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The bumper behaves like a spring with constant 4.90 multiply.gif 106 N/m and is compressed 3.56 cm as the car is brought to rest. What was the speed of the car before impact, assuming no energy is l
Find the magnitude of the force required to stretch the spring by 7.00 cm from its unstretched length.
Considering that the distance between the pitcher's mound and home plate is 18.4 m, can you rule out the claim based on your answer to part (a)?
Light shines through a single slit whose width is 5.5 × 10-4 m. A diffraction pattern is formed on a flat screen located 4.0 m away. The distance between the middle of the central bright fringe
A capacitor C = 2.88x10^-6 F is charged by a 579 V battery, and then connected in series to a rheostat (variable resistor) and a 3.26 mH coil. Initially the rheostat is set to 0? and the circuit osc
The magnitude J of the current density in a certain wire with a circular cross section of radius R = 2.01 mm is given by J = (3.15 × 108)r2, with J in amperes per square meter and radial dista
What is the ratio of the acceleration due to gravity that you measure compared to what you would have measured had the density been 5500 kg/m3 everywhere? (Hint: Think of this as a superposition prob
In a particular semiconductor device, an oxide layer forms a barrier 0.6 nm wide and 9 eV high between two conducting wires. Electrons accelerated through a 4-V potential approach the barrier. (a)
The galactic magnetic field in some region of the interstellar space has a magnitude of 1.00 x 10-9 T. A particle of interstellar dust has a mass of 11.5 µg and a total charge of 0.240 nC. How
The magnetic field strength in the spectrometer is 1.1 T. What is the minimum value of the potential difference through which these ions must be accelerated so that the separation between them, afte
A stationary particle of charge q = 2.4 × 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 2.6 × 103 W/m2. Determine the maximum magnitude of the (a) electri
A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +3.3. What is the magnification when the convex side is used as a mirror, the object rem
What is the equilibrium angular displacement of the wire from vertical if the horizontal magnetic field is 0.04 T and the current is 0.20 A?
A concave mirror (f = 54 cm) produces an image whose distance from the mirror is one-third the object distance. Determine (a) the object distance and (b) the (positive) image distance.
Construct a ray diagram for this arrangement. (Do this on paper. Your instructor may ask you to turn in this diagram.)
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 5.50 cm thick (vertical dimension) and is covered with a layer of water (n = 1.33) 11.0 cm deep. Calculate the ap
A contact lens is made of plastic with an index of refraction of 1.54. The lens has an outer radius of curvature of +1.95 cm and an inner radius of curvature of +2.47 cm. What is the focal length of
Find the Grand partition function of a 2D classical system of electrons with energy dispersion law E(p) = (p^2)/2m. The temperature is T and chemical potential is mu.
A frictionless inclined plane with angle of inclination theta is fixed to the floor of a train car accelerating in the +x direction with constant acceleration a. a block of mass m starts at the top
Explain, using either time-dilation or length contraction arguments. If they want to make the trip in 28 y what distance would the person travelling at nearly the speed of light measure (in light ye
Explain why a capacitor acts as a short circuit at high angular frequencies and as an open circuit at low angular frequencies?
If there were enough deuterium mixed in with the hydrogen in your spectrum tube to produce observable spectral lines, is the resolution of the spectrometer you used in this experiment high enough to
An object floats on water with 84% of its volume below the surface. The same object when placed in another liquid floats on that liquid with 70% of its volume below the surface. Determine the densit
When the cylinder reaches the bottom of the ramp, what is its total kinetic energy? When the cylinder reaches the bottom of the ramp, what is its rotational kinetic energy?
A series RCL circuit includes a resistance of 281, an inductive reactance of 860, and a capacitive reactance of 606. The current in the circuit is 0.328 A. What is the voltage of the generator? Note