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A concave shaving mirror has a radius of curvature of27.0 cm. It is positioned so that the(upright) image of a man's face is 3.50 times the size of the face. How far is the mirror from the face?
cm
The air inside a bicycle tire pump has 221 joules of work done on it as 60.1 joules of heat is conducted away from it
A force of magnitude 610.0 N stretches a certain spring by 0.230 N from its equilibrium position. How much elastic potential energy is stored in the spring when it is stretched 0.300 m from its equilibrium position
A solar concentrating heat exchanger system directs sunlight onto a long straight pipe. The pipe receives heat from sunlight at the rate of 153.616 Btu/hr per foot of length, find the rate of entropy production in this solar concentrator
A neutral sodium atom has an ionization potential of X=5.1eV. Sodium has mass number A=23. What is the minimum speed of a free electron that can ionize a sodium atom in the ground state?
Assume a typical hummingbird has a lifespan of 4.0 years and an average heart rate of 1300 beats per minute. (a) Calculate the number of times a hummingbird's heart beats in its life, and express it in scientific notation.
Diagnostic ultrasound of frequency 4.50 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
A ship's mast reaches to a height of 15 meters above the surface of a 10-meter-deep lake. When the sun is 30° above the horizon, how long will the shadow of the mast be on the bottom of the lake?
A sealed box is placed inside a sealed container. A pressure gage attached to the box reads 60.0 kPa, what is the absolute pressure inside the box
In a very busy off-campus eatery one chef sends a 239-g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter from left to right at 1.79 m/s. n what direction does the delectible dish move, if it moves at all
A horizontal aluminum rod 4.5 cm in diameter projects 5.5 cm from a wall. A 910 kg object is suspended from the end of the rod. find the vertical deflection of the end of the rod
A 2.27-kg block (M1) and a 5.87-kg block (M2) are connected by a massless string. Applied forces, F1 = 10.1 N and F2 = 4.83 N, act on the blocks, What is the net force acting on M1
A flight controller determines that an airplane is 30.0mi south of him, Half an hour later the same plane is 30.0mi north west of him, What is the magnitude of its velocity during this time
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