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A block starts from rest at the top of a 30o inclined frictionless plane and after travelling 1 meter encounters a spring, of constant 3.0 kN/m, rigidly attached to the plane. If the block's mass is 35 kilogram, find how much would block compress the spring?
A 46 kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of - 1.2 m/s. Her hands are in contact with the wall for 0.8 s. Ignore friction and wind resistance.
A satellite of mass320kg is in a circular orbit around the Earth at an altitude equal to the Earth's mean radius. Calculate the gravitational force acting on it
A spring with spring constant 34N/m is attached to the ceiling, and a 4.6-cm-diameter, 1.4kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
a typical automobile under hard braking loses speed at a rate of about 6.4 ms2 the typical reaction time to engage the
An object placed 2.6 meters in front of a mirror produces an inverted image of one half the size. find Is it convex or concave
The rocket's speed was measured to be1.07c. The rocket's rest length is 126 m. An observer flying by gauged the rocket to be 777 m long. A rocket flying with the Sunat 0.85c gauged the speed of the photons (particles of light) emitted with the Sun to..
A cube of edge length l = 3.80 cm is positioned as shown in Figure P30.35. A uniform magnetic field given by B = (5.50 i + 4.00 j + 3.00 k) T , Calculate the flux through the shaded face
Two springs with spring constants k1 and k2are put together end-to-end. Let x1 be the amount by which thefirst spring is stretched relative to its equilibrium length, andsimilarly for x2.
A basketball rolls without slipping down an incline of angle ?. The coefficient of static friction is ?s. Model the ball as a thin spherical shell. Find the frictional force acting on the ball
A copper rod 25 cm long having a cross-sectional area of 7.5 cm2 is used to connect a boiler maintained at 100 oC to a large block of ice at 0 oC. What is the rate of change in entropy of the ice
A bartender slides a drink along a bar to a customer seated 3 metres away in the positive x direction. At what initial speed should the bartender send the drink
If a positron (a positively charged particle with the mass of the electron) and a proton go through the same potential difference, By what factor is the wavelength shorter
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