Related Questions

If a man cycles at 10 km/hr, then he arrives at a certain place at 1 pm. If he cycles at 15 km/hr, he will arrive at the same place at 11 am. At what speed must he cycles to get there at noon?
A 11 km/hr
B 12 km / hr
C 13 km / hr
D 14 km / hr
Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?
A Sphere
B Cube
C Cylinder (L/D = 1)
D Raschig rings
0.50 kg ভরের একটি কণা X অক্ষ বরাবর x(t)= -13.00+2.00t+4.00t2-3.00t3 সমীকরণ অনুযায়ী চলছে, যেখানে x এর একক মিটার এবং এর একক সেকেন্ড। t=2.0. s - 4 কণার ওপর লব্ধি বল কত? (A 0.50 kg particle moves along the X axis according to x(t)= -13.00+2.00t+4.00t2-3.00t3where x is in meters and t in seconds. What is the net force acting on the particle at t = 2 s?)
A -28 N
B -14 N
C 8 N
D 36 N
If a man cycles at 10 km/hr , then he arrives at a certain place at 1 pm . If he cycles at 15km/hr, arrive at the same place at 11am . At what speed must he cycels to get there at noon ?
A 11km/hr
B 12km/hr
C 13km/hr
D 14km/hr
Randomized quick sort is an extension of quicksort where the pivot is chosen randomly. what is the worst case complexity of sorting a numbers using randomized quick sort?
A O (n)
B O (n2)
C O (n log n)
D O (n!)
The line traced by a single fluid particle as it moves over a period of time is called __________ line.
A Stream
B Path
C Equipotential
D None of these
The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as
A Conduction
B Free convection
C Forced convection
D Radiation
The distance between two stations, Dhaka and Chittagong is 450 km. A train starts at 5 pm from Dhaka and moves towards chittagong at an average speed of 60 km/hr. Another train starts from Chittagong at 4:20 pm and moves towards Dhaka at an average speed of 80 km/hr. At what time will the two trains meet?
A 6:10 pm
B 7:05 pm
C 8:15 pm
D 6: 35 pm
A truck moves at the speed of 90 km/hr after repairing and moves at the speed of 80 km/hr before repairing. It covers x distance in 8 hours after repairing. How much time (in hours) will it take to cover 4x distance before repairing?
A 48
B 40
C 36
D 28
কোনো কণা P(2,3,5) বিন্দু থেকে Q(3,4,5) বিন্দুতে স্থানান্তরিত হলে এর সরণ ভেক্টর কী হবে? (What will be the displacement vector of a particle that moves from point P(2,3,5) to Q(3,4,5)?
A 5i^ + 7j^ + 9k^
B 6i^ + 12j^ + 25k^
C i^ + j^
D i^ + j^ + k^

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