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1. Did the data points of your graph of velocity versus time fall nearly on a straight line? What does this imply about the acceleration of the carriage? Why? (Hint: Suppose that you measure the slope at two different places on the straight line. What can you say about the two triangles in the figure? Hence, what can you say about the values of Δv/Δt at the two different times?)
2. Was your value of the acceleration close to the accepted value? What specific defects in the apparatus or imperfections in the procedure might have contributed to the error?
3. If the carriage of the free-fall apparatus were dropped from a balloon at a moderately high altitude, it would not continue to accelerate at 980 cm/s2 all the way to the ground. Why not? What happens when the velocity becomes large?
When viewed in a spherical mirror, the image of a setting sun is a virtual image. The image lies 12 cm behind the mirror. (a) What is the focal length of the mirror
Suppose you have the following intermediate (i.e., important figures may be incorrectly stated) experimental results: L = 0.739 ± 0.026 m , f1 = 36.48 ± 1.82 Hz , T = 5.28 N (exact) . What is the linear mass density of the string (without uncertainty..
The intensity 18m from a source of sound is measured to be 10^-4W/m^2. Determine the intensity of the sound in decibels
A ray of light is incident from the air onto a flat diamond surface at an angle of 35 degrees. If the refractive index of diamond for red light is 2.410 and for blue light is 2.445, what is the angle among the refracted rays in the diamond?
A source emits sound wavesof frequency 200 Hz, which move through still air at 340 m/s. Find the frequency heard by the listener
Mike is a 70 kg pole-vaulter. He falls froma peak height of 5.9 m after pole vaulting over a crossbar set at that height. He lands on a thick mat. What average force was exerted by the mat on Mike during this impact
A child pulls a friend in a little red wagon with constant speed. How much work does the child do on the wagon
a u.s. 20 gold piece has a mass of 33.44 grams and displaces 1.935 cm3 of water. if the coin is known to consist of
A small ball of 53 grams is suspended from a string of length 86 centimeters and whirled in a circle lying in the horizontal plane. If the string makes and angle of 31 degrees with the vertical, find out the centripetal force experienced by the ball...
You have decided to make a large cooler to store meat. Calculate the net rate of heat flow per second out of the cooler if the interior temperature is 5 C and the exterior temperature can be 45 C
a sinusoidal wave travelling in the -x direction to the left has an amplitude of 20.0 cm a wavelength of 35.0 cm and a
A thick, vertical iron pipe has an inner diameter of 0.065 meter. A thin aluminum disk, heated to a temperature of 85oC, has a diameter that is 3.9 x 10-5 meter greater than the pipe inner diameter. Evaluate the temperature of the aluminum disk
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