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Assume some dog tags create a sound with a frequency of 1387 Hz at rest. You place these dog tags on a greyhound dog. The dog runs towards you and moves with a speed of 10.9m/s with her tags clanging together.
What is the frequency that you hear of the sound created by the dog tags? (The speed of sound in air is 344 m/s.)
At 0.0° C and 1.00 atm, 0.80 mol of a gas occupies a volume of 0.0179 m3. Estimate the average distance between the gas molecules
A Ferris wheel rotating at 20 rad/s decelerates with a constantangular acceleration for -5.0 rad/s2. How many revolutions does it rotate before coming to rest
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box, Find the acceleration of the box
The length of a spaceship is measured to be exactly 1/3 its restlength. (a) What is the speed parameter β ofthe spaceship relative to the observer's frame?(b) By what integer factor do the spaceship'sclocks run slow, compared to clocks in the observe..
a subway train starts from rest at a station and accelerates at a rate of for 14.0 . it runs at constant speed for 70.0
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
A man walks 34 degree north of east for 4.10 kilometer. Another man walks due north and due east to arrive at the similar location. Find how large is the east component of this second path
A saw blade has a mass of 0.5 kg and a radius of 10 cm and is rotating at 300 rpm. Once turned off, it takes 5 seconds to slow to a complete stop. What frictional torque acts on the saw blade as its lows to a stop?
If the magnitude of vector A is 10.0 m and that of vector B is 12.5 m, what is the range of values allowed for the magnitude of the sum of A and B?
A telescope is used to observe two distant point sources transversely 2.50 {\rm m}apart with light of wavelength 600 {\rm nm} .The objective of the telescope is covered with a slit of width0.350 {\rm mm} .
Find the capacitance of a parallel plate capacitor that has two square plates both having a side length of 6 cm, where these plates are seperated by 15 mm
The coefficient of kinetic friction between a refrigerator (mass 100kg) and the floor is 0.20, and the coefficient of static friction is 0.25. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration be?
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