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A transformer with 250 turns in its primary is used to obtain the X-ray tube voltage of 40 kV, how many turns should there be in the secondary winding?
Peter noticed a bug crawling along a meter stick and decided to record the bug's position in five-second intervals. After the bug crawled off the meter stick
The vertical displacement of a string is given by y(x,t) = (6.00mm) cos[(3.25m to the power of (-1)) x - (7.22 s to the power of (-1))t].
Relative Motion - A boat travels up a river a distance d and then comes back to the origin
Assume the sun is mostly composed of hydrogen atoms. Assume the mass of the sun is 1.89*10^30kg, and the mass of a hydrogen atom.
In Euclidean three-space, let p be the point with coordinates (x,y,z) = (1,0,-1). Consider the following curves that pass through p:
A particle with a charge of -5.90 * 10^-9 C is moving in a uniform magnetic field B(vector) = -(1.25 T) k (hat).
How do I find the resultant of the three displacement vectors in the drawing by means of the component method?
Use P, N, and Z for positive (upward), negative, and zero, respectively. Separate the letters for velocity and acceleration with a comma.
If Displacement vector A points due east and has a magnitude of 2.00 km. Displacement vector B points due north and has a magnitude of 3.75 km
Consider a pair of forces, one having a magnitude of 20 N, and the other having a magnitude of 12 N. What maximum net force is possible for these two forces?
Two blocks, of weights 3.6 N and 7.2 N, are connected by a mass-less string and slide down a 30 degree inclined plane
If the average power required to operate the bus is P, how long could it operate between stops?
A 2-kg ball is moving with a constant speed of 5 m/s in a horizontal circle whose radius is 50 cm. What is the acceleration of the ball?
A 20.0 kg floodlight in a park is supported at the end of a horizontal beam of mass 20.0 kg and length L that is hinged to a pole
A light beam composed of red and blue light is incident upon a rectangular glass plate. The light emerges into the air from point P as two separate beams
A body of mass 10 kg is suspended by a light inextensible string from the roof of a train. Calculate the tension in the string and its inclination
Teh maximum power of a particular horse is 1 hp. With what speed can this horse pull a sled on level ground if the weight of the sled with its load.
A diffraction grating produces a first-order bright fringe that is 0.0934 m away from the central bright fringe on a flat screen.
A photon having 27 keV scatters from a free electron at rest. What is the maximum energy that the electron can obtain?
White light strikes a diffraction grating (540 lines/mm) at normal incidence. What is the longest wavelength that forms a third-order maximum?
A diffraction grating has 2200 lines/cm. What is the angle between the first-order maxima for red light ( = 690 nm) and blue light ( = 410 nm)
When a grating is used with light that has a wavelength of 621 nm, a third-order maximum is formed at an angle of 18.0°
What does the acronym VSAT stand for? What diameter antenna would you expect to be used at the retail outlets? (Give a range, in meters.)
Assume that the antenna emits energy with cylindrical wave fronts. (The actual antenna pattern is much more complicated).