Explore topic-wise InterviewSolutions in .

A particle is moving with constant speed v along x-axis in positive direction. Find the anqularvelocity of the particle about the point (0, b). when position of the particle is (a, 0)

A force can:

Why do we have to bring a small object near the eyes in order to see it clearly?

Which one of the following equations is valid for the circuit shown below?

A cylindrical block of wood of height 4.2m and mass 100Kg floats vertically in water. The relative density of wood is 0.8 . What height of the block will be seen above the water ?

4.A car weighing 1600 kg moving with a velocity of 30m/s regards uniformly coming to rest in 20s .initial and final momentum of the car

Consider the charges q , q , -q placed at the vertices of an equilateral triangle . What is the force on each charge ?

Question 8 (c)Name the type of mirror used in the given situation.Solar furnaceSupport your answer with reason.

for water at 0c it takes 1hr for first 3mm of ice layer formation how much time will it take for next 6mm of ice

what is the work done to increase the velocity of a car from 45 kilometre per hour to 80 km per hour if the weight of the car 200 N

Derive and explaina)Wnet(net work done)=∆KEb)Wext=-Wfieldc)∆PE+∆KE=0

67. Find moment of inertia Of a 45-45-90 and equilateral triangle about it's centre of mass.

a boy weighing 40kg carries a box weighing 20kg to the top of a building 15m high in 25sec. calculate the power.

Momentum is calculated as: m: Mass v: Velocity

How much work is done in moving a charge of 4 C across two points having a potential difference 12 V?

Who had predicted that "matter was based of 4 different quantities and it could be divided forever?"

1. Write the formula for resistance of a wire of length L and cross-section A.2. A piece of wire is redrawn by pulling it until its length is doubled. Compare the newresistance with the original value.3. How many 176Ω resistors (in parallel) are required to carry 5 A in 220 V line? [5 MARKS]

A man running on a horizontal road at 8km/h finds the rain falling vertically. He increases his speed to 12km/h and finds that the rain is now falling at an angle of 30 degrees with the vertical. Find the speed and direction of rain w.r.t ground. Provide detailed solution.

A cricket ball weighing 100 g and moving with a speed of 20 m s−1 strikes a bat and remains is contact with it for 0.1 s. The average force exerted by the ball on the bat is:

Am elevator lifts a load of 1250 kg through a height of 20m in 5s. Calculate the power of the elevator.

Spectrum of NBFM signal is given below with modulation index of 0.8. The total power of NBFM in kWatts is______.4.22

derive newtons second law from newtons 1st law mathematically

A force F-t(уїнх) (where k is constant) acts aon a particle moving in the xy plane. Starting fromorigin, the particle is taken along y-axis to the pointo, a). The work done by agent applying the forceF on the particle is W Eyds(1) K(ke+ y2) Zero(3) ky(4) kxstraigh

The speed at any instant of time is known as

The figure shows the elliptical orbit of a planet m about the sun S. The area SCD is twice the area SAB. If t1 be the time for the planet to move from C to D and t2 is the time to move from A to B, then :

Question 6(v)A courier-person cycles from a town to a neighbouring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graphDuring which period did he ride fastest?

11.Car A moves in North diretion with speed 7 m/s. Another car B moves in a direction 37^° North of East. For driver B , Car A appears North-West. Find the magnitude of speed of car B and also find velocity of car A wrt car B.

2points p1 and p2 are oppositely placed at same distance from centre of short dipole along axial line of dipole. If v1 and v2 are electric potential at these points respectively, then

Calculate the distance covered by car C before overtaking car A. [3 MARKS]

Who advocated the decimal system of coins, weights and measures?

What is the formula of density

52. When a 4 kg rifle is fired,the 10 g bullet receives an acceleration of 3000000cm/s^2 The magnitude of force acting on the rifle is 1)0 N 2)120 N 3)300 N 4)3000 N

Two resistors of resistances 5Ω and 12Ω are connected in series. The equivalent resistance is:

A car travels first 30km at a speed of 40km/hr and next 30km at a speed of 20km/hr. Find the average speed of the car

Name and state the action and reaction in the following cases : (i) Firing a bullet from a gun. (ii) Hammering a nail. (iii) A book lying on a table. (iv) A moving rocket. (v) A person walking on the floor. [5 MARKS]

Explain why big boulders can be moved easily by flood

A vertical glass capillary tube open at both ends contains some water. Which of the following shapes may be taken by the water in the tube

The current in an LR circuit builds up to (34)th of its steady state value in 4 s. The time constant of this circuit is

When we touch a metal pole with our tongue it gets stuck.WHY?

A retaining wall 3 m high, holds a backfill with c=24kN/m2 and ϕ=30∘. In order to completely remove the possibility of tension cracks, the minimum surcharge that should be applied on the backfill is:

a narrow glass tube 80cm long and opens at both ends is half immersed in mercury now the top of the tube is closed and is taken out of mercury .A coloumn of mercury 20cm long remains in the tube . find atmospheric pressure a)60cm of Hg coloumn b)60cm of air coloum

According to mirror formula, the correct relation between the image distance (v), object distance (u) and the focal length (f) is:

. Two balls each of mass m are hung side by sideby two long threads of equal length l. If the distance between the upper ends of threads is r (r

A ball is thrown vertically upwards with a velocity of 20 m/s from top of a multisory building. Theheight of the point where the ball is thrown is 25 m from the ground a) How high will the ball rise ?and b) how long will it be before the ball hits the ground?

Imagine a planet is revolving around a very massive star in a circular orbit of radius R with a period of revolution T. If the gravitational force of attraction between the planet and the star is proportional to R−52, then

Why does electric current is a scaler quantity

why do electromagnetic and non mechanical wave do not require any medium to travel?And if it can travel through vaccum then why does it speed get affect ,travelling through various states?

A monoatomic gas follows a process TV = constant. The ratio of work done to change in internal energy when the gas goes from one state to another is given by k/3 (in magnitude), where k is an integer. Find k.

The ratio of density of a substance to density of water at 4°C is usually referred as: