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the component of a in the direction of B is given by

= A.B/|B|.

so A.B = 2*1+3*3 = 11and |B| = √1+3² = √10 so the value is = 11/√10

Vector A such that :β = 300θ =750and R = 15

As the resultant R makes an angle ​β with the direction of vector A.Hence, tan ​β = tan 300 = Solving, we get :A = 1.41 B .........(1)and resultant is given by :R = Putting R = 15, A = 1.41 B and θ = 750 in above equation, we get :B = 7.81 Substituting value of B in eq. 1, we get :A = 11.01

since angle between x and y axis is 90

so, component of F along x will be Fcos(90) = 0

It states that for a fixedmass of a gas at constant pressure, volumeof a gas increases on increasing temperatureand decreases on cooling. Mathematically,

V/T = k

what's the ques bro?

i hope the answer is" A" becuase its towards B and component of A

female reproductive system consists of two ovaries fallopian tubes or oviducts and a uterus.every month and one of the two ovaries releases an egg. this egg is absorbed by the fallopian tube and travels towards the uterusthe lining of the uterus becomes thick in order to accommodate the egg so that it does not slip and is fertilized.if the egg is fertilized then it will 68 itself on the lining of the uterus where it will multiply and form a foetus.the male reproductive system consists of two testes, sperm duct and a penis.sperms are found in the testes and travel towards the penis via sperm duct.

thanks you

A is magnesium and B is oxygen...if they combine together , the product will be magnesium oxide.

MgO ( valency of both elements is 2, )the bond is ionic

In dielectric solids the atoms or molecules experience not only the external applied electric field but also the electric field produced by the dipoles. The resultant electric field acting on the atoms or molecules of dielectric substance is called the local field or an internal field.

V1 = 20.15 KT1 = 299.25 KT3 = 277. 15

From Charle’s LawV1T2 = V2T1We get,V2 = 20.15*277.15/299.25V2 = 18. 625 litres

Below are some of the most common electrical hazards found in homes and how to remove these risks.

Outdated or Poor Wiring. ...

Leaving Appliances Plugged-in Near Water Sources. ...

Wrong Wattage Light Bulbs. ...

Overloaded Power Strips and Outlets. ...

Unprotected Electrical Outlets. ...

Improper Use of Extension Cords.

thnx

extremely small.... according to law conservation of linear momentum.

The velocity of 2nd train relative to first train is 15-(-10)=25m/s, when we say relative to first train then first train has to be considered stationary. With this picture second train has to travel 100 m with relative velocity of 25m/s. So, it will take 100/25=4s.

Normalstressontheballoon:Normalstress=Atmpressure+hdg=10^5+1000×1000×9.8=9.9×10^6Pa

Let u and v be the velocity of two trains A and B. While overtaking the relative velocity of train A w.r.t B = u -v.

ummmah thanks 👍👍n casual reply

FloatingofBodies. The state of equilibrium of a solidbodypartially or fully immersed in a liquid or gas is calledfloating.

The theory offloatingis concerned principally with determining the equilibrium positions of abodyimmersed in a liquid and with ascertaining the conditions for stability of the equilibrium.

The main difference is that in mirror image , there is a lateral inversion of the object happens

and that is a phenomena is reflection of light in plane mirror in which left object seems to be right and right objects seems to be left.

but this is not observed in a photograph

thanks

Case (a)

Mass of the monkey,m= 40 kgAcceleration due to gravity,g= 10 m/sMaximum tension that the rope can bear,Tmax= 600 NAcceleration of the monkey,a= 6 m/s2upwardUsing Newton’s second law of motion, we can write the equation of motion as:T–mg= ma∴T=m(g+ a)= 40 (10 + 6)= 640 NSinceT>Tmax, the rope will break in this case.

Case (b)Acceleration of the monkey,a= 4 m/s2downwardUsing Newton’s second law of motion, we can write the equation of motion as:mg –T=ma∴T=m(g– a)= 40(10 – 4)= 240 N

SinceT<Tmax, the rope will not break in this case.

Case (c)The monkey is climbing with a uniform speed of 5 m/s. Therefore, its acceleration is zero, i.e.,a= 0.Using Newton’s second law of motion, we can write the equation of motion as:T–mg= maT–mg = 0∴T=mg= 40 × 10= 400 NSinceT<Tmax, the rope will not break in this case.

Case (d)When the monkey falls freely under gravity, its will acceleration become equal to the acceleration due to gravity, i.e.,a =gUsing Newton’s second law of motion, we can write the equation of motion as:mg –T=mg∴T=m(g–g) = 0SinceT<Tmax, the rope will not break in this case.

: Molar specific heat of a gas 1 .dQ Cn dT = Where dQ = Heat supplied dT = Change in temperature a) In isothermal process 1 0 .0dQ dT C Cn = ⇒ = ⇒ =∝b) In adiabatic process 0 dQ C 0 0

a. Resistanceisdefinedas the property of aconductorto resist the flow of charges through it.

The resistance of conductoris numerically given as the ratio of potential difference across its length to the current flowing through it.

Opposition offered by thecapacitorto the flow of a.c. through it is calledcapacitive reactance. It is denoted by XC.Its S.I.unitis ohm.

The measure of the ability of an object to resist a change in it's motion is called Inertia.

total impedance of the circuit = 11 + (25-18)ĵ = 11 + 7ĵmagnitude of impedance = √11²+7² = 13So, current = 260/13= 20 A

Motor unitsare the final element of neuromotor control. In manner analogous to the organization of neuromotor control in other skeletal muscles, diaphragmmotor unitscomprise phrenic motoneurons located in the cervical spinal cord that innervate the diaphragm muscle, the main inspiratory muscle in mammals. Diaphragmmotor unitsplay a primary role in sustaining ventilation but are also active in other nonventilatory behaviors, including coughing, sneezing, vomiting, defecation, and parturition.

option B

If the frequency is halved and intensity is doubled the frequency if incident light become 1.5/2=0.75 time the threshold frequency .Hence photoelectric current will be zero

option D. is correct..because , until the frictional force is countered by the F = 2t, the block won't move.. and static friction will be there..

when the F exceeds the static friction value.

it will move with acceleration = F/m = 2t/m ,

here a ∞ t.. so straight line after it will be followed.

a) y = A sin(wt - kx) sahi hai

Its a phase differenceso it is measured in degrees or radian

option d.

can you explain plz

anytime inside.. cos , should be a number and numbers are dimensionless

so, (t/p) and qx should be dimensionless

and for t→ sec , so, p →sec. so t/p = sec/sec = 1