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A hobo is sitting on the tracks at downtown Disney, staring at his reflection in the mirror which is 10 m away. He notices that his reflection is very much diminished, with a magnification of m = 0.2.
(a) At what position is the hobo's image?
(b) What is the radius of curvature of the mirror? What type of mirror is it?
Water flows at 0.950 m/s from a hot water heater, through a 450-kPa pressure regulator. What's the flow speed in this pipe
An 87.6 g lead ball is dropped from rest from a height of 5.60 m. The collision between the ball and the ground is totally inelastic. Assuming all the ball's kinetic energy goes into heating the ball, find its change in temperature.
a tiny sphere of mass 7.90 microg and charge ?2.80 nc is initially at a distance of 1.74 microm from a fixed charge of
If a Joe pulls a 37-kg crate at a 0.62 m/s^2 using a horizontal strap, when 250N of friction acts on it, what is the Tension in the strap
The corners of the Indianapolis speedway are banked at 9.2 and have a radius of 256 meter. find coefficient of static friction between tires and roadway
The electric field between the plates of a paper-separated capacitor is 8.18×104 . The plates are 1.90 apart, and the charge on each plate is 0.750. Determine the area of each plate
A wheel has a radius of 0.5 m. If the wheel rotates on its axis through an angel of 46 degrees, what distance does a point on the rim of the wheel move
liquid storage cans such as gasoline cans generally have capped vents. what is the purpose of the vents and what
What is the impulse of a 5 N force acting for 3s? 4Ns 15Ns
A 4.75kg block starts at the top of a 13.6m long incline that has an angle of 10 degree to the horizontal. How much Kinetic Energy was lost in the collision
questionan anchored barge that extends across a canal by distance d 30 m and into the water by distance b 12 m. the
A 0.430 kg block is attached to a horizontal spring that is at its equilibrium lenght, and whose force constant is 20.0 N/m. The block rest on a frictionless surface. A 0.0500 kg wad of putty is thrown horizontally at the block, hitting it with a ..
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