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Subject: Science, asked on 26/12/17

11Q

​Q11. Study the given graph and answer the following questions

         (i) Which part of the graph shows accelerated motion ?

        (ii) Which part of the graph shows retarded motion ?

        (iii) Calculate the distance travelled by the body in first 4 seconds of journey graphically.

                

Subject: Science, asked on 21/12/17

Solve this:

48. An elevator starts from rest with a constant upward acceleration. It moves 2 m in the first 0.6 s.  A passenger in the elevator is holding a 3 kg package by a vertical string. The tension in the string during acceleration is  (Take g = 9.8 m/s2 )

(A) 60.7 N                                       (B) 61.7 N                 
(C) 62.7 N                                       (D) 63.0 N 

Subject: Science, asked on 19/12/17

What is Conservation of Linear Momentum

Subject: Science, asked on 16/12/17

Solve this:

​Q66. In the given figure if F =30 N. the acceleration of both the blocks is 1 m/s2. The frictional force between m1 ground is K times of 10 N. Find 'K'.

             
 

Subject: Science, asked on 4/12/17

Solve this:

Subject: Science, asked on 27/11/17

a man of mass 70 kg is standing on a bus which is moving at a speed of 70 km per Hr. At one point of his journey he jumps upwards to a height of 30 cm. where does he land his feet on the floor of the bus again?

Subject: Science, asked on 21/11/17

A stone is dropped from the top of 40m high tower. Calculate it's stopped after two second. Also find the speed with which the stone strikes the ground?
Don't give me unusual links!!!

Subject: Science, asked on 21/11/17

Q. Find acceleration and contact force between two bodies. 


FAB = 100 NmA = 20 gramsmB = 30 grams
 

Subject: Science, asked on 20/11/17

If a bullet of same mass is fired form a heavier rifle and one more bullet from a lighter rifle which rifle will hurt the shooter more and recoil more?

Subject: Science, asked on 12/11/17

19. Three blocks A, B and C of masses 10 kg, 3 kg, and 5 kg respectively are connected by a light inextensible smooth horizontal plane. If a force of 36 N is applied to the string connected to C.​19. Three blocks A, B and C of masses 10 kg, 3 kg, and 5 kg respectively are connected by a light inextensible smooth horizontal plane. If a force of 36 N is applied to the string connected to C. The ratio of T2 and T1 is? 19.  Three blocks A, B and C of masses 10 kg, 3 kg, and 5 kg respectively are connected by a light inextensible smooth horizontal plane. If a force of 36 N is applied to the string connected to C.

Subject: Science, asked on 11/11/17

Pl sole q48. Dont give plain ans like before give step by step explanation and show the formula or concept used in the step. And pl dont give any links

Subject: Science, asked on 9/11/17

Solve q48

Subject: Science, asked on 9/11/17

Solve q49 in the below image with detailed explanation

Subject: Science, asked on 7/11/17

Solve this:
Q).  Write the correct figure in the given box.
A cart with mass 30 kg. went 40 m. in a straight line on a plain and smooth road when a force of 3 N was applied to it. How much work was done by the force ?
W = 3 × ____
W = _____ J

Subject: Science, asked on 4/11/17

Solve q46 and give detailed explanation

​Q46. An object of mass 20 kg moves along a straight line on a smooth horizontal surface. A force F acts on the object in its direction of motion. A graph of force against time is shown here. What is the velocity of the object at t = 6 s if its velocity at  t = 4 s is 4 m s–1 ?
           
        A. 3.5 m s–1

        B.​ 4.5 m s–1

       C. ​3.5 m s–1

       D. 6.2​m s–1
 

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