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Shashwat Pratap Singh
Subject: Physics
, asked on 28/4/18
A layer of oil with density 724 kg/m^3 floats on water of density 1000 kg/m^3. A block floats at the oil-water interface with 1/6 of its volume in oil and 5/6 of its volume in water, as shown in the figure. What is the density of the block?
Answer
1
Gagans Vipassana
Subject: Physics
, asked on 28/4/18
Two charges -q and +q are located at points A(0,0,-a) and B (0,0,+a) respectively. How much work is done in moving a test charge from point p(7,0,0) to q (-3,0,0)
Answer
1
Avinash R
Subject: Physics
, asked on 26/4/18
?ABCD is a square of side 5 m. Charge of 50C, -50C and 50C are placed at A, C and D respectively. Find the resultant electric field at B.pls give the diagram also.
Answer
1
Avinash R
Subject: Physics
, asked on 24/4/18
In example 77 why V2 is zero? Pls tell me today.its urgent. Example 77. A capacitor of capacitance 6
μ
F is charged to a potential of 150 V. Its potential falls to 90 V, when another capacitor is connected to it. Find the capacitance of the second capacitor and the amount of energy lost due to the connection. Given here C1 = 6 , V1 = 150 , V2 = 0 , V = 90, C2 = ?
Answer
1
Avinash R
Subject: Physics
, asked on 24/4/18
a 800pF capacitor is charged by a 100V battery. after some time the battery is disconnected. the capicitor is then connected to another 800pF capacitor. find electroststic energy stored .pls tell why V2 is zero? Don't give me the link.but pls tell why V2 is zero?
Answer
1
Avinash R
Subject: Physics
, asked on 24/4/18
a capacitor of capacitance 6 microfarad is charged to a potential of 150V. It's potential falls to 90V,when another capacitor is connected to it..find the capacitance of the second capacitor and the amount of energy lost due to the connection. Why V2 is zero?pls explain.
Answer
1
Aparna Sahu
Subject: Physics
, asked on 24/4/18
Solve this:
Q.52. The time (t) and displacement (x) are related as
t
=
a
x
2
+
b
x
. What is the acceleration of the particle at the origin of the coordinate axes ?
(a)
-
2
a
b
3
(b) - 2 ab
(c)
-
2
a
/
b
3
(d) - 2 a / b
Answer
1
Siraj
Subject: Physics
, asked on 23/4/18
A 900 pF capacitor is charged by 100 volt supply. The capacitor is disconnected from the battery and is is connected to another 900pF capacitor . What is the electrostatic energy lost by the system? please expert answer the answers given i was not able to understand
Answer
2
Avinash R
Subject: Physics
, asked on 23/4/18
Why C2 forms series combination and C3 forms parallel combination when multiple dielectric slab is inserted?how to identify series and parallel combination when multiple dielectric is inserted?pls explain.
Answer
1
Lavneesh Rajput
Subject: Physics
, asked on 23/4/18
Solve this:
Q.22. The equation of a transverse wave is given by the relation
y = 100 sin
π
(0.04 z - 2t), where y and z are in cm and t is in seconds. The frequency of this wave is
(a) 1 Hz
(b) 4 Hz
(c) 25 Hz
(d) 100 Hz.
Answer
2
Lavneesh Rajput
Subject: Physics
, asked on 23/4/18
Solve this:
Q.38. The de-Broglie wavelength L associated with an elementary particle of linear momentum p is best represented by the graph
(a)
(b)
(c)
(d)
Answer
1
Aparna Sahu
Subject: Physics
, asked on 22/4/18
Solve this:
Q64. The resultant force on the current loop PQRS due to a long current carrying conductor will be
(a) 10
-4
N
(b) 3.6
×
10
-4
N
(c) 1.8
×
10
-4
N
(d) 5
×
10
-4
N
Answer
1
Tulsi Mehta
Subject: Physics
, asked on 20/4/18
Find force on q. Given q=1.6 x 10^-10 C
Answer
1
Suriya Devalan A R
Subject: Physics
, asked on 20/4/18
What is the self potential of disk?
Answer
1
Vaishnavi
Subject: Physics
, asked on 19/4/18
Solve this:
4. Two connected bodies having respective capacitances C
1
and C
2
are charged with a total charge Q. The potentials of the two bodies are.
1
Q
C
1
+
C
2
,
Q
C
1
+
C
2
2
Q
C
1
+
Q
C
2
,
Q
C
1
+
Q
C
2
3
C
1
C
2
C
1
+
C
2
,
C
1
C
2
C
1
-
C
2
4
Q
C
1
-
Q
C
2
Q
C
1
-
C
2
Answer
1
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What are you looking for?
Q.52. The time (t) and displacement (x) are related as . What is the acceleration of the particle at the origin of the coordinate axes ?
(a)
(b) - 2 ab
(c)
(d) - 2 a / b
Q.22. The equation of a transverse wave is given by the relation
y = 100 sin (0.04 z - 2t), where y and z are in cm and t is in seconds. The frequency of this wave is
(a) 1 Hz
(b) 4 Hz
(c) 25 Hz
(d) 100 Hz.
Q.38. The de-Broglie wavelength L associated with an elementary particle of linear momentum p is best represented by the graph
(a)
(b)
(c)
(d)
Q64. The resultant force on the current loop PQRS due to a long current carrying conductor will be
(a) 10-4 N
(b) 3.6 10-4 N
(c) 1.8 10-4 N
(d) 5 10-4 N
4. Two connected bodies having respective capacitances C1 and C2 are charged with a total charge Q. The potentials of the two bodies are.