Severus Snape

A man of mass 85 kg stands on a lift of mass 30 kg.When he pulls the rope,he exert a force of 400N on the floor of the lift.Calculate accelaration of lift.

The potential energy of 1 kg particle free to movie along x axis is give by v(x)=[(x^4)/4-(x^2)/2]J.The total mechanical energy of the particle is 2J.Calculate the maximum speed.

if we remove the atmosphere of earth,then the duration of day will-

a)increase

b)decrease

Cooking gas containers are kept in truck moving with uniform speed.The temperature of gas molecules inside will

a)increase

b)decrease c)remains same.

A man(60 kg) and his daughter(20 kg) are both at rest on a frictionless ice pond.The father lifts a 1 kg ball and throws it to his daughter with horizontal speed 5 m/s;the daughter catches it.The speeds of father and daughter are:-

ans:-(1/12)m/s;and (5/21)m/s

A boy is standing at the centre of a boat which is free to move on water. Distance of the boy from the shore is 100 m. If the mass of boy and boat are 40Kg and 60 Kg respectively and boy moves with a velocity 1m/sec towards to shore, what is the distance of the body from the shore at the end of the 5th second:

a) 97m

b) 95m

c) 93m

d) 100m

e) 90m

Tell the correct answer. Antibiotics inhibit growth of:-

a) bacteria only

b) bacteria and fungi

c) Bacteria, fungi, virus

d) none of the above

Please explain also

What is the shape of it? like cylinder, triangle like that... PLEASE HELP

Guys please help me!! I am seriously confused between composed and decomposed..

Hey friend I am a doing a Presentation in Sanskrit... I tried searching in Internet.. but I cannot find any software.. so please tell me a good English to Sanskrit Translation....THANKS! ( P.S: It should be a good software )

Please help me with this sum.. I have my exams coming up tomorrow....

A car travels 130 km in 2 1/2 hours ( two and a half hours). Find the distance travelled in 3 hrs.

I got the answer.. It is 156 km.. But my doubt is how do you check it whether is right or wrong? PLEASE

Please help me with these maths problems.. PLEASE SHOW ME THE METHOD PROPERLY..Remember I am in 6th grade.. These problems are related to Ratio and Proportion

1) A carpenter earns Rs. 2975 in a week. How many days does he have to work to earn Rs. 8500

2) The cost of 8 kg rice is Rs. 444. What quantity of rice can be purchased with Rs. 1776

3) A machine produces 24 screws in 5 minutes. How long will it take to produce 10000 screws?

4) A car travels 130 km in 2 1/2 hours ( Two and a half hours )

a) Find the time required to travel 240 km

b) Find the distance travelled in 3 hours

5) It takes 3 hours for a tailor to stitch 2 pairs of uniform. How long does it take to stitch 12 pairs of uniform.

6) A car travels 80 km in 2 1/2 hours ( Two and half hours ) Find the distance travelled in 6 hours

So I have some doubts, please help me to solve these problems.. Remember I am in 6TH Grade ( Indian) These problems are related to "Ratio and Proportion"

1) Sandeep pays Rs. 5200 as rent for four months in a lodge for a room. How much does he have to pay for 2 and 1/2 years ( Two and a half years )

2) The cost of 5 bottles of Mineral Water is Rs.70. How much should one pay to buy 12 crates of 24 mineral water bottles each?

3)Kavya bought 3 Lunch Boxes at Rs. 525. Raj bought 4 boxes at Rs. 540. Find out who got the lunch boxes for a cheaper price.

4) Sarvesh made 45 Runs in 9 overs and Abhishek made 32 runs in 8 overs. Who made more runs per over?

5) It takes 3 hours for a tailor to stitch 2 pairs of uniform. How long does it take to stitch 12 pairs of uniform?

PLEASE HELP :( I AM DESPERATE... YOUR HELP WILL BE APPRECIATED

Okay my download speed used to be some 3.30 Mbps.. but now it has decreased to 0.69 Mpbs!!! I have bsnl modem ( hardware connection ).... Please :'(

You see, earlier the download speed was 3.39 mbps but then now it came to 0.79 mbps!! But my internet is perfectly fine?? Please help??

Friends please help me!! See, i was racing until 5th blacklist... Then I removed the CD simply.. ... So then I put it back again..and then everything went!!! I have to start from the beggining! :( PLEASE HELP... I AM BEGGING YOU.. PLEASE!!!