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Q. A concave mirror is of hemisphjerical shape with radius 40cm. A thin layer of unknown transparent liquid is poured into mirror. The mirror liquid forms a real image and another real image is formed by the mirror alone. One of them coincides with object and other is at a distance 20 cm from the object in the direction away from mirror.
What is the value of refractive index?
what is the volume of an iron atom. What is the ratio of the mass density of girder A to the mass density of girder B.
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
ow does this change in amplitude affect the wave's frequency.
For a damped oscillator with a mass of 180 g, a spring constant 58 N/m and a damping coefficient of 60g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 26 cycles.
An electron is initially at rest just outside a large copper surface that has the charge density of 1.20 x10-6 C/m2. How far has the electron moved in 1.07 x10-9 s if the field is uniform over this region.
When two point charges are a distance R apart, their potential energy is -2.00 .How far (in terms of R) should they be from each other so that their potential energy is -6.00.
If 3.43×10^8 electrons flow through the ground wire to Earth and the ground wire is then removed, what is the net charge on the electroscope.
how fast is the bag moving when the bults exits. If you wish to find the distance traveled using the equation d = 1/2 at2, what value should you use for a.
If a car traveling at 62 km/h will skid 22 m as its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock.
What are the direction and magnitude of the magnetic force the field exerts on the proton.
A rocket rises with constant acceleration to an altitude of 85 km, at which point its speed is 3.1km/s.what is the acceleration in m/s.
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