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What is the magnitude of the electric force of attraction between an iron nucleus ({q = + 26e}) and its innermost electron if the distance between them is 1.5 times 10^{ - 12} ,{rm{m}}?
An electron accelerated from rest through a voltage of 460 V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 30 cm, what is the magnitude of the
A major league pitcher can throw a baseball in excess of 46.5 m/s. if a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 17.0 m away from t
At the turning point how far is the second cyclist from the campground? What direction must the second cyclist head during the last part of the trip?
A 13 turn circular loop of wire has a diameter of 0.66 m. The plane of the circular loop makes an angle of 63 to the Earth's magnetic field. In 0.157 s the coil is flipped at a location where the
One end of a 15.0-m-long rubber tube, with a total mass of 1.00kg, is fastened to a fixed support. A cord attached to the other end passes over a pulley and supports an object with a mass of 5.00 kg
An object, mass 2.96 kg, moves in a horizontal circle with a radius of 3.80 m. The object has an intial velocity of 32.6 m s-1. If the kinetic coefficient of friction between the object and the surf
A 11.0 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 151 N/m. The bullet becomes embed
Discuss thermometers, absolute temperature, thermal joints in the bridges, thermostat in the houses.
Neglecting air resistence, what is the horizontal distance traveled by this package? Answer in units of m.
A horse canters away from its trainer in a straight line, moving 119m away in 15.0s. It then turns abruptly and gallops halfway back in 5.0s. what is the average speed?
A 15-{rm cm}-diameter CD has a mass of 22 g. What is the CD's moment of inertia for rotation about a perpendicular axis through its center?
A person lifts a 950 N box by pushing it up an incline. If the person exerts a force of 350 N along the incline, what is the mechanical advantage of the incline?
An artillery shell is fired with an initial velocity of 300 m/s at 64.0° above the horizontal. To clear an avalanche, it explodes on a mountainside 47.0 s after firing. What are the x and y comp
A wire 2.00 m long and 1.00 mm in diameter has a resistance of 0.5000 ohms. A second wire 4.00 m long and 2.00 mm diameter has twice the resistivity of the first wire. Find the resistance of the se
A Carnot engine performs work at the rate of 380 kW while using 710 kcal of heat per second.If the temperature of the heat source is 590, at what temperature is the waste heat exhausted?
A highway curve with radius 800 is to be banked so that a car traveling 56.0 will not skid sideways even in the absence of friction. At what angle should the curve be banked?
A 15.0 kilo-ohm resistance and a capacitor connected in series and then a 12.0V potential difference is suddenly applied them.The potential difference across the capacitor raises to 5.00V in 1.30 m
How much time will it take for the police officer to reach the speeder, assuming that the speeder maintains a constant speed?
The coefficient of static friction between a certain cylinder and a horizontal floor is 0.46. If the rotational inertia of the cylinder about its symmetry axis is given by I = 0.5MR2, then what is
The person in the middle weighs 235 N, and the tensions in each rope are 200 N. What is the weight of the staging?
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the same as that of the spider's thread?
A 0.31kg mass attached to a spring undergoes simple harmonic motion with a period of 0.72s. What is the force constant of the spring?
What is the acceleration of two falling sky divers (mass 119.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight?
Ben sees a lightning bolt strike a building that he knows to be 980 meters away. Assume that the speed of sound in air is 340 m/s. How long before ben hears the thunder?