) oxide is known to have a pleasant odour and does not react with oxygen to form NO2; it is Nitrogen (2) oxide that does so. In fact, one of the distinguishing factor between N2o and o2 is it pleasant odour as both of them support combustion by rekindling a glowing splint.

Wow, u're so observant.

Professor1234:

1. Smoke cell experiment is used to show brownian motion
2. Lampbrush chromosome in the salivary gland

Lampbrush is found in oocytes...

Practice JAMB, POST UTME CBT questions at

www.e-testpedia.com

Thewhizzkid1: Focus on d topics which are mainly asked in ur school's putme ...If not, focus on d whole syllabus ..

thanks

mgb4reel:
@ 2, I doubt if that's true. Nitrogen (1) oxide is known to have a pleasant odour and does not react with oxygen to form NO2; it is Nitrogen (2) oxide that does so. In fact, one of the distinguishing factor between N2o and o2 is it pleasant odour as both of them support combustion by rekindling a glowing splint.

guy tnx 4 dat i mean Nitrogen ii oxide[N0], it was a mistake tnx