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Consider the following situation:
There is a metal rectangular plate with a hole in the center. The hole is just big enough to pass a tennis ball through.
As this plate heats up what would happen to the size of this hole?
Would it be easier or more difficult to pass the tennis ball through when heated?
Your initial answer should be substantial (100 words minimum).
A block of mass 0.35 kg can slide over a frictionless horizontal surface. It is attached to a spring whose stiffness constant is k = 14 N/m, What is its speed when the extension is 13 cm
The core of a star collapses during a supernova, forming a neutron star. find the neutron star's angular velocity in revolutions per second, given the core's was originally 1.0 revolution per 30 days
A guitar string produces 4 beats per second when sounded with a 350-Hz tuning fork and 9 beats per second when sounded with a 355-Hz tuning fork. What is the vibrational frequency of the string
a carnot engine whose low-temperature reservoir is at 17.7degc has an efficiency of 29.2. by how much should the
Discuss how the issue has been addressed historically.
An alien spacecraft is flying overhead at a great distance as you stand in your backyard. You see its searchlight blink on for 0.190. The first officer on the spacecraft measures that the searchlight is on for 12.0.
In a CRT tube, electrons are accelerated by a 20,000 V potential difference between the electron gun (the cathode) and the positive metal mesh 5.00 cm away. How much time does it take the electron to reach the wire mesh
A photon having 27 keV scatters from a free electron at rest. What is the maximum energy that the electron can obtain
a solid insulating sphere of radius a 3.1 cm is fixed at the origin of a co-ordinate system as shown. the sphere is
Sketch and describe a floe control loop.
You are designing a lathe motor, part of which consists of a uniform cylinder whose mass is 90 kg and whose radius is 0.40m that is mounted so that it turns without friction on its axis, which is fixed.
A futuristic design for a car is to have a large disk-like flywheel within the car storing kinetic energy. The flywheel has mass 370 kg with a radius of 0.50 m and can rotate up to 520 rev/s. Assuming all of this stored kinetic energy could be transf..
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