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Two runners approaching each other on a straight track haveconstant speeds of 4.50m/s and 3.50m/s, respectively, whenthey are 100m apart. How long will it take for the runners tomeet, and at what position will they meet if they maintain these speeds?
A sign (mass 1700kg ) hangs from the end of a vertical steel girder with a cross-sectional area of 0.013m^2, What is the stress within the girder
A sound wave is travelling trough a fresh water pool with a speed of 1482 m/s. what is the pressure amplitude of the wave
A fire hose ejects a stream of water at an angle of 35.8 ° above the horizontal. how far from a building should the fire hose be located to hit the highest possible fire
The pilot of an airplane notes that the compass indicates a heading due west. The plane's speed relative to the air is 150 km/h. Find the velocity of the airplane relative to the ground
A bicycle tire rolls down a 25 m hill and crashes into a car door. how fast did the tire collide with the door
A small sphere whose mass is 7.00E-03 g. carries a charge of 2.00E-08 C. Calculate the surface charge density (in coulombs/meter^2) for the sheet
An ideal spring is used to fire a 15.0-g block horizontally. The spring has a spring constant of 40 N/m, The kinetic energy of the pellet as it leaves the spring is
If there is a section of the hose where the diameter decreases to 1.93 cm, what is the speed of the water in this section
A proton moves perpendicular to a uniform magnetic field at a speed of 2.00 107 m/s, Determine the magnitude and direction of the field
A grinding wheel is initially at rest. A constant external torque of 47.2 N· m is applied to the wheel for 18.8 s, Find the frictional torque, which is assumed to be constant
To make a bounce pass, a player throws a 0.60-kgbasketball toward the floor. find the magnitude of the impulse delivered to it by the floor
If a curve with a radius of 87 is perfectly banked for a car traveling 67 , illustrate what must be the coefficient of static friction for a car not to skid when traveling at 84 ?
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