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Two masses of 5 kilogram and 10 kilogram and are connected by a compressed spring and rest on a frictionless table. The spring has a spring constant of 18,750 N/m and is compressed 20 centimeter. After the spring is released, compute what are the speeds of the two masses?
What is the angular momentum of a 3.2 kg uniform cylindrical grinding wheel of radius 12cm while rotating at 1400 rpm.
At high noon, the Sun delivers 1000 W to each square meter of a blacktop road. If the hot asphalt transfers energy only by radiation, what is its steady-state temperature?
A sanding disk with rotational inertia 2.0 multiply.gif 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of 8 N·m about the central axis of the disk. compute the angular momentum of the disk
Two charged particles, q1 = ?2.50×10?3 C and q2 = +3.550e-3 C, are separated by a distance of 5.00 cm. find the electric potential energy of this configuration
A student sits on a freely rotating stool holding two dumbels, each of mass of 3.00kg. find the kinetic energy rotating system before and after he pulls the dumbbells inward
four protons are placed at the corners of a square of side length a 1.0 angstrom. the square is in the x y quadrant of
A 0.00275-kilogram air inflated balloon is given an excess negative charge, q1 = -3.50 × 10-8 C, by rubbing it with a blanket. what polarity of charge must the rod possess
the moment of inertia of a 4.0m long board pivoted at its center is 25kgm2. find the moment of inertia when it is used
A 6220 kg space probe moving nose-first toward Jupiter at 140 m/s relative to the Sun fires its rocket engine, ejecting 80.0 kg of exhaust at a speed of 258 m/s relative to the space probe. What is the final velocity of the probe? m/s
A converging lens can be used as a lighter (on a sunny day). If you want to use it to light a match, where should you put the match, What is the radius of the mirror
A hydrogen atom has a radius of about 0.05 nm. estimate the electron's kinetic energy in three dimensions.
A 921 kg car is moving rightward with a speed of 29.0 m/s. find the average resistive force acting upon the car
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