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A potential difference is applied between the electrodes in a gas discharge tube. In 1.3 s, 2.8 1016 electrons and 1.1 1016 singly charged positive ions move in opposite directions through a surface perpendicular to the length of the tube. What is the current in the tube?
Two in-phase loudspeakers are some distance apart. They emit sound with a frequency of 1 kHz. What beat frequency do you observe
Two identical resistors of R0 = 30 ? are connected head-to-tail. Write an expression for the new length in terms of the old length L.
Illustrate what is the gauge pressure at the upper face of the block? what is the gauge pressure at the lower face of the block? what is the mass of the block?
A satellite has a mass of 101 kg and is located at 2.03 106 m above the surface of Earth. What is the magnitude of the gravitational force on the satellite
An iron tower in is 317 meters tall on a cold day (T = -9.9 degrees Celsius). What is its height of the tower on a hot day
A ball thrown into the air lands on the same horizontal level, 31 m away, and 2.6 s later. Find the magnitude of the initial velocity
q1. eight identical non-interacting particles are placed in a cubical box of sides l 0.2 nm.find the lowest energy of
question1a puck of mass m1 76.0 g and radius r1 4.40 cm glides across an air table at a speed of 1.50 ms. it makes a
When landing after a spectacular somersault, a 40.0 kg gymnast decelerates by pushing straight down on the mat. Calculate the force she must exert
Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 40 km away.
The mass of a string is 1.00 10-3 kg, and it is stretched so the tension in it is 120 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?
An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.00-T field with his fingers pointing in the direction of the field.
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