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Riders on a Ferris wheel move in a circle with a speed of 4.50. As they go around, they experience a centripetal acceleration of 2.40 . What is the diameter of this particular Ferris wheel?
The spring first slows the car down to rest and then launches it back in the direction from which it came but with a speed of 3.00 m/s. Find the work done by friction in this process.
When you shine the laser pointer and the sample's emission spectrum directly on the grating at the same time, you notice that the fourth peak for the unknown wavelength exactly corresponds with the
A new material for possible use in photovoltaic cells has an energy gap (Eg) of 1.06 eV. What is the maximum wavelength in meters that would work for light on such a photo-cell?
Calculate the first and second order angles for light of wavelength 675 nm for a diffraction grating contains 8,000 lines/cm. i. First, what is the separation between the slits
A 2.0 mm diameter gold ball is charged to +56 nC. What fraction of its electrons have been removed? The density of gold is 19,300 kg/m3.
A wave on a string is described by D(x,t) = (2.00cm)( sin[ (12.57rad/m)x - (638 rad/s)t ] ), where x is in meters and t is in seconds. The linear density of the string is 5.00g/meter. What are: a) t
A cosmic ray muon with the same charge as an electron and a mass of 1.9 10-28 kg is moving directly down toward Earth's surface with a speed of 4.7 107 m/s. What is the magnitude and direction of th
All four wires carry the same magnitude of current I = 10.7 A in the directions indicated. Find the magnetic field at point P, the midpoint of the top side of the square. we need to find magnitude a
A parallel-plate capacitor has circular plates of 8.90 cm radius and 1.70 mm separation. (a) Calculate the capacitance.
The wires are 0.10 m apart, and the sum of the magnetic force and gravitational force on the upper wire is zero. Find the current in the wires. ( Neglect Earth's magnetic field.)
As part of a safety investigation, two 1900kg cars traveling at 24m/s are crashed into different barriers. Find the average forces exerted on (a) the car that hits a line of water barrels and takes
(a) Two forces are given as A= 2N and B= 3N. The angle between the two forces = 110 degrees. Find the magnitude of the resultant of the two forces. (b) FInd the angle, corresponding to the resultant
He can accelerate from rest to a top speed of 7.9 m/s in 7.30 seconds. (a)Where does the ball land? ? m, at an angle of ? degrees off the 1st baseline. (b)Does he catch the ball? No? Not enough info
A series combination of a 9 k resistor and an unknown capacitor is connected to a 12 V battery. One second after the circuit is completed, the voltage across the capacitor is 8 V. Determine the capa
A parallel-plate air-filled capacitor having area 51 cm2 and plate spacing 4.0 mm is charged to a potential difference of 300 V. Find the following values. (a) the capacitance (b) the magnitude of the
An ideal diatomic gas, with rotation but no oscillation, undergoes an adiabatic compression. Its initial pressure and volume are 1.07 atm and 0.160 m3. Its final pressure is 2.53 atm. How much work
Two containers are at the same temperature. The first contains gas with pressure p1, molecular mass m1, and rms speed vrms1. The second contains gas with pressure 2.0p1, molecular mass m2, and avera
An Ideal monatomic gas undergoes a reversible expansion from specific volume, v(1), to specific volume, v(2). Calculate the change in entropy if the process is isothermal?
How much work is done (a) by the block on the spring and (b) by the spring on the block? (c) What is the value of h0? (d) If the block were released from height 2h0 above the spring, what would be t
A bicycle is racing around on a horizontal surface in a circle of radius 26 m. The force exerted by the road on the bicycle makes an angle of 25 degrees with the vertical. What is its speed? If the
An Ideal monatomic gas undergoes a reversible expansion from specific volume, v(1), to specific volume, v(2). Calculate the change in entropy if the expansion is isobaric.
What is the blood resistivity if a 8.6V potential difference causes a 230 uA current through the blood in the vein?
A parallel-plate capacitor has circular plates of 8.90 cm radius and 1.70 mm separation.What charge will appear on the plates if a potential difference of 122 V is applied?
When a current flows in an aluminum wire of diameter 4.35 mm, the drift speed of the conduction electrons is 2.57 × 10-4 m/s. What is the electron current in the wire? The conduction electron de