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A banked circular highway curve is designed for traffic moving at 85 km/h. The radius of the curve is 158 m. Traffic is moving along the highway at 48 km/h on a rainy day. What is the minimum coeff
Suppose the apple was 3.90 meters above ground before falling, while Newton's head was 90 centimeters above ground. How long did it take the apple to hit Newton after falling off?
An electron is moving through a magnetic field whose magnitude is 88 x 10-5 T. The electron experiences only a magnetic force and has an acceleration of magnitude 38 x 10+13 m/s2. At a certain inst
To what distance x can a person who weighs 444 N walk on the overhanging part of the plank before it just begins to tip?
A car traveling east at 43.1 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25.0 m/s in 3.10 s. (a) What is the magnitude and direction of the car's accelerat
How much work (in electron volts) is done by the electric force as a proton is brought from infinity, where it is at rest, to the "surface" of a copper nucleus?
Two point charges, separated by 1.5 cm have charge values of 2.0 micro C and -4.0 micro C respectively. What is the value of the electrostatic force between them?
A toy train rolls around a horizontal 1.5--diameter track. The coefficient of rolling friction is 0.12. What is the magnitude of the train's angular acceleration after it is released? (found)
Calculate the moment of inertia about a central axis (in units of kg m^2) for:
A small spherical insulator of mass 8 x 10 kg and change +0.600 micro Coulomb is hung by a tin wire of negligible mass. A charge of -0.900 micro Coulomb is held 0.150m away the sphere and directly
An artificial satellite circling the Earth completes each orbit in 102 minutes. Find the altitude of the satellite in meters
A 12.0 g bullet is fired horizontally into a 108 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring of constant 143 N/m. The bullet becomes embe
Plane leaves the airport in Galisto and flies 164 km 68 degrees east of north and then changes direction to fly 177 km at 48 degrees south of east, after which it makes an immediate emergency landi
Determine the total energy of the system. Determine the equation describing the motion of the mass, assuming that at t = 0, x was a maximum and that t in seconds.
A sample of a particular radioisotope is placed near a Geiger counter, which is observed to register 160 counts per minute. Eight hours later the detector counts at a rate of 10 counts per minute.
A 0.127 kg baseball is thrown with a speed of 15.1 m/s. It is hit straight back at thepitcher with a ?nal speed of 16.5 m/s. What is the magnitude of the impulse delivered to the ball?
A tuning fork oscillates at a frequency of 441 {rm Hz} and the tip of each prong moves 2.0 mm to either side of center. Calculate the maximum speed. Calculate the maximum acceleration of the tip of
A nuclear power plant operates at 75 percent of its maximum theoretical (Carnot) efficiency between temperatures of 580oC and 310oC.
What will be the frequency of oscillation if the fish is pulled down 3.4 cm more and released so that it oscillates up and down?
The amount of heat that an engine rejects to the cold reservoir is 4 times the amount of work that it does. What is the efficiency of the engine?
By how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people (70W/person )? Assume the room is initially at 293 K .
A 20.0 L tank contains 0.225 kg of helium at 18.0 C. The molar mass of helium is 4.00 g/mol. (a) How many moles of helium are in the tank? (b)What is the pressure in the tank, in Pascals and in atm
What is the difference in path lengths from each of the slits to the location of the center of a third-order bright fringe on the screen?
Whole blood has a surface tension of 0.058 N/M & a density of 1050kgm-3.what weight can whole blood rise in a capillary blood vessel that has radius 2.0 * 10-6 if the contact is zero?
A cannon tilted upward at = 25 fires a cannonball with a speed of 95 m/s. At that instant, what is the component of the cannonball's velocity parallel to the ground?