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A spring lies on a horizontal table, and the left end of the spring is attached to a wall. The other end is connected to a box. The box is pulled to the right, stretching the spring. Static friction exists between the box and the table, therefore when the spring is stretched only by a small amount and the box is released, the box does not move. The mass of the box is 0.70 kilogram, and the spring has a spring constant of 52 N/m. The coefficient of static friction between the box and the table on which it rests is μs = 0.80. Obtain how far can the spring be stretched from its unstrained position without the box moving when it is released?
Estimate the number of breaths taken by a human being during an average lifetime
A grandfather clock is controlled by a swinging brass pendulum that is 1.3 m long at a temperature of 30.°C. What is the change in the length of the pendulum rod
To fit a contact lens to a patient's eye, a keratometer can be usedto measure the curvature of the cornea-the front surface of theeye. Determine the radius of curvature of the cornea
You have a 3.5 m high platform that is level on top. A spring launcher is located on the top so that it launches objects horizontally. How far away from the launcher will it hit the ground
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A 0.2kg aluminum plate, initially at 20C, slides down at a 15.00 m long surface, incline at a 30 degree angle to the horizontal. The force of kinetic friction exactly balances the component of gravity down the plane so that the plane.
A 1000 kg car carrying four 84 kg people travels over a %u201Cwashboard%u201D dirt road with corrugations 3.8 m apart, by how much does the car body rise on its suspension
A violin string has a length of 0.360 m and is tuned to concert G, with fG = 392 Hz. (a) How far from the end of the string must the violinist place her finger to play concert A, with fA = 440 Hz? cm from the bridge (b) If this position is to remain ..
In Fig. 29-43, point P2 is at perpendicular distance R = 21.4 cm from one end of straight wire of length L = 10.7 cm carrying current i = 0.949 A. (Note that the wire is not long.) What is the magnitude of the magnetic field at P2 (in T)?
The voltage impressed across a circuit is held constant. If the resistance is halved, what change will occur in the current
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