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CBSE Class 11-science Answered

a man wishes to cross a river of width 120m by a motor boat. his rowing speed in still water is 3m/s and his maximum waking speed is 1m/s. the river flows with velocity 4m/s.
Asked by susmita bhattacharjee | 01 Jun, 2013, 09:47: PM
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Answered by | 25 Jun, 2013, 11:10: AM
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CBSE 11-science - Physics
What do your understatnd by (1)position vector and (ii) displancment vector. Distinguish them with illustration.
Asked by rk274268 | 05 Aug, 2022, 01:19: PM
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CBSE 11-science - Physics
what is dot product
Asked by Kattaithihaas | 24 Jul, 2022, 01:23: PM
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CBSE 11-science - Physics
a boat's speed in still water is 20km/h .if the boat is to travel directly across a river whose current has a speed of 12km/h ,at what upstream angle must the boat head?
Asked by pawankumardas15492 | 22 Jul, 2022, 10:24: PM
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CBSE 11-science - Physics
A baseball is hit by a bat and given a velocity of 40.0m/s at an angle of 30 degree above the horizontal. The height of the ball above the ground upon impact with the bat is 1.0 m  a) what maximum height above the ground does the wall reached b) a feilder is 110.0 m from home plate with the ball is hit and the balls trajectory is directly at home if he begins running at the moment the ball is hit and catches the ball. when it is still 3.0 m above the ground. How long does he run before catching the ball. C) how fast does he have to run in order to catch the ball
Asked by lonese3325 | 12 Jun, 2022, 01:42: PM
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CBSE 11-science - Physics
A particle is located at 5i^ +6j^ + 7k^ at t=0.. After 5 seconds, it is located at 2i^+5j^ +5k^. The magnitude of displacement of  the particle in XY plane is: ???
Asked by nutankumari95074 | 11 Jun, 2022, 05:24: PM
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CBSE 11-science - Physics
if |A|=|B|=|A-B|, then find the angle b/w the two vectors
Asked by kaziryan.05 | 13 Apr, 2022, 09:01: PM
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CBSE 11-science - Physics
how to find component of vector ?
Asked by aditya000ghoderao | 19 Jan, 2022, 05:05: AM
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CBSE 11-science - Physics
A particle of mass m is given speed u at angle theta at topmost point It breaks into two equal parts one comes to rest  find point of landing of second mass
Asked by ashishgarud539 | 15 Dec, 2021, 04:12: PM
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CBSE 11-science - Physics
Find the resultant and the direction of resultant of two vectors A and B with angle straight theta between them
Asked by neerajchauhan000000 | 23 Sep, 2021, 03:33: PM
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CBSE 11-science - Physics
a body is projected with speed 40root2 m/s downwards an angle of 45 degree from vertical if h=100 m find 1. time of flight 2. range
Asked by sohail.saba0311 | 09 Sep, 2021, 08:23: PM
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