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A pulley rotating in the counterclockwise direction is attached toa mass suspended from a string. The mass causes the pulley'sangular velocity to decrease with a constant angular accelerationα = -2.1 rad/s2. If the pulley's initialangular velocity is ω = 5.40 rad/s, how long does ittake before the angular velocity of the pulley is equal to -5rad/s?
q1. a car with a mass 1865 kg is travelling west and slows down uniformly to 8.5 ms over a distance of 108 m. calculate
The quantity of charge q (in coulombs) that has passed through a surface of area 2.08 cm2 varies with time according to the equation q = 4t3 + 5t + 6, What is the value of the current density
q1. a 60 kg circus performer jumps from a 6.2 m height onto a trampoline and stretches it downward 0.36 m. assume that
A box with mass 7.0 kg is sliding down a frictionless ramp that is 2.6 m long and inclined at 33 deg. above the horizontal. how long will it take to reach the bottom of the ramp
which you analyze late adulthood and the death of an individual as a culmination of the life span developmental
A large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
A cylinder is fitted with a piston that is connected to the bottom by a spring. Find the work done by pressure in compressing the spring
An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. The heavier fragment slides 9.10 m before stopping. How far does the lighter fragment slide
A spaceship with an earth weight of 3430 N is sent to Mars, which has radius, RM = 3.40 × 106 m, Find the weight of the spaceship on the Martian surface
a 20-kg mass is attached to a spring. if the frequency of the simple harmonic motion is 2pi cycles what is the spring
Because a concave lens cannot form a real image of a real object, it is difficult to measure its focal length precisely. What is the focal length of the concave lens
A motor may be modeled as a series RL circuit. A particular motor operates from an ordinary 60-Hz wall outlet with Erms= 115 V. what is the inductive reactance of the circuit
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