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The radio frequency used internationally for distress calls is 2182 kHz. Determine the corresponding wavelength in meter?
Hint: Check your units. The frequency is given in units of kHz. 1kHz = 1000 Hz = 1000/s.
a cd has a playing time of 47.4 minutes. when the music starts the cd is rotating at an angular speed of 512
Using the equation for the period of a pendulum, determine the period of a pendulum that is 3.0m long, Estimate the spring constant for each of the four springs on a 1260kg car if the static weight of the car causes the springs to compress 10.0cm
An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 13 complete swings in a time of 35.4 seconds. From this measurement she calculates the acceleration due to gravity on the Mars.
Airplane flight recorders must be able to survive catastrophiccrashes. Therefore, they are typically encased in crash-resistantsteel or titanium boxes that are subjected to rigorous testing. Oneof the tests is an impact shock test, in which the bo..
It has been suggested that rotating cylinders about 8.0 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acce..
A ship, carrying fresh water to a desert island in the Caribbean, has a horizontal cross-sectional area of 2790m2 at the waterline. How much water was delivered
An extremely large nonconducting sheet creates equipotential surfaces, which are planes. What is the surface charge density on the sheet
A tire of radius R rolls in a straight line without slipping. Its center moves with constant speed V. A small pebble lodged in the tread of the tire touches the road at t=0. find the pebble's position, velocity and acceleration as functions of time. ..
Find out the magnitude of the velocity of the heavier fragment relative to the ground just after explosion.
A helium-filled toy balloon has a gauge pressure of 0.400 atm and a volume of 8.0 liters. How much greater is the internal energy of the helium in the balloon
A platform is rotating at an angular speed of 2.1 rad/s. A block is resting on this platform at a distance of 0.33 m from the axis. determine the smallest distance from the axis
A 70-kg log falls from a height of 25 m into a lake. If thelog, the lake, and the air are all at 300K, find the change inentropy of the Universe for this process
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