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If 250 moles of gas are compressed to 0.75 of an original volume at a constant temperature or 295 K, how much heat must have gone into the environment?
The lifetime of the first excited state of a hydrogen atom is about 10 ns. What is the uncertainty in energy of the photon emitted when the atom returns to its ground state
A skateboarder shoots off a ramp with a velocity of 5.8 m/s,directed at an angle of 54° above the horizontal. The end ofthe ramp is 1.3 m above the ground. Let the x axis beparallel to the ground, the +y direction be verticallyupward, and take as ..
Use the uncertainty principle to show that if an electron were present in the nucleus (r ˜ 10 - 15m), its kinetic energy (use relativity) would be hundreds of MeV. (Since such electron energies are not observed, we conclude that electrons are not ..
Ramon has a coherent light source with wavelength 579 nm. What is the minimum width of the screen if Ramon wants to display four interference maxima
A wheel of mass m = 16kg and radius r = 0:5m is connected to a motor that causes it to attain rotational speed of w = 20rads^-1 in 10s, What is the average torque applied to the wheel by the motor
A skateboarder shoots off a ramp with a velocity of 6.6m/s directed at an angle of 58 degrees above the horizontal. The end of the ramp is 1.2m above the ground. Let the x axis be parallel to the ground,+y direction be vertically upward, and take ..
An air-traffic controller observes two airplane on his radar screen. The first is at altitude 850 meter, horizontal distance 19.8 kilometer and 24.0 degree south of west. Calculate the distance between the two airplane
A person takes a trip, driving with a constant speed of 95.5 km/h, except for a 24.0-min rest stop. The person's average speed is 65.4 km/h. How far does the person travel
The moment of inertia of a 0.949 kilogram bicycle wheel rotating about its center is 0.131 kg x m2. Find the radius of this wheel, suppose the weight of the spokes can be neglected
You apply a constant force F= (68.0N)i+(36.0N)j to a 420kg car as the car travels 58.0m in a direction that is 240.0 counterclockwise from the +x-axis. How much work does the force you apply do on the car
If she were to hold the book 58 cm away, what type of corrective lens would she need to use to clearly see the print? What is the focal length of the lens?
A rod of mass m =0.59 kg and length L=35cm rotates about an axis during one end that is perpendicular to the rod. Compute the rotational inertia of this object. If the object is accelerated from rest with a torque of 1.2 N/m about the same axis, how ..
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