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A 3280 kg demolition ball swings at the end of a 17.1 m cable onthe arc of a vertical circle. At the lowest point of the swing, the ball is moving at a speed of 2.72 m/s. Determine the tension in the cable.
971-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car
Elm Street has a pronounced dip at the bottom of a steep hill before going back uphill on the other side. Sitting on the scale while the car is parked gives a reading of 588 N. Analyze your data, using a graph, to determine the dip's radius of curv..
a 6.0-cm-diameter horizontal pipe gradually narrows to 4.0cm. when water flows through this pipe at a certain rate
if the battery in a circuit is taken out and the current becomes zero. how does the current remain zero without the battery
Three capacitors in series, with capacitance 3.0micro Farads,5.0 and 6.0 are connected in series to a 21.0V independent voltagesource. what charges are on the plates of each capacitor
A 0.40-kilogram ball has a speed of 3 meters per second and collides with a stationary 4-kilogram block, what is the total momentum of the ball and block after the collision
A guitar string has a length of .8 m. If the wave speed ofthe spring id 560m/s, what is the frequency of the sixth harmonic
A 420-g ball is attached to one end of a horizontal cord of length L = 2 m and the other end is fixed, what will be its speed at the lowest point of its path
An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 5500V. It then passes between two horizontal plates 6.5cm long and 1.3 cm apart that have a potential difference of 250V. At what angle wil..
Some believe that the positions of the planets at the time of birth influence the newborn. Calculate the gravitational force exerted on the baby by the planet Jupiter (m=1.9*10^27 kg) at its closest approach to the earth
The resultant displacement has a magnitude of 170 cm and is directed at an angle of 65.0° to the positive x axis. Find out the magnitude and direction of the second displacement.
A 168 kg polar bear standing 1.2 meters tall walks onto a floating sheet of ice 0.305 m thick. What is the surface area of the ice floe
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