SamanN:


Wtf! I couldn't find any line about this in my text.

I'm not sure of my answer. But I know the pituitary is the master gland and the pancreas doesn't stimulate............its just an insulin production site.

Stanley what's the correct answer?

Guys let's try this....
A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F. If the stone leaves with a velocity of 40m/s, the value of F is
A. 4.0 x 10²N
B. 2.0 x 10³N
C. 4.0 x 10³N
D. 4.0 x 104N

I noticed there's a gross misconception about this question.

I. Its velocity is constant
II. No work is done on the body
III. It has constant acceleration directed away from the centre
IV. The centripetal force is directed towards the centre

Which combination of the above is true of a body moving with constant speed in a circular track?
A. II and IV
B. I and IV
C. II and III
D. I and III

Optimist1998:
Guys let's try this....
A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F. If the stone leaves with a velocity of 40m/s, the value of F is
A. 4.0 x 10²N
B. 2.0 x 10³N
C. 4.0 x 10³N
D. 4.0 x 104N

I noticed there's a gross misconception about this question.

i think its d. but the pq say someting else

a rainbow is viewedthrough a blue sheet of glass. the rainbow will appear. a. white b yellow c. blue d none of the above. explain

Optimist1998:
Guys let's try this....
A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F. If the stone leaves with a velocity of 40m/s, the value of F is
A. 4.0 x 10²N
B. 2.0 x 10³N
C. 4.0 x 10³N
D. 4.0 x 104N

I noticed there's a gross misconception about this question.

Dist=0.2m mass=0.5 V=40m/s
V^2=U^2 + 2as. V=0
-U^2=2as
(-40)^2=2(0.2)xa
1600=0.4a
a=4000
F=ma
F=0.5x4000
F=2000.
Ans=B

castrokiller:
a rainbow is viewedthrough a blue sheet of glass. the rainbow will appear. a. white b yellow c. blue d none of the above. explain

I think it is C... All the colour apart from blue absorbs d blue light but can not reflect it. Only blue reflects. I don't know it might be nonsense but that's what I think

Optimist1998:
I. Its velocity is constant
II. No work is done on the body
III. It has constant acceleration directed away from the centre
IV. The centripetal force is directed towards the centre

Which combination of the above is true of a body moving with constant speed in a circular track?
A. II and IV
B. I and IV
C. II and III
D. I and III

Am sure it is not 3 cos the acc is always directed to towards the center and can't be one also.. I mean its direction is constantly changing I think. Inshort it should be A

felix00:

I think it is C... All the colour apart from blue absorbs d blue light but can not reflect it. Only blue reflects. I don't know it might be nonsense but that's what I think

very well

castrokiller:
very well

castrokiller:
very well

cool

castrokiller:
very well

castrokiller:
very well

cool

Optimist1998:
Guys let's try this....
A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F. If the stone leaves with a velocity of 40m/s, the value of F is
A. 4.0 x 10²N
B. 2.0 x 10³N
C. 4.0 x 10³N
D. 4.0 x 104N

I noticed there's a gross misconception about this question.

Just worked it now, the answer is C.

1/2 mv^2 = 1/2 F e.

Energy in extending the catapult(1/2 F e) = kinetic energy of the stone (1/2mv^2)

Equate and get F

1.octane number is to petrol as _______ is to diesel 2.________ is formed by passing ethanol vapour over aluminium oxide at 360° 3.what is the product formed by reacting glucose with dilute h2so4 4.glucose is oxidised to_______ by bromine water 5.in the pressence of excess oxidising agents alkanone are oxidised to______

Red blood cell, is it destroyed in the Liver or spleen?

Amethyst101:


Just worked it now, the answer is C.

1/2 mv^2 = 1/2 F e.

Energy in extending the catapult(1/2 F e) = kinetic energy of the stone (1/2mv^2)

Equate and get F

I think its b
1/2mv^2=FD

Substitute and solve nd ull get 2000

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SamanN:
Red blood cell, is it destroyed in the Liver or spleen?

both

SamanN:
Red blood cell, is it destroyed in the Liver or spleen?

Fragile, Damaged and abnormally shaPed RBC are destroyed by the spleen.

ColdSweat:
Fragile, Damaged and abnormally shaPed RBC are destroyed by the spleen.

so ur ans is d spleen?

Please ooo... Who can lecture me on vectors... Help a brother. Whatsapp @07039643875

felix00:
so ur ans is d spleen?

. In the feotus, thats during erythropoesis, the liver helps in RBC formation, though not in adults. So I guess with this spleen should go for the answer. # my point though.

ColdSweat:
. In the feotus, thats during erythropoesis, the liver helps in RBC formation, though not in adults. So I guess with this spleen should go for the answer. # my point though.

no I think the d liver helps in destruction/breakdown of dead RBC.... thats why it get affected when d RBC are attacked by plasmodium becos it has too much work to do in breaking d destroyed RBC down... PS - my thoughts though...they might be wrong

ColdSweat:
Fragile, Damaged and abnormally shaPed RBC are destroyed by the spleen.

you re right RBC re broken down in d spleen but to a laser extent in d liver as well buh in foetus, d liver makes new RBC

I checked various past questions, i checked Pre-degree outlets it's not in order with my note, what would you pick if you were to find it on the hot seat??

Optimist1998:
I'm not sure of my answer. But I know the pituitary is the master gland and the pancreas doesn't stimulate............its just an insulin production site.

Stanley what's the correct answer?

You could be right, biology is a very scary subjects to me with the twists and turns. We have to be sure.

IemFava:
...

thank u

Optimist1998:

Pituitary gland

Recheck the question. It made mention of ORGAN not GLAND. If that's the case, from the options the only organ that has something to do with insulin is the pancreas. Pancreas is the answer.

SamanN:


You could be right, biology is a very scary subjects to me with the twists and turns. We have to be sure.

PItuitary is a Gland not an organ. Pancreas is correct, since the question laid emphasis on Organ.

Optimist1998:
I. Its velocity is constant
II. No work is done on the body
III. It has constant acceleration directed away from the centre
IV. The centripetal force is directed towards the centre

Which combination of the above is true of a body moving with constant speed in a circular track?
A. II and IV
B. I and IV
C. II and III
D. I and III

I & IV is the most correct option

.

felix00:
Biology
70
Chemistry
87
Physics
88
Use of English
73
Total Score:318
Jamb mock result... But could have been better.. I really need to work on my BIO and CHEM

lie Mohammed

Drienzia:
lie Mohammed

I don't care