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If the electric field between the plates has a magnitude of 2.7×10^4N/C , what is the potential difference between the plates? Express your answer using two significant figures.
When wearing his glasses, he looks not at actual objects but at the virtual images of those objects formed by his glasses. Suppose he looks at a 10-cm-long pencil held vertically 1.5 m from his glas
The only force acting on a 1.8 kg body as it moves along the positive x axis has an x component Fx = - 6x N, where x is in meters. The velocity of the body at x = 3.0 m is 8.0 m/s. (a) What is the v
What is the magnitude of the acceleration of an electron that is 4.0 cm from the center of the bead? What is the direction of the acceleration of an electron that is 4.0 cm from the center of the be
Find the work done per pound of water during the expansion. Find the heat transfer per pound of water during the expansion. Find the value of the enthalpy of the water after expansion.
Vector A has a magnitude of 6.00 units, vector has a magnitude of 8.00 units, and the dot product A·B has a value of 39. What is the angle between the directions of A and B ?
Two circuits are constructed using identical, ideal batteries (emf = E ) and identical lightbulbs (resistance = R). If each bulb in circuit 1 dissipates 3.30 W of power, how much power does each bul
Water flows at 0.20L/s through a 8.0-m-long garden hose 2.5cm in diameter that is lying flat on the ground. The temperature of the water is 20 degrees C. What is the gauge pressure of the water wher
The overall displacement of the four darts has the xy components (-245, 125). (a) What is bx? cm (b) What is cy? cm What are the magnitude and angle (relative to the positive x axis) of the overall
Find the specific volume using both a) the IG model, b) the van der Waals model. What is the error incurred by modeling the Blob as an IG? as a van der Waals gas?
How much energy is stored in this capacitor? How many positive ions are there on the outside of the membrane? Assume that all the ions are singly charged (charge +e).
The potential difference across a cell membrane is -71.7 mV. If the membrane's thickness is 10.8 nm, what is the magnitude of the electric field in the membrane? Assume the field is uniform.
River Pascal with a volume flow rate of 5.2×105L/s joins with River Archimedes, which carries 1.00×106L/s , to form the Bernoulli River. The Bernoulli River is 140m wide and 30m deep. Wh
(i) Find the satellite's weight at that altitude. (ii) Find the gravitational force exerted by the earth on the satellite at that altitude.
Half of the person's weight is supported by the crutches, the other half is supported by the normal forces acting on the soles of the feet. Assuming that the person is at rest, find the magnitude of
Nanowires can be fabricated from ZnO. ZnO has the wurzite structure. How many atoms are there in the conventional unit cell?
A wood cube 0.32m on each side has a density of 750 kg/m3 and floats levelly in water. What is the distance from the top of the wood to the water surface? Express your answer using two significant
The piston mass is 30 kg, its area is .003m^2, and the ambient pressure is 100 kPa. The pin is then removed and the H2O expands rapidly and adiabatically. What is the final state of the H2O?
A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 4.10cm2 and a large one of cross-sectional area 260cm2 . If this lift is designed to raise a 3500- car, what minimum f
A) An energetic photon of wavelength 5.1 nm scatters off an electron at rest at an angle of 63 degrees. What is the wavelength of the scattered photon? B) What is the longest wavelength possible?
A metal wire 1.3mm in diameter and 2.1m long hangs vertically with a 6.1-kg object suspended from it. If the wire stretches 1.4mm under the tension, what is the value of Young's modulus for the met
A thin, uniformly charged disk, with charge q and radius R, is located on the xy plane centered at the origin. Data: q= 3.1*10^-6 C R= .175 m Calculate the electric potential on the z axis, at z =
When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky dive
A 1320-kg car is traveling with a speed of 18.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 42.5 m?
A total of 4.27·106 electrons are placed on an initially uncharged wire of length 3.41 m. What is the magnitude of the acceleration of a proton placed at a point in space, which is a perpend