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A cupcake with m=437.7 g is attached to a spring with spring constant k=46.7 N/m and rests on a flat, frictionless table. If you pull the cupcake a distance of d=23.5 cm in the +x direction and release, what will the velocity of the block be at time t=7.97 s after the release? Express your answer in m/s.
Two insulated wires, each 2.90 m long,are taped together to form a two-wire unit that is 2.90 m long. One wire carries a current of 7.00 A;the other carries a smaller current I in the oppositedirection. The two wire unit is placed at angle of 51.0..
The coefficient of kinetic friction between the floor and the suitcase is 0.21. If the suitcase has a mass of 62 kilogram, determine how far can it be pushed across the level floor with 710 Joule of work
How many molecules are in a volume of 1 m3 at a pressure of 2 atmospheres at a temperature of 0oC? How many moles is this? Does it matter what type of molecules these are (as long as they are gaseous at 0oC)?
Jack and Jill ran up the hill at 3.5 m/s. The horizontal component of Jill's velocity vector was 2.5 m/s. Determine what was the angle of the hill
Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top end of the string stationary, What is the linear speed, v, of the yo-yo after it has dropped through a height 0.50hm
When a mass m is hung a spring the spring stretched 6.0cm. What is the period of vibration if it is then pulled down a little and released
Compute the impedance of a series R-L-C circuit at angular frequencies of ?1= 1000rad/s , ?2= 715rad/s and ?3= 545rad/s, What is the phase angle of the source voltage with respect to the current
What is an expression for the maximum displacement of m2
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.138 N when their center-to-center separation is 67.1 cm. What was the negative charge on one of them
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons, How many electrons are there in 1.79 liters of water
A model rocket is launched straight upward with the initial speed of 70m/s. It accelerates with a constant upward acceleration of 3 m/s2 until its engines stop at an altitude of 180 m.
A "105-watt" lightbulb uses an average power of 105 W when connected to an rms voltage of 120 V. What is the resistance of the lightbulb
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