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A convex mirror with a focal length of 0.25 m forms a 0.081 m tall image of an automobile at a distance of 0.23 m behind the mirror.
a) How far from the mirror is the car located?
A 45dB sound wave strikes an eardrum whose area is4.2multiplied by10-5m2. How much energy is absorbed by the eardrum per second
1300-L rigid tank contains 16 kg of refrigerant-134a vapor at 320 kPa. The refrigerant is cooled until the temperature reached -14oC. Determine the internal energy change for this process
q1. a 78.9 kg man steps off a platform 4.57 m above the ground. he keeps his legs straight as he falls but at the
The position of an object is given as a function of time as x(t) = (-3.00 m/s)t + (1.00 m/s2)t2. What is the average speed of the object between t = 0.00 s and t = 2.00 s
A car goes round a flat curve at a speed of 32 ms-1. If the radius of the curve is 200 m, find the minimum value for the coefficient of friction so that the car can go around the curve without skidding.
4.60g of nitrogen gas at 22.0?C and an initial pressure of 3.30atm undergo an isobaric expansion until the volume has tripled. A) How much heat energy is transferred to the gas to cause this expansion
A meat baster consists of a squeeze bulb attached to a plastic tube. While the bulb is squeezed and free, with the open end of the tube under the surface of the basting sauce.
A uniform, solid disk is acted on by a tangential force F, as shown. The disk is free to rotate about its central axis without friction. What is the net torque on the disk
An archer fires an arrow horizontally by pulling the bow string back a distance of 0.47 m before releasing the arrow which has a mass of 0.030 kg, how much work does the archer do on the system
A rock of mass 32kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 274N. What is the magnitude of the acceleration of the rock.
Force F = (-1.0 N) + (1.0 N) acts on a particle with position vector r = (5.0 m) + (5.0 m). What is the torque on the particle about the origin
Two small particles have charges Q1 = +2.5 ?C and Q2 = ?5.5 ?C. what is the distance between the particles
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