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A string has a tension of 19.1 N. A wave travels on the string with a frequency of 65 Hz and a wavelength of 0.90 meters. What is the linear mass density of the string?
An electric fan is running on HIGH. After fan has been running of 13.2 minutes, the LOW button is pushed. The fan slows down to 98 rad/sec in 1.83 seconds. What was the initial angular speed of the fan
A small current element at the origin has a length of 1.2 mm and carries a current of 3.9 A in the +z direction. Find the magnitude and direction of the magnetic field due to this current element at the point (0, 3.7 m, 2.0 m).
A 300-m-wide river flows due east at a uniform speed of 4.4 m/s. A boat with a speed of 7.6 m/s relative to the water leaves the south bank pointed in a direction 25o west of north. How long does it take for the boat to cross the river
A spring has a spring constant of k = 7.500N/m. If the spring is displaced 0.5500 from its equilibrium position, what is the force that the spring exerts
A 2.00 m brass rod with a 1.00 mm diameter is used as a spring by stretching the rod. If the tensile modulus of brass is 9.10 1010 N/m2, then the spring constant of the rod is
A compressive force of 2.7×104N is exerted on the end of a 24-cm-long bone of cross-sectional area 3.9cm2. By how much will the bone shorten
Astronaut Ann wishes to travel from one side of her spaceship to the other side so she pushes herself away from a wall, What is Ann's speed relative to Bob as she drifts across the spacehip
Objects with masses of 180 kg and a 480 kg are separated by 0.410 m. Find the net gravitational force exerted by these objects on a 58.0-kg object placed midway between them
Light of wavelength 550. nm in air is found to travel at 1.96x10^8 m/s in a certain liquid. Determine the frequency of the light in air
An unknown capacitor is charged by a 100-V source through a 1 M? resistor. determine the capacitance of the capacitor
Suppose each of the object's three dimensions is increased by a factor of 3 without changing the material od which the object is made. By what factor will the density change
A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube.
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