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A light string is wrapped around a 0.160-kg hollow 0.080-m-radius hoop. The hoop is released from rest and the fee end of the string is held in place.
(a) What is tension in the string while the hoop falls?
q1. a ski jumper has 1.2 acute 10 j of potential energy at the top of the ski jump. the friction on the jump slope is
A rock is dropped from a bridge to the water below. It takes 2.4 s to hit the water. Find the final speed of the rock when it hits the water. How high is the bridge above the water
A hang glider and its passenger has a mass of 95kg. The wing has an area of 11.0m^2. what must be the airspeed above the wing to create lift
What is the centripetal force that would be required to keep a 4.0 kg mass moving in a horizontal circle with a radius of 0.80 meters at a speed of 6.0 meters/second?
What is the frequency of a spring with spring constant 420 N/m that has attached a mass of 3.5 kg and initially displaced 0.25 meters. what is the maximum kinetic energy this mass obtains
A car travels along a straight east-west road. A coordinate system is established on the road, how far from Mulberry Road did it start
A ship sets out to sail to a point 148 km due north. An unexpected storm blows the ship to a point 148 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive angl..
A 69 kg boy and a 40 kg girl use an elastic rope while engaged in a tug-of-war on an icy, frictionless surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
using planck's law, Evaluate the Stefan-Boltzmann constant and Evalute the constant in the wien displacement law
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 11.9 m/s at the top of the incline, FIND the minimum radius you can use for the semi-circular hump
An electric field applies a force of 9.11x10^-16 N to an electron emitted from a cathode of a cathode ray tube at essentially zero velocity
Two Polaroids are aligned so that the light passing through them is a maximum. At what angle should one of them be placed so that the intensity is subsequently reduced by half?
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