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An elastic cord is 66cm long when a weight of 76N hangs from it but is 81cm long when a weight of 160N hangs from it. What is the "spring" constant of this elastic cord?
Determine the magnitude and direction of the acceleration of the system.
An automobile company displays a die-cast model of its first car, made from 9.35 kg of iron. To celebrate its hundredth year in business, a worker will recast the model in solid gold from the origi
A galvanometer with a coil resistance of 11.0 and a full-scale current of 0.150 mA is used with a shunt resistor to make an ammeter. The ammeter registers a maximum current of 4.00 mA. Find the equ
A constant horizontal force then acts on the box, and accelerates it to the right. It is observed that it takes the box 6.5 seconds to travel 48 meters. What is the magnitude of the force?
Two tuning forks are held side by side. If one vibrates at 440 Hz and the other vibrates at 444 Hz, what will be the frequency of the resulting beat?
An archer pulls her bowstring back 0.438 m by exerting a force that increases uniformly from zero to 243 N. What is the equivalent spring constant of the bow?
During this acceleration, what is her weight and what does the scale read? What does the scale read when the elevator descends at a constant speed of 2.0 m/s?
What is the magnitude of the emf induced between the two sides of the shark's head?
An air puck of mass of 0.026kg is tired to a string and allowed to revolve in a circle of radius 1.3m on a frictionless horizontal surface. the other end of a string passes through a hole in the ce
50-g ball traveling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.50 ms, what is the averag
A chimpanzee sitting against his favorite tree gets up and walks 78.1 m due east and 52.2 m due south to reach a termite mound, where he eats lunch. (a) What is the shortest distance between the tr
What is the initial speed of the apple . b- At what time after the arrow launch should the apple be thrown so that the arrow hits the apple.
What must be the minimum initial speed of the dart so that the combination makes a complete circular loop after the collision?
which I don't think thats possible, since the Guassian surface has to be surrounding the surface right? Or can the Guassian surface be inside the actual surface?
A plane is flying horizontally with speed 233 m/s at a height 5710 m above the ground, when a package is dropped from the plane. The acceleration of gravity is 9.8 m/s2 .A second package is thrown
What constant torque is required to bring it up to an angular speed of 390 in a time of 8.50 , starting from rest? What is its final kinetic energy?
Determine a formula for the total resistance of a spherical shell made of material whose conductivity is sigma and whose inner and outer radii are r_1 and r_2. Assume the current flows radially outw
If I have 2 containers and I dissolve 50 grams of NaCl in one and 50 grams of LiCl in the other, which container would provide your aluminum block with a greater buoyancy force (assume both complete
=A 1050 kg car carrying four 80 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maxi
A 315-Ω resistor is connected in series with a parallel-plate capacitor across the terminals of a 60.0-Hz ac generator. When the gap between the plates is empty, its capacitance is 2.65 µ
A car rests on a slanted ramp leading into car-transporter trailer. The car's brakes and transmissions locks are released; only a cable attached to the car and to the frame of the trailer prevents
The following table gives the reactance and rms voltage across the elements of a series RCL circuit:
The moment of inertia of the wheel about this shaft is 5.50 {rm{ {rm kg}}} cdot {rm{{rm m}}}^{rm{2}} Compute the angular acceleration of the wheel.
A swimming pool has dimensions 30.0 m multiplied by 13.0 m and a flat bottom. When the pool is filled to a depth of 2.30 m with fresh water, what is the force caused by the water on the bottom? On