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A 8.00 kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical oscillations having a period of 2.90 s. Find the force constant of the spring.N/m
A positron (q = +e) moves at 4.6 107 m/s in a magnetic field of magnitude 0.50 T. The magnetic force on the positron has magnitude 1.5 10-12 N. What is the angle between the velocity and the field
A typical photovoltaic cell delivers 4.0×10?3W of electric energy when illuminated with 0.11W of light energy. What is the efficiency of the cell
4.3 moles of Hydrogen gas initially at Standard Temperature and Pressure. The gas is heated to a temperature of 49°C while being kept at constant pressure. What is the new volume of the gas after it is heated
Two football players are initially 2m apart. At the same instant they accelerate towards each other, Draw a picture. Define your coordinate system
An 8.50 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. Find the magnitude of the acceleration of the particle
A distant quasar is found to be moving away from the earth at 0.90 c. What is the recessional speed of the quasar as measured by astronomers in the other galaxy
A bicycle break pad is pushed against the moving rim of the wheel with a force of 80 N and the dynamic coefficient of friction is 2.2, What is the shear modulus of the rubber that the pad is made from
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
An airplane is cruising at an altitude of 10 km. Model the air as an ideal fluid to find the speed of the stream of air flowing through the leak
Find out the magnitude of the impulse imparted to golf ball?
Messages reach at random to be sent across a communications link with a information rate of 9600 bps. The link is 70 percent utilized, and the average message length is 1000 octets.
Two blocks of mass m and 75 kg are connected via a light cord over a massless, frictionless pulley as shown in the attached figure. If the 75 kg block starts 2.0 m above the floor and takes 3.0 s to reach the floor when released from rest, what..
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