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The yellow car accelerates uniformly for the entire distance, finally catching the blue car just as the blue car comes to a stop. 1) How fast is the blue car going 1.8 seconds after it starts?
Identical point charges of +1.3 oC are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, such that it causes the potentials at the empty cor
How long does it take the blue ball to reach its maximum height? What is the maximum height the blue ball reaches?
The volume of the air slowly decreases to 0.002 m3 in a quasi-equilibrium process as the specific internal energy of the air decreases by 260 kJ/kg. Neglecting friction between the piston and the c
A hollow metal sphere has 7cm and 11cm inner and outer radii, respectively. The surface charge density on the inside surface is -200nC/m^2. The surface charge density on the exterior surface is +20
An elevator is able to raise a 1,000 kg mass to a height of 40 m in 15 s. a) How much work does the elevator do? b) What is the elevator's power output?
Find sqrt(w^2), the rms angular speed of the dumbbell about a single axis (taken to be the x axis), assuming that the dumbbell is lined up on the z axis and is in equilibrium at temperature T.
What is the rms speed v0 of molecules in air at 0*C? Air is composed mostly of N2 molecules, so you may assume that it has molecules of average atomic mass 28.0 * 1.661 * 10^-26 kg.
Use the uncertainty principle to obtain the uncertainty in the momentum of a particle of mass, m, confined to a cube of side a. What happens to the pressure exerted by particles as they are compress
A Carnot engine operates with an efficiency of 23.0% when the temperature of its cold reservoir is 274 K. Assuming that the temperature of the hot reservoir remains the same, what must be the tempe
Consider a monatomic gas of particles each with mass m. What is vrms = sqrt(v^2), the root mean square (rms) of the x component of velocity of the gas particles if the gas is at an absolute temperat
What are the (a) magnitude and (b) angle from a quarter after the hour to half past, the (c) magnitude and (d) angle for the next half hour, and the (e) magnitude and (f) angle for the hour after th
Two 2.50 cm X 2.50 cm plates that form a parallel-plate capacitor are charged to 0.706 . a. what is the potential difference across the capacitor if the spacing between the plates is 1.20mm ?
Then you illuminate the slits with your new toy and find on the screen that the tenth bright fringe is 4.91 cm away from the central bright fringe (counted as the zeroth bright fringe). What is your
What is the work done by the field on the electron?
A bullet is fired through a board 14.9 cm thick, with a line of motion perpendicular to the face of the board. If the bullet enters with a speed of 381 m/s and emerges with a speed of 219 m/s, what
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.68 105 Pa and the pipe radius is 2.90 cm. At another point 2.50 m higher, the pressure is 1.25 105
(a) Find the power the toaster converts when it is at its operating temperature. . W (b) What is the final temperature of the heating element?
If both collars weigh .75 lb, determine the normal force which the curved rod exerts on one collar at the instant theta=120 degrees. Neglect friction.
Suppose the temperature of the cosmic background were 1.3 K. What would be the wavelength of maximum intensity? What would be the frequency of the EM wave at maximum intensity? What would be the tem
An air gap capacitor is charged up to 10 V and then disconnected. If a material is added to the gap between the plates and the voltage drops to 3.33 V, what is the dielectric constant of that materi
The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.27 ?. a) What length is required? b) What will be the diameter of the wire?
A 9.00-V battery delivers a current of 1.22 A to the lightbulb filament of a pocket flashlight. (a) How much charge passes through the filament in 1.70 min?
A 2.0-nF parallel plate capacitor with a sheet of mylar (k = 3.1) filling the space between the plates is connected to a 90 V battery. While it is still connected to the battery, the sheet of mylar