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A horizontal spring is lying on a frictionless surface. One end of the spring is attached to a wall, and the other end is associated to a movable object. The spring and object are compressed by 0.056 m, released from rest, and subsequently oscillate back and forth by an angular frequency of 10.8 rad/s. What is the speed of the object at the instant when the spring is stretched with 0.047 m relative to its unstrained length?
a person who weighs 705 n is riding a 98-n mountain bike. suppose the entire weight of the rider and bike is supported
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.59 x 104 rad/s to an angular speed of 4.47 x 104 rad/s. In the process, the bit turns during 3.49 x 104 rad. assuming a constant angular acceleration, how long wo..
Suppose a uniformly charged (with a linear charge density) wire starts at point 0 and rises vertically along the positive axis to a length. Determine the x-component of the electric field at point. That is, compute near one end of a long wire, in the..
When a resistor is connected across the terminals of an acgenerator (114 V) that has a fixedfrequency, there is a current of 0.485 Ain the resistor. When an inductor is connected across the terminals of this same generator, there is a current of 0..
Why were the relative intensities of an element's spectral lines NOT all the same? The next corresponding hydrogen line in the Balmer series shouldbe due to the n=7 to n=2 transition. Calculate the wavelength of this line and offer an explanation ..
A 2.00-m-long air column is open at both ends. Thefrequency of a certain harmonic is 410 Hz, Determine the speed of soundin the air column
Two point charges lie on the x axis. A charge of 6.2uC is at the origin, and a charge of -9.4uC is at x=10.0cm. What is the net electric field at x=+4.0cm
A small town stores its drinking water in a tower. What should be the tower's height
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo
A rock is thrown downward from the top of a 39.8-m-tall tower with an initial speed of 9 m/s. Assuming negligible air resistance, what is the speed of the rock
A grinding wheel 0.45 in diam rotates at 2900. What is acceleration of a point on the edge of the grinding wheel.
A 2kg box is released, from rest, at the top of a rough circular track of radius 10cm. calculate the work done by all resistive forces
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