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Problem: A CD-ROM drive in a computer spins the 12-cm-diameter disks at 7600 rpm.
Required:
Question 1: What is the disk's period (in s)?
Question 2: What is the disk's frequency (in rev/s)?
Question 3: What would be the speed of a speck of dust on the outside edge of this disk?
Question 4: What is the acceleration in units of g that this speck of dust experiences?
White light illuminates an oil film on water. Viewing it directly from above, What is the refractive index of the oil
A helium ion (Q = +2e) whose mass is 6.6×10?27kg is accelerated by a voltage of 3700V, What is its speed? Express your answer to two significant figures and include the appropriate units
You pull a simple pendulum of length 0.240m to the side through an angle of 3.50degree and release it. how much time does it take the pendulum bob to reach its.
A body moves from rest at point A for a time T with a positive constant acceleration, after it moves with the negative of this acceleration. How long will it take the body to return to point A
a block of mass 5.0 kg is pulled across a horizontal surface at a constant speed by a force 14 n directed at 35 degrees
Two parallel slits are illuminated by light composed of two wavelengths, one of which is 654 nm. What is the unknown wavelength
For selected years from 1960 to 2008, the data in the table show the percent of U.S. public roads that are paved.
What is the coefficient of friction for the surface?
a dentist uses a mirror to examine a tooth that is 1.00 cm in front of the mirror. the image of the tooth is formed 5.0
Large electric fields in cell membranes cause ions to move through the cell wall, as we will explore in a later chapter. What is the magnitude of the force on a calcium ion with charge +e
Assume she starts at the top of the wave with a speed of 1.4 meter per second and moves down the wave until her speed increases to 9.5 meter per second. determine how much work is done by the (non conservative) force of the wave
If instead you made a mistake and compressed the spring 15 centimeter from its equilibrium position, calculate how fast would the block be traveling when it passed the 50 cm point up the incline
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