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Which is a characteristic of simple machines?
class5
asked
May 29, 2020
by
azlaan.7151
1
answer
Picture question - class 12 - chemistry
chemistry
class12
asked
May 29, 2020
by
satpalbhati.lic
0
answers
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
Picture question - class 12 - physics
physics
class12
asked
May 29, 2020
by
cavafo8448
1
answer
(chatquestion)...(i) Names of two complexes which are used in treatments. (ii) Double salt is different from a complex.
other
telegram-2046
asked
May 29, 2020
by
balaji.thirumalai
1
answer
Picture question - class 12 - chemistry
chemistry
class12
asked
May 29, 2020
by
sahil.tony2008
0
answers
(chatquestion)...Q. Explain why a ray of light passing through the centre of curvature of concave minor gets reflected along the same path.
other
telegram-2043
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...- A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted? NC
other
telegram-2040
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...> Amniecenteris one eur country da this ban neceseany 2 Comment. sox determinaton i Bahned in
other
telegram-2036
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...0 Mention the Assested Refera ductiod Technolyn, LART) programme pacimaty aim ol
other
telegram-2030
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...80 Let I >I, and J, = %3D x+1 dr, J = J, %3D x+1 where x> 0. T=1 (A) In = fx In ada (B) I= f In(x+ 1)dx %3D (C) J= f In ( a dx x+1 (D) I-J= x Inx- x+c where c be the integral constant
other
telegram-2027
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A conducting spherical hollow shell of inner radius r, and outer radius r, with uniform charge densities o and -o respectively. Then, the charge inside the cavity is (1) Zero (2) 4ro (r,² – r,?) (3 ) -4πστ2 (4) 4tor,?
other
telegram-2024
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...1. The opposite corners of a square carry Q charge each and the other two opposite corners of the same square carry q charge each. If the resultant force on q is zero, how are Q and q related?
other
telegram-2018
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...43 Which of the following is incorrectly matched : CH, CH, H- (1) H- -HO- and HO H- are Identical -H -HO- но- CH, CH, CH, CH, H- (2) H- -H- are H- Br Br and CI- CH; CH: enantiomers (3) is a meso compound ÇOOH COOH H- -Br -Br (4) and are Br- -H H- Br COOH COOH diastereomers
other
telegram-2013
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A cdain f length e< I8 u placed na dynoo t6 Aulace wheseme poeit i haigantal d eme pat in en quasde. cioACular of sradiue R im the vertical plane. as hron Imitiall the whole pasit of chain liee in the circulay pasut with one end at topme paint of circular Auface 9the man Gt choun m. slowey the whole chain on hostzontal pauet Then work Bequired to pull vey sing 2. mge²re
other
telegram-2011
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Attempt Questions View Explanation Difficulty Level Q147: Doubts The correct stability order of following species is : (z) (w) (x) (y) (1) x > Y > w > Z (2) y > x > w > z (3) x > W > Z > y (4) z > X > y > W
other
telegram-2007
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...70, An spherical vessel of material of conductivity k, inner and outer radii r, and r2 contains a liquid, maintained at temperature T1. The outside temperature is T2 (T2<T¡), the rate of heat loss is- (T-T2) (12 -1) (T-T2) (r2 - ) (T-T2) (1, - ) (T;-T2 ) (12 -1 ) (1) k.G12 (2) 2k.T.12 (3) 4k.T.I2 (4) 8k.T.12
other
telegram-2005
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...69.A thin vessel of inner radius r and length L is used to boil a liquid. There is a heater coil inside the vessel and it maintains uniform temperature T1. Temperature of surrounding is T2(<T¡). To prevent heat loss, the cylinder is wrapped in insulator of thermal conductivity k and thickness h. Rate of heat loss from the curved surface, is- 2TurkL 2tr k (1) (T-T,) (2) (T,-T,) h.L 2nrkL (3) In(1+h/r) 2tkL (L-L)- (T-T,) (4) In(h/r)
other
telegram-2003
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...66.The radius of cross section of a conductor decreases linearly from one end to the other. The temperature of the two ends is 2T and T respectively. The temperature of the mid-point is- 3T (1) less than 3T (2) equal to 3 T (3) greater than 2 (4) can not be concluded
other
telegram-2001
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Question 8- Express the given matrix as the sum of a symmetric and a skew-symmetric matrix. [2 3 17 1 2 4 1 2 T
other
telegram-1998
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...6. Calculate the pressure needed to prevent osmosis when 10.0 g CaCl2 is added to 100 mL of water?
other
telegram-1995
asked
May 29, 2020
by
balaji.thirumalai
1
answer
A charged metallic bob of mass m and charge Q is in equilibrium in presence
physics
class12
asked
May 29, 2020
by
anchitshah99
1
answer
(chatquestion)...2. Which ion would you expect to be more heavily hydrated? 1. K', Са2+ 2. Na*, K* 3. Cu2*, Cu* +.
other
telegram-1991
asked
May 29, 2020
by
balaji.thirumalai
1
answer
Hair contains keratin protein which is also present in nails and wool is an
chemistry
class9
asked
May 29, 2020
by
syedzahid717
1
answer
(chatquestion)...A Consider A ACB, right-angled at C, in which AB = 29 units, BC = 21 units and Z ABC = 0 %3D (see Fig. 8.10). Determine the values of 29 (i) cos? 0 + sin² 0, (ii) cos? 0 – sin 0. B 21 Fig. 8.10
other
telegram-1988
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...O- Which tegim of the AP:21, 18,15,.. is -81? Al so, is teim 0? 6Give eason for your any answert.
other
telegram-1985
asked
May 29, 2020
by
balaji.thirumalai
1
answer
Predict the product of the following reactions
chemistry
class12
asked
May 29, 2020
by
dhaminder.444
1
answer
molar heat of vaporisation of water at 100 degree C is 40.585 KJ/mol. At wh
chemistry
class12
asked
May 29, 2020
by
avneetvirk80
1
answer
(chatquestion)...SLA7 (n) 11. In Figure 1-Q4, the current through the resistor AB is 30 A 60 B. 42 Fig. 1-04 (a) 0.5 A (c) 0.167 A (b) 0.67 A (d) 0
other
telegram-1978
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...awhen a stale and Connected in sedies to the batby emf 3v through gulvanometer having 30 divin l00 resistahce is a desistance 2hows fult Scale defection find the figure meh't t of the galvoromees se micooampere.
other
telegram-1974
asked
May 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Differentiate between molality and molarity of a solution. What is the effect of change in temperature of a solution on its molality and molarity?
other
telegram-1972
asked
May 29, 2020
by
balaji.thirumalai
1
answer
Which of the correct ratio of chest compressions to rescue breaths for use
biology
noclass
asked
May 28, 2020
by
oseiprempeh939
1
answer
(chatquestion)...by the mudual farce d electorostatic re pulsion? 4 the chaage Ahb radi A and B are hegligible Compared Dto the dei tance 61) Twd insulted charged copper Sphenes A.and B have their Centres separated distance fdenstatic repulsions ol So cm. what ů a on "each is 6is X107c and i) what in the force each Sphode is chagedl above them is halved ? y defulsion double the dis tance bluw amount and the
other
telegram-1969
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...27. In an a.c. circuit, the instantaneous e.m.f. and current are given bye = 100 sin 30 t i-20sin 30t - In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively: 50 (1) .0 (2) 50, 0 (3) 50, 10 1000 10 (4)
other
telegram-1965
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...25. The density of a material in the shape of a cube is determines by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 19%, the maximum error in determining the density is: (1) 2.5% (2) 3.5% (3) 4.5% (4) 6%
other
telegram-1961
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...21. A silver atom in a solid oscillates in simple harmonic motion in some direction with a frequency of 10/sec. What is the force constant of the bonds connecting one atom with the other ? (Mole wt. of silver = 108 and Avagadro number 6.02 x 10 gm mole) (1) 2.2 N/m (2) 5.5 N/m (3) 6.4 N/m (4) 7.1 N/m
other
telegram-1958
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...20. The angular width of the central maximum in a single slit diffraction pattern is 60°. The width of the slit is 1 um. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it, Young's fringes can be observed on a screen placed at a distance of 50 cm from the slits. If the observed fringe width is 1 cm, what is slit separation distance ? (Le. distance between the centres of each slit.) (1) 75yum (2) 100um (3) 25µm (4) 50 um
other
telegram-1956
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...15. A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7x10 kg/m and its young's modulus is 9.27×10"Pa. What will be the fundamental frequency of the longitudinal vibrations ? (1) 10 kHz (2) 7.5 kHz (3) 5 kHz (4) 2.5 kHz
other
telegram-1951
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...12. A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20 V. If a dielectric material constant K = is inserted between the plates, the magnitude of the 3 induced charge will be : (1) 2.4 nC (2) 0.9 nC (3) 1.2 nC (4) 0.3 nC
other
telegram-1946
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...10. The reading of the ammeter for a silicon diode in the given circuit is : (1) 11.5 mA (2) 13.5 mA (3) 0 (4) 15 mA
other
telegram-1943
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...2. The mass of a hydrogen molecule is 3.32x10 kg. If 10ª hydrogen molecules strike, per second, a fixed wall of area 2 cm at an angle of 45° to the normal, and rebound elastically with a speed of 10' mis, then the pressure on the wall is nearly: (1) 2.35×10° N/m 2) 4.70×10° N/m² 3) 2.35x10'N/m² 4) 4.70x10'N/m² at a
other
telegram-1935
asked
May 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...90. According to molecular orbital theory, which of the following will not be a viable molecule ? (1) H; (2) H? (3) H (4) Hes
other
telegram-1933
asked
May 28, 2020
by
balaji.thirumalai
1
answer
An acid dissociates in water to produce hydrogen ions was first proposed b
chemistry
noclass
asked
May 28, 2020
by
nisiniki890
1
answer
(chatquestion)...1. A capacitor made of two parallel plates each of the plate A and separation d, is being charged by an external sinusoidal time varying source. Show that, the displacement current inside the capacitor is the same as the current charging the capacitor.
other
telegram-1931
asked
May 28, 2020
by
balaji.thirumalai
1
answer
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