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You whirl a 0.50 kg rock on a string over your head. It takes 1.0 second for the rock to make a complete revolution. The string is 1.5 m long. What is the velocity of the rock, What is the centripetal acceleration of the rock, What is the tension in the string?
Consider a uniform thin rod of length 2.00 m and mass 1.00 kg is lying on a smooth horizontal table. How far does the center of mass of the rod travel during the time it takes to make one complete revolution
An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 11.0 m/s in 4.40 s. find the magnitude and direction of the bird's acceleration
What is the partial pressure of oxygen in humidified air (RH= 100%) at body temp, if the barometric pressure is 750 torr
q1. a skier is accelerating down a 30.0deg hill at a 4.50 ms2a what is the vertical component of her acceleration? ms2
You are making a diffraction grating that is required to separate the two spectral lines in the sodium D doublet, What is the minimum number of lines you should have on the grating
You have two capacitors, one with capacitance 18.5 × 10-6 F and the other of unknown capacitance, You discover that, as a result, the unknown capacitor has a charge of 0.00143 C. Find its capacitance
The density of a 3.0-m long rod can be described by the linear density function ?(x) = 125 g/m + 13.0x g/m2. Determine the total mass of the rod
A baseball is thrown from the roof of a 22.0 m tall building with an initial velocity of mag 12.0 m/s and directed at an angle of 53.1 degrees above the horizontal. (a) What is the speed of the ball just before it strikes the ground?
A 2.3 kg pendulum bob is pulled out such that its center of mass is 0.26 m above its lowest point and released. What is the gravitational potential energy of the pendulum
A dog chasing a ball starts at rest and accelerates uniformly over a distance of 5 meters. What is the dog's acceleration
Find out an effective coefficient of kinetic friction
a teacher standing in a doorway 1.0 m wide blows a whistle with a frequency of 1000 hz to summon children from the playground. which boy may not hear the whistle
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