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A spring is attached to an overhead beam. If you put a mass of 170 gram on it and it proceeds to stretch a distance of 7 centimeter, determine what is the spring constant? Using the similar spring, you apply a force that stretches the spring a distance of 20 centimeter. Calculate the magnitude of the downward acceleration? (Use units of meters/kg/seconds.)
The world's longest suspension bridge is the Akashi Kaikyo Bridge in Japan. How much longer is the bridge on a warm summer day (27.0° C) than on a cold winter day (-5.00° C)
An electric motor with a 2.7-hp output drives a machine with an efficiency of 35%. What is the energy output of the machine per second
A 540 g ball swings in a vertical circle at the end of a 1.2 m-long string. When the ball is at the bottom of the circle, What is the speed of the ball at that point
Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total ene..
A spherical pot of hot coffee contains 0.75 L of liquid (essentially water) at an initial temperature of 95?C. The pot has an emissivity of 0.60, Calculate the coffee's rate of heat loss by radiation
find the minimum thickness for constructive interference of visible light with a wavelength of 595 nm.
careful measurements of local variations in the acceleration due to gravity can reveal the locations of oil deposits.
Two kids decide to race from one end of a 20 meter long moving sidewalk to the other and back. Phillip runs on the sidewalk at 2.0 meters/sec (relative to the sidewalk). Who wins the race
As a person walks, the femur (upper leg bone) slides in a socket in the hip, Find the frictional force on the bone in the hip joint
a thin layer of oil of refractive index 1.18 is spread on the surface of water n1.33. if the thickness of the oil is
A 52% efficient device uses chemical energy to generate 570J J of electric energy. How much chemical energy is used
what is the least count of a measurement instrument and how is it related to the number of significant figures of the
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