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On her return trip, she drives half the time at 35 and half the time at 55. How long does it take Julie to complete the trip to Grandmother's house?
A man weighing 720 and a woman weighing 400 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman ?
A bowling ball (mass = 5.0 kg, radius = 0.11 m) and a billiard ball (mass = 0.40 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational forc
Light with a wavelength of 633 nm illuminates a single slit and a diffraction pattern of light is viewed on a screen that is 1.50 m behind the hole. The distance between the m = 1 and m = 2 minima i
The water is fired from the hose at a height of 3.0 meters to a height of 30.0 meters. What is the minimal magnitude and velocity of the water leaving the hose in order to reach the fire?
A child slides down a slide with a 31 incline, and at the bottom her speed is precisely one third what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic fri
A vertical scale on a spring balance reads from 0 to 245 rm{N}. The scale has a length of 11.0 rm{cm} from the 0 to 245 rm{N} reading. A fish hanging from the bottom of the spring oscillates vertica
by accident, 20g of aluminum at 275 degree celcius is dropped to a 25g of water at 80 degree celsius. how much steam is produced?
You drag a block across a table while a friend presses down on the block. The coefficient of friction between this table and this block is 0.4. The vertical component of the force exerted by the ta
Even though we measured it, why isn't it necessary to know the exact voltage across the full length of the wire in the potentiometric method
Two violin strings are tuned to the same frequency, 294 Hz. The tension in one string is then decreased by 1.5 %. What will be the beat frequency heard when the two strings are played together?
A spring of spring constant 3.00 X 10^4 N/m is between a rigid beam and the output piston of a hydraulic lever. An empty container with negligable mass sits on the input piston.
A sphere of mass 2 kg and diameter of 10 cm is fired with the initial speed of 8 micrometres per second directly toward the center of a second sphere with mass of 500 kg and diameter of 1 m, which i
Soft drinks are commonly sold in aluminum containers. to an order of magnitude, how many such containers are thrown away or recycled each year by U.S. consummers?
An ideal gas is confined within a closed cylinder at a pressure of 2.026 × 105 Pa by a piston. The piston moves until the volume of the gas is reduced to one-ninth of the initial volume. What
a 200 g ball is tied to a string. it is pulled to an angle of 8 degrees and released to swing as a pendulum. a student with a stopwatch finds that 10 oscillations take 12 s. how long is the string?
A closely wound rectangular coil of 80 turns has dimensions of 25 cm by 40 cm. The plane of the coil is rotated from a position where it makes an angle of 37 degrees with a magnetic field of 1.10 T
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