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a bicyclist of mass 54 kg puts all his weight on each downward-moving pedal as he pedals up a steep road. Take the diameter of the circle in which the pedals rotate to be .31 m, and determine the magnitude of the maximum torque he exterts in the process.
Why must a thermom be calibrated? You have a glass bulb thermom with no markings on it, and a second one marked in degrees Celsius. Describe how you would calibrate the unmarked thermom.
what is the maximum speed the ball can have. imagine there are no other forces acting on the particle.
find the net rate of radiation by a pot at 35.7°C that has been placed in a -23.9°C freezer. The pot's surface area is 0.111 m2 and its emissivity is 0.655.
A diving board of length 3{rm m} is supported at a point 1 {rm m} from the end, and a diver weighing 550 {rm N} stands at the free end. The diving board is of uniform cross section and weighs 295 {rm N}. Find out the magnitude of the force at the ..
The coefficient of kinetic friction is 0.400. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
Find out the friction force on the box
A charge of +378 C is fixed at the center of a square that is 0.64 m on a side. How much work is done by the electric force as a charge of +1.8 C is moved from one corner of the square to any other empty corner?
An object has a kinetic energy of 310 J and a momentum of magnitude 22.1 kg · m/s. Find the mass of the object
A converging lens can be used as a lighter (on a sunny day). If you want to use it to light a match, where should you put the match, What is the radius of the mirror
While standing on a bridge 45m above the ground, you drop a stone from rest. When the stone has fallen 4.90m, you throw a second stone straight down. What initial velocity should you give the second stone if they are both to reach the ground at th..
The first puck is deflected 38 below the +x axis and moves off at 0.37 m/s. Find out the speed and direction of the second puck after the collision.
What is the magnitude of the magnitic filed.
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