Recently Active Physics Questions

I am writing this post to all engineering aspirants. I want to make a very valid point so that you do not make the same mistakes as I did in+2... The first mistake is that all of us blindly start preparing for iitjee.Please t ...

A person throws a bottle into a dustbin at the same height as he is 2m away at an angle of 45°. The velocity of the bottle thrown is: Q 1. g 2. √g 3. 2g 4.√2g g comes inside the root in respective cases. ...

Q1> A particle of mass 'm' was transferred from the center of the base of uniform hemisphere of mass 'M' and radius 'R' into infinity.What work was performed in the process by the gravitational force on the particle by the ...

A simple pendulum consists of a bob of mass m and a light string of length l.Initially it is hanging vertically.Another identical ball moving with small velocity v0 horizontally collides with the pendulum's bob and sticks to ...

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what is the value of acc. due to gravity on the planet's surface a) 1m/s^2 b) 2m/s^2 c) 4m/S^2 d) 9.8m/s^2 . . please explain. ...

*Image* The figure shows a block in the influence of a force 500N. Friction working is 100N. The net force causes a displacement of 3m of the body.Find the work done against friction. ...

I am in 11th class and please tell me is coaching institute study material exercises are sufficient or should I try out HC Verma or DC Pandey , which book do you suggest from Arihant for 11th class physics practice (not theor ...

I am drinking a glass of lassi or juice. I insert a straw (perpendicularly) inside it. Let's say that for a certain value of the thickness(density) of the juice, the straw stands still straight. what is the minimum density of ...

A particle is projected vertically upwards and reaches the maximum height H in time T. The height of the particle at any time t will be (a)g(t-T)2 (b)H-g(t-T)2 (c) g(t-T2)/2 (d)H- g(t-T)2/2 ...

A body of mass 10 kg is being acted upon by a force 3t2and an opposing constant force of 32N.The initial speed is 10ms-1.The velocity of body after 5s is (a)14.5ms-1 (b)6.5ms-1 (c)3.5ms-1 (d)4.5ms-1 (According to me, accelera ...

A point mass starts moving in a straight line with constant acceleration.After time to the acceleration changes its sign,remaining the same in magnitude.Determine the time t from the beginning of motion in which the point mas ...

An ant is at a corner of a cubical room of side a.The ant can move with a constant speed u.The minimum time taken to reach the farthest corner of the cube is (a) 3a/u (b) 3 a/u (c) 5 a/u (d) ( 2 +1)a/u (According to me, if th ...

The velocity of a particle moving in a straight line is decreasing at the rate of 3m/s per metre of displacement at an instant when the velocity is 10 m/s.Determine the acceleration of the particle at this instant. ...

A car starts from rest and accelerates at constant rate in a straight line.In the first second the car covers a distance of 2m.The velocity of the car at the end of second(sec)will be (a)4.0ms-1 (b)8.0ms-1 (c)16ms-1 (d)None o ...

A boat is moving with a velocity (3i+4j)with respect to ground.The water in the river is moving with a velocity -3i-4j with respect to ground.The relative velocity of the boat with respect to water is (a)8j (b)-6i-8j (c)6i+9j ...

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A river is 20 m wide.River speed is 3 m/s.A boat starts with velocity 2√2 m/s at angle 45° from the from the river current(relative to river).How far from the point directly opposite to the starting point does the boat rea ...

A person walks up a stalled 15m long escalator in 90s.When standing on the same escalator,now moving,the person is carried up in 60s.How much time would it take that person to walk up the moving escalator?Does the answer depe ...

1)If the velocity v of a particle moving along a straight line decreases linearly with its displacement from 20m/s to a value approaching zero at s=30m,determine the acceleration of the particle when s=15m. (Can u please solv ...

What is StatVolt? ...

A particle moves along a horizontal path,such that its velocity is given by v=(3t2-6t)m/s,where t is the time in seconds.If it is initially located at the origin O,determine the distance travelled by the particle in time inte ...

what will happen if a charge is put on a bubble???????? ...

hi, we know that electric field inside the conductor is zero. but why is it so? why charges move to the surface. anyone please reply..... ...

Two particles A and B start moving simultaneously along the line joining them in the same direction with acceleration of 1 m/s2 and 2 m/s2 and speeds 3 m/s and 1 m/s respectively.Initially A is 10m behind B.What is the minimu ...

If a and b are two vectors then the value of (a+b)x(a-b) is (a)2(bxa) (b)-2(bxa) (c)bxa (d)axb ...

A particle is moving in a circle of radius 4 cm with constant speed of 1m/s.Find average acceleration in a time interval from t=0 to t=T/4.Here,T is the time period if the particle.Give only the magnitude.(T turns out be abou ...

Explain the Process and what should be the correct answer and why? *Image* ...

A balloon starts rising from the earth's surface.The ascension rate is constant and equal to vo.Due to the wind,the balloon gathers the horizontal velocity component vx=ky,where k is a constant and y is the height of ascent.F ...

A+B=C and A+B=C .Find the angle between A and B. Note-A,B,C are vectors and A,B and C are their respective magnitudes. ...