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Objects with masses of 170 kilogram and a 470 kilogram are separated by 0.420 meter.
(a) Obtain the net gravitational force exerted by these objects on a 54.0 kg object placed midway between them.
(b) Find at what position can the 54.0 kg object be located so as to experience a net force of zero?
Two point charges, +3.70 µCand -6.10 µC, are separated by 1.60 m. What is the electric potential midway between them
A spherical mirror is polished on both sides. when you use aconvex mirror the magnification is +1/6. What is the magnification when used as a concave mirror the object remaining the same distance form the mirror?
A 4.4 cm radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 185 rad/s^2, How long is the plane
A helicopter is ascending vertically with a speed of 5.02m/s. At a height of 140m above the Earth, a package is dropped from the window. How much time does it take for the package to reach ground.
Consider the reaction 4He + 40Ca -> 3H + 21Sc Find the minimum laboratory kinetic energy for the 4He projectile if 40Ca is stationary
A monochromatic beam of light of wavelength 600 nm is incident normally on a diffraction grating with a slit spacing of 1.70 × 10-4 cm
A 9.6-cm-diameter circular loop of wire is in a 1.10-T magnetic field. The loop is removed from the field in 0.15 s. What is the average induced emf
A black body at 7500K consists of an opening of diameter0.0500mm looking into an oven. Find the number of photons per second escaping the hole
A certain organ pipe, open at both ends, produces a fundamental frequency of 256 in air.If the pipe is filled with helium at the same temperature, what fundamental frequency will it generate ? Take the molar mass of air to be 28.8 and the molar ma..
a 200 g block is dropped onto a relaxed vertical spring that has a spring constant of k 3.0 ncm. the block becomes
a 48 kg skier skis directly down a frictionless slope angled at 13deg to the horizontal. assume the skier moves in the
Two stretched cables both experience the equal stress. Calculate the stretching force acting of the second table
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