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A wheel is spinning freely on its axis with an angular velocity, w, of 1 rad/s. It has a kinetic energy of 10 Joule. Find what will its kinetic energy be if the angular velocity is 5 rad/s?
a piece of pure gold (density= 19.3g/cm^3) is suspected of having a hollow center. What is volume of the hollow center
The potential on the axis of a uniformly charged disk at 5.5cm from the disk center is 140V ; the potential 12cm from the disk center is 110V. Find the disk radius in cm
a skateboarder starting from rest rolls down a 14.6-m ramp. when she arrives at the bottom of the ramp her speed is
A charged particle A exerts a force of 2.47 μN to the right on charged particleB when the particles are 13.5 mmapart. Particle B moves straight away from A tomake the distance between them 18.6 mm. What vector force does particle B then exert on A?
A tiny source is emitting electromagnetic radiation equally in all directions. What is the power with which the source emits radiation
Length A is measured to be 7.5cm±0.3 cm and length B is 7.0cm±0.6cm. What is the difference between the two lengths, LB - LA
1 the active element of a certain laser is an ordinary glass rod 18.4 cm long and 1.14 cm in diameter. if the
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 stone is thrown vertically downward at an initial speed of 14m/s from a height of 65 meter above the ground. Determine its velocity just before it hits the ground
The normal airflow over the Rocky Mountains is west to east. The air loses much of its moisture content and is chilled as it climbs the western side of the mountains. What is its temperature at the end of the descent
During an earthquake, the floor of an apartment building is measured to oscillate in approximately simple harmonic motion with a period of 1.60 seconds and an amplitude of 9.00cm, Determine the maximum speed of the floor during this motion
question1a 69 kg boy and a 45 kg girl apply an elastic rope at the same time as engaged in a tug-of-war on an icy
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