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You measure the length of the same side of a block five times and find: b=12.0, 11.7, 12.2, 11.9 and 11.8 mm. What is the best estimate for the uncertainty in b? The amount of average 11.92 is wrong.
A block is launched up a frictionless ramp that makes an angle of 35 degree to the horizontal. If the block's initial speed is 2.2 m/s, determine how far up the ramp does it slide
consider an insulating rigid box divided by a movable partition into two subsystems volumes va and vb each filled with
The RC circuit has 4 kΩ and C= 2 µF. The capacitor is at Voltage V at t=0, when the switch is closed. Find how long does it take the capacitor to discharge 9 percent of its initial voltage
A two stage reciprocating air compressor works between pressure limits of 1 bar and 20 bar. The inlet temperature is 150C and the polytrophic index is 1.29. Inter cooling between stages reduce the air temperature back to 150C. Both stages have the..
How to find the position and height of an image
Suppose we have a rocket that has an acceleration of 8.92 m/s2 in the x direction. What would the acceleration in the y direction of an astronaunt be inside the rocket. Assume that the astronaunt is on Earth and that there is only an x (horizontal) a..
The intensity of the sound wave from a jet airplane as it is taking off is 85 W/m2 at a distance of 4.0 m. What is the intensity of the sound wave that reaches the ears of a person
An object whose weight is 100 Ibf experiences a decrease in kinetic energy of 500 ft. Ibf and an increase in potential energy of 1600 ft. Ibf. The initial velocity and elevation of the object, each relative to surface of the earth, are 50 ft/s and 40..
An electron passes through a point 2.71 cm from a long straight wire as it moves at 36.3% of the speed of light perpendicularly toward the wire
Three moles of an ideal monatomic gas expands at a constant pressure of 2.90atm ; the volume of the gas changes from 3.00×10?2m3 to 4.40×10?2m3. Calculate the amount of work the gas does in expanding
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
The acceleration due to gravity, g, is constant at sea level on the Earth\'s surface. Derive an expression for the acceleration due to gravity
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