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Aparna Sahu
Subject: Physics
, asked on 19/1/18
Calculate the RMS velocity of molecules of a gas of which the ratio of two specific heats is 1.42 and velocity of sound in the gas is 500 m/s
727 m/s
527 m/s
927 m/s
750 m/s
Answer
1
Sofiya Parihar
Subject: Physics
, asked on 19/1/18
Answer the second ,third and fourth part of question no.28
Answer
1
Aparna Sahu
Subject: Physics
, asked on 18/1/18
Solve this:
At a certain temperature, hydrogen molecules have r.m.s velocity of 3 km/s, what is the r.m.s velocity of the oxygen molecules at the same temperature ?
a. 0.25 km/s
b. 0.5 km/s
c. 0.75 km/s
d. 6 km/s
Answer
2
Aparna Sahu
Subject: Physics
, asked on 18/1/18
Solve this.
Q). Air trapped inside a single-piston-cylinder exerts a pressure of 760 mmHg. If its volume is increased at a constant temperature such that final pressure is equal to 543 mmHg then increase in volume is equal to
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Answer
1
Aparna Sahu
Subject: Physics
, asked on 18/1/18
Solve this:
In an aquarium, air bubble at bottom has a volume = 0.5 mm
3
. What would be the size of the bubble at the top if height of water level is = 1m. (density of water = 1000 kg/m
3
, atmospheric pressure = 1 * 105 Pa, gravitational acceleration = 10 m/s
2
)
(a) 0.5 mm
3
(b) 0.55 mm
2
(c) 0.6 mm
3
(d) 0.65 mm
3
Answer
1
Aparna Sahu
Subject: Physics
, asked on 18/1/18
Solve this.
Q). Air trapped inside a single-piston-cylinder exerts a pressure of 760 mmHg. If its volume is increased by 30 percent at a constant temperature, then pressure exerted would be equal to
A. 533 mmHg
B. 544 mmHg
C. 584 mmHg
D. 633 mmHg
Answer
1
Aparna Sahu
Subject: Physics
, asked on 18/1/18
Solve this
.
While going through a heap of junk in her garage, Jackie found an uncalibrated mercury thermometer. After a few experiments, she succeeded in calibrating it. Her notes show that ice point of thermometer corresponds to 3 cm while steam point corresponds to 30 cm of mercury. If Jackie's calculations are fine then length = 15 cm would correspond to :
A. 46
o
C
B. 44
o
C
C. 42
o
C
D. 40
o
C
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 15/1/18
Q. The dimension of a magnet is 10 cm x 2 cm x l cm. If its magnetic momentum is 1.0 A
m
2
. What is the intensity of magnetization?
Answer
1
Dipesh Malhotra
Subject: Physics
, asked on 12/1/18
What is an electromagnet and what is meant by the term electromagmetism ? Is it a property or what? Pls explain!!
Answer
1
Suroj Dey
Subject: Physics
, asked on 12/1/18
Is the answer 3) plz solve it
9. A conducting rod with resistance r per unit length is moving inside a vertical magnetic field
B
→
at constant speed v on two horizontal parallel ideal conductor rails. The ends of the rails are connected to a resistor R. The separation between the rails is d. The rod maintains a tilted angle
θ
to the rails. Find the external force required to keep the rod moving.
1
F
=
B
2
d
2
v
R
+
d
r
2
F
=
B
2
d
2
v
R
+
d
r
/
sin
θ
(
3
)
F
=
B
2
d
2
v
/
sin
θ
R
+
d
r
/
sin
θ
(
4
)
F
=
B
2
d
2
v
/
cos
2
θ
R
+
d
r
/
cos
θ
Answer
1
Chaitanya Kapoor
Subject: Physics
, asked on 11/1/18
4th.ques.please solve
Answer
1
Prerna Varshney
Subject: Physics
, asked on 10/1/18
An inductor L of inductance XL
is connected in series with a bulb B and an ac source.
How would brightness of the bulb change when a capacitor of reactance
XC
= XL
is inserted in series in the circuit. Justify your answer in each case.
Answer
1
Sofiya Parihar
Subject: Physics
, asked on 9/1/18
Write the dimensions of mutual inductance
Answer
2
Sofiya Parihar
Subject: Physics
, asked on 9/1/18
Explain faradays second law of electromagnetic induction
Answer
1
Dipesh Malhotra
Subject: Physics
, asked on 9/1/18
How can Self inductance of a coil be increased ?
Answer
2
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Next
What are you looking for?
727 m/s
527 m/s
927 m/s
750 m/s
At a certain temperature, hydrogen molecules have r.m.s velocity of 3 km/s, what is the r.m.s velocity of the oxygen molecules at the same temperature ?
a. 0.25 km/s
b. 0.5 km/s
c. 0.75 km/s
d. 6 km/s
Q). Air trapped inside a single-piston-cylinder exerts a pressure of 760 mmHg. If its volume is increased at a constant temperature such that final pressure is equal to 543 mmHg then increase in volume is equal to
A. 0.2
B. 0.3
C. 0.4
D. 0.5
In an aquarium, air bubble at bottom has a volume = 0.5 mm3. What would be the size of the bubble at the top if height of water level is = 1m. (density of water = 1000 kg/m3, atmospheric pressure = 1 * 105 Pa, gravitational acceleration = 10 m/s2)
(a) 0.5 mm3
(b) 0.55 mm2
(c) 0.6 mm3
(d) 0.65 mm3
Q). Air trapped inside a single-piston-cylinder exerts a pressure of 760 mmHg. If its volume is increased by 30 percent at a constant temperature, then pressure exerted would be equal to
A. 533 mmHg
B. 544 mmHg
C. 584 mmHg
D. 633 mmHg
While going through a heap of junk in her garage, Jackie found an uncalibrated mercury thermometer. After a few experiments, she succeeded in calibrating it. Her notes show that ice point of thermometer corresponds to 3 cm while steam point corresponds to 30 cm of mercury. If Jackie's calculations are fine then length = 15 cm would correspond to :
A. 46oC
B. 44oC
C. 42oC
D. 40oC
Q. The dimension of a magnet is 10 cm x 2 cm x l cm. If its magnetic momentum is 1.0 A. What is the intensity of magnetization?
9. A conducting rod with resistance r per unit length is moving inside a vertical magnetic field at constant speed v on two horizontal parallel ideal conductor rails. The ends of the rails are connected to a resistor R. The separation between the rails is d. The rod maintains a tilted angle to the rails. Find the external force required to keep the rod moving.
is connected in series with a bulb B and an ac source.
How would brightness of the bulb change when a capacitor of reactance
XC
= XL
is inserted in series in the circuit. Justify your answer in each case.