NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Dhruvik Tandel
Subject: Physics
, asked on 9/3/18
3) Show that magnitude of
A
→
+
B
→
≥
A
→
+
B
→
.
Answer
1
Madhura Mandal
Subject: Physics
, asked on 7/3/18
A motor boat racing north with a velocity of 25 Km/h. Water current in that region is 10 Km/h in a direction 60
0
east of south. Find the resultant velocity of the boat.
Answer
1
Alok Singh
Subject: Physics
, asked on 6/3/18
A particle is thrown over a triangle from one end of a horizontal base that grazing the vertex falls on the other end of the base.If
α
a
n
d
β
b
e
t
h
e
b
a
s
e
a
n
g
l
e
s
a
n
d
θ
i
s
t
h
e
a
n
g
l
e
o
f
p
r
o
j
e
c
t
i
o
n
.
P
r
o
v
e
t
h
a
t
tan
θ
=
tan
α
+
tan
β
Answer
2
Naga Nandhini
Subject: Physics
, asked on 6/3/18
If the splash is heard 4.23 seconds after a stone is dropped into a well 78.4m deep. Find the velocity of sound in air
Answer
1
Amitesh Kumar
Subject: Physics
, asked on 5/3/18
A rifle was aimed at the vertical line on the target located precisely in the northern direction, and then fired. Assuming the air drag to be negligible, find how much off the line, and in what direction, will the bullet hit the target. The shot was fired in the horizontal direction at the latitude ϕ = 60°, the bullet velocity
v
= 900 ms
–1
, and the distance from the target equals s = 1.0 km.
Answer
1
Sunita Sanghvi
Subject: Physics
, asked on 3/3/18
What is integration and how to do it
Answer
2
Rijo
Subject: Physics
, asked on 2/3/18
Find the resultant of the following forces acting at a point 200 2 N along NE,
500 2 N along NW and 800 N along south
Answer
1
Ishika Sahay
Subject: Physics
, asked on 28/2/18
State law of parallelogram of vector addition, show that the magnitude of resultant R
of two vectors P
and Q
inclined at an angle A is R
= (P
2
+Q
2
+2PQcosA)
1/2
Answer
1
Ian Colaco
Subject: Physics
, asked on 27/2/18
Calculate the radius of the orbit of the artificial satellite if it is always above a certain place on the earths surface mean radius of earth is 6400km and g=9.8ms^-2
Answer
1
Shreya Choudhary
Subject: Physics
, asked on 26/2/18
The value of cos30 is root3/2 but in the soln it is taken as 1/2:
Q. 2 60
o
respectively, find the resultant.
Answer
1
Alok Singh
Subject: Physics
, asked on 21/2/18
Please solve this i need answer of this today itself.
Answer
1
Bhavika
Subject: Physics
, asked on 20/2/18
find angular velocity of a (A) hand of a clock (B) second hand of a clock (C) of earth about its own axis
Answer
1
Bhavika
Subject: Physics
, asked on 20/2/18
the diagonal of a parallelogram are represented by or R1= 3i + 2j - 7 k and R2= equal to 55I+6J-3K. Find the area of parallelogram
Answer
2
Chhavi Tomer
Subject: Physics
, asked on 17/2/18
Three concurrent forces P, Q, R acting on an object, as shown, keep it in equilibrium. Write the expression for R in terms of P.
Answer
1
Chhavi Tomer
Subject: Physics
, asked on 17/2/18
Please answer this
Answer
1
Prev
3
4
5
6
7
Next
What are you looking for?
500 2 N along NW and 800 N along south
Q. 2 60o respectively, find the resultant.