A 0.500-kg block, attached to a spring with length 0.60 m and force constant 40.0 N/m. is at rest with the back of the block at point A on a frictionless, horizontal air table ( Fig. P7.69 ). The mass of the spring is negligible. You move the block to the right along the surface by pulling with a constant 20.0-N horizontal force, (a) What is the block’s speed when the back of the block reaches point B . which is 0.25 m to the right of point A ? (b) When the back of the block reaches point B . you let go of the block. In the subsequent motion, how close does the block get to the wall where the left end of the spring is attached?
A 0.500-kg block, attached to a spring with length 0.60 m and force constant 40.0 N/m. is at rest with the back of the block at point A on a frictionless, horizontal air table ( Fig. P7.69 ). The mass of the spring is negligible. You move the block to the right along the surface by pulling with a constant 20.0-N horizontal force, (a) What is the block’s speed when the back of the block reaches point B . which is 0.25 m to the right of point A ? (b) When the back of the block reaches point B . you let go of the block. In the subsequent motion, how close does the block get to the wall where the left end of the spring is attached?
A 0.500-kg block, attached to a spring with length 0.60 m and force constant 40.0 N/m. is at rest with the back of the block at point A on a frictionless, horizontal air table (Fig. P7.69). The mass of the spring is negligible. You move the block to the right along the surface by pulling with a constant 20.0-N horizontal force, (a) What is the block’s speed when the back of the block reaches point B. which is 0.25 m to the right of point A? (b) When the back of the block reaches point B. you let go of the block. In the subsequent motion, how close does the block get to the wall where the left end of the spring is attached?
Statistical thermodynamics. The number of imaginary replicas of a system of N particlesa) cannot be greater than Avogadro's numberb) must always be greater than Avogadro's number.c) has no relation to Avogadro's number.
Lab-Based Section
Use the following information to answer the lab based scenario.
A student performed an experiment in an attempt to determine the index of refraction of glass.
The student used a laser and a protractor to measure a variety of angles of incidence and
refraction through a semi-circular glass prism. The design of the experiment and the student's
results are shown below.
Angle of
Incidence (°)
Angle of
Refraction (º)
20
11
30
19
40
26
50
31
60
36
70
38
2a) By hand (i.e., without using computer software), create a linear graph on graph paper
using the student's data. Note: You will have to manipulate the data in order to achieve a
linear function.
2b) Graphically determine the index of refraction of the semi-circular glass prism, rounding your
answer to the nearest hundredth.
Use the following information to answer the next two questions.
A laser is directed at a prism made of zircon (n = 1.92) at an incident angle of 35.0°, as shown in
the diagram.
3a) Determine the critical angle of zircon.
35.0°
70°
55
55°
3b) Determine the angle of refraction when the laser beam leaves the prism.
Chapter 7 Solutions
University Physics with Modern Physics (14th Edition)
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