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Four protons are placed at the corners of a square of side length a = 1.0 angstrom. The square is in the +x, +y quadrant of the xy plane with one corner at the origin. Find the electric field magnit
(a) If the player comes to rest at third base, how much work was done on the player by friction? (b) What was the coefficient of kinetic friction between the player and the ground?
Find the magnetic force on the electron when the earth's field has a horizontal component of 0.250 G and dips 60.0° below the horizontal (values typical in California).
The primary coil of a certain transformer has an inductance of 3.75 H and a resistance of 36.2 olms. If the primary coil is connected to an ac source with a frquency of 38.6 Hz and a voltage of 71.
An infinitely wide and an infinitely thin insulating plane has a uniform surface charge density of 3.5 nC/m^2. What are the strength and direction of the electric field at:
The x-component of a velocity vector that has an angle of 32 degrees to the +x-axis has a magnitude of 6.0 m/s. what is the magnitude of the velocity? what is the magnitude of the y-component of th
A capacitor is to be made of two parallel plates of gold, separated by a sheet of plastic. The plastic sheet is 1 mm thick, and its dielectric constant is 2. The capacitance of the parallel-plate ca
If the coefficient of static friction between the box and the plank is 0.29, what is the maximum amount the spring can be stretched and the box remain at rest?
A step up transformer is connected to a generator that is delivering 141 V and 110 A. The ratio of the turns on the secondary to the turns on the primary is 1150 to 4. What current flows in the seco
Find the tension in each of the two ropes supporting a hammock if the first one is at an angle of 20.9° above the horizontal and the second is at an angle of 35.2° above the horizontal.
A grating with 396 lines/mm is illuminated with light of wavelength 343 nm. What is the angular separation between the two m = 2 bright spots? A) 7.79° C) 23.6° E) 32.9° B) 15.8° D)
A telescope consists of a mirror with radius of curvature 4.4 m and an eyepiece. If an astronomer would like the telescope to have a magnification of 186, what focal length eyepiece should he use?
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with
You swing a 3.16-kg bucket of water in a vertical circle of radius 0.860 m. At the top of the circle the speed of the bucket is 3.20 m/s; at the bottom of the circle its speed is 7.00 m/s. Find the
The grating is illuminated with a beam of white light containing the 400 nm to 700 nm wavelength range. The angular width of the gap between the first order spectrum and the second order spectrum is
For two slits, the third-order maximum for 400nm light occurs in the same spot as the second-order maximum for which other visible wavelength?
A 0.335 m string is clamped at both ends. If the lowest standing wave frequency in the string is 326 Hz, what is the wave speed?
Oxygen gas having a volume of 900 cm3 at 45.0°C and 1.01 multiplied by 105 Pa expands until its volume is 1650 cm3 and its pressure is 1.06 multiplied by 105 Pa. (a) Find the number of moles of
A string, 0.260 m long, vibrating in the m = 6 harmonic, excites an open pipe, 0.880 m long, into its third resonant frequency. The common frequency of the string and the pipe is closest to:
The manufacturer wishes to produce a desktop version of the machine. This requires reducing the size of the drum to a length of 30 cm and a diameter of 8.0 cm. The electric field at the drum surface
The electric field just above the surface of the charged drum of a photocopying machine has a magnitude E of 2.3 105 N/C. The drum has a length of 41 cm and a diameter of 13 cm. What is the total c
determine the following. (a) the salmon's acceleration m/s2 upward (b) the magnitude of the force F during this interval N
Give the signs for the velocity and the acceleration of the elevator after the button has been pressed but before the elevator has stopped.
An airboat with mass 4.36 x 102 kg, including the passenger, has an engine that produces a net horizontal force of 8.20 102 N, after accounting for forces of resistance. (a) Find the acceleration of