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A man in search of his dog drives first 10 mi northeast, then 26 mi straight south, and finally 1 mi in a direction 30° north of west. What are the magnitude and direction of his resultant displ
Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. A person is sitting at an angle off to the side of a diffraction horn that has a width D of 0.0831 m.
An object of mass X, on a pendular arm, will reach the bottom of the swing at the same time as a similar object dropped next to it from the same height.
A homemade capacitor is assembled by placing two 9 in. pie pans 7 cm apart and connecting them to the opposite terminals of a 9 V battery. A. Estimate the capacitance, in Farads
If it takes a boat 200 seconds to directly cross the river from east to west, find the direction the boat was pointed to cross the river, the resultant velocity of the boat as it crossed the river,
While it is connected to the battery, the space between the plates is filled with a material of dielectric constant 3. After the dielectric is added, the magnitude of the charge on the plates and th
If a neutron (a particle with the mass of the proton but no electric charge) is brought in from infinity and placed at the point (-3.00 m, 2.00 m, 5.50 m), how does the electric potential energy of
A point charge of -2.00 μC is located in the center of a spherical cavity of radius 6.50 cm inside an insulating charged solid. The charge density in the solid is ρ = 7.35 X 10-4 C/m. Calculate
When a capacitor has a charge of magnitude 80μC on each plate the potential difference across the plates is 16 V. How much energy is stored in this capacitor when the potential difference across
Charge of uniform surface density (0.20nC/m^2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2.0 m.
Two infinitesimally small point charges of +2.0 µC each are initially stationary and 5.0 m apart. (a) How much work is required to bring them to a stationary position 2.0 m apart? (b) 2.0 mm a
A helium nucleus (charge +2e) moves through a potential difference V = -0.60 kV. Its initial kinetic energy is 2.90x10^-16 J. What is its final kinetic energy?
A jetliner is moving at a speed of 197 m/s. The vertical component of the plane's velocity is 51.4 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
Two identical particles, each with a mass 2.0 mg and a charge of 25 nC, are released simultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when
If a bullet with a mass of 0.008 kg is moving with a velocity of 454 m/s and it hits a stationary block with a mass of 8.44 kg and passes through the block with a final velocity of 160 m/s and the c
A beam of light emitted in a pool of water from a depth of 60.5 cm. How far away, relative to the spot directly above it, must it strike the air-water interface in order that the light does not exit
A cylindrical cable with 2.11 x 10-8 m resistivity carries a current of 1300 A. There is a potential difference of 2.0 x 10-3 V between two points on the cable that are 0.24 m apart. What is the radiu
A thunderstorm drops half an inch of rain (which is about 1.27cm) on Chicago which covers are area of about 228 square miles (1 mile = 1.609 km) If a typical raindrop is considered to be a sphere wi
Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.832. What is the resistance of the copper wire? Take the resistivity of copper to be 1
A group of hikers hears an echo 4.00 s after shouting. If the temperature is 18.0°C, how far away is the mountain that reflected the sound wave?
Two copper wires, one three times the diameter of the other, have the same current flowing through them. If the thinner wire has a drift speed v1, and the thicker wire has a drift speed v2, how many
A tuning fork vibrating at 514 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork when waves with a frequency of 483 Hz reach the release point? T
A 0.10 g plastic bead is charged by the addition of 1.0 x 1010 excess electrons. What electric field (strength and direction) will cause the bead to hang suspended in the air?
A slide projector needs to create a 96.0cm high image of a 1.80cm tall slide. The screen is 306 cm from the slide. A) What focal length does the lens need? Assume that it is a thin lens. B) How far sh
The total electric flux through the Gaussian surface is 7.8 x 106 N m2/C. If one of the charges is -14.3 micro-Coulombs and the magnitude of the electric force between them is 2.46 Newtons, what is