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The current in an electro magnet connected to a 240 V line is 14.5A.At what rate must cooling water pass over the coils if the water temperature is to raise by no more than 7.50C ?
At an outdoor market a bunch of bananas is set to oscillatory motion with amplitude of 20.0 cm on a spring with a force constant of 16 N/m.
A cannon is launched at an angle of 45.00 and the cannon ball lands 301 m away. How long was the cannon ball in the air
The displacement of a wave traveling in the positive x-direction is D(x,t)=(3.5cm)sin(3.2x-132t), where x is in m and t is in s . Part A What is the frequency of this wave? Part B What is the wavelength of this wave? Part C What is the speed of this ..
An organ pipe is open at one end and closed at the other. The pipe is 1.5 m long. Assume the speed of sound in the pipe is 340 m/s. The lowest harmonic frequency for this pipe is ________Hz.
A sample contains radioactive atoms of two types, A and B. Initially there are five times as many A atoms as there are B atoms. obtain the half life in hours
A 3.1kg block of wood sits on a table. A 3.0g bullet, fired horizontally at a speed of 370m/s, What is the speed of the block immediately after the bullet exits
The work function for Tin is 4.42 eV. Ultraviolet light with \lambda =50 nm is shone upon a Tin electrode
a disk with a rotational inertia of 5.00 kg m2 and the radius of 0.25 m rotates on a frictionless fixed axis perpendicular to the disk, the maximum angular acceleration of the disk is
Medical ultrasound. Ultrasound with = 5.8is used in a medical imager. Find the wavelength in air, with sound speed 343. Find the wavelength in muscle tissue
A window of a car is found to be covered with 0.6cm of ice. If the area of the window is 1 m2, and the ice is at -12 degrees Celsius, what is the minimum heat required to melt all the ice
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. In a standard treatment, 2.0 kg of beef receives 4.5 kGy of radiation in 48 s. (A) How much energy is deposited in the beef in kJ? (B) What is the a..
A 22.0 kg child slides down a slide that makes a 37.0° angle with the horizontal. At what angle from the horizontal is this force directed
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