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The uniform meterstick above has an object with mass 800 grams hanging at the 15cm mark and an object with mass 350 grams at the 70cm mark. It balances horizontally on a pivot placed at the 35cm mark. What is the mass of the meterstick?
A robot probe drops a camera off the rim of a 337 meter high cliff on Mars, where the free-fall acceleration is 3.7 m/s2. Obtain the velocity with which it hits the ground
A railroad car of mass 3.5*10^4 kg moving at 2.50 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. What is the speed of the three coupled cars after the c..
In a certain solar house, energy from the Sun is stored in barrels filled with water. In a particular winter stretch of five cloudy days, 1.37 x 106 kcal is needed to maintain the inside of the house at 22.4oC. what volume of water is required
a 2.90 x 10 2 n force is pulling an 75.0-kg refrigerator across a horizontal surface. the force acts at an angle of
An archeologist on a dig finds a fragment of an ancient basket woven from grass. Calculate the age of the basket
A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far
A 1500 kg car is headed directly for a brick wall when the driver realizes the danger and slams on the brakes. The car's initial speed is 32 m/s, Determine how far the car travels while skidding to a stop
a 30uf capacitor initially charged to 20uf is discharged through a 2.2kohms resistor. how long does it take to reduce
The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long and has a mass of 450g. What tension is needed to tune this string properly
A mass attached to a spring is lifted 10cm and then let go at which point the mass bobs up and down completing 4 oscillations in 10 sec. When does the mass first reach its maximum speed and what is that speed?
Compute the linear momentum and angular momentum of a Frisbee of mass 0.159 kg if it has a linear speed of1.85 m/s and an angular velocity of46.0 rad/s. Treat the Frisbee as a uniformdisk of radius 12.5 cm.
A whistle of frequency 580 Hertz moves in a circle of radius 59.0 centimeter at an angular speed of 18.0 rad/s. Find the lowest and the highest frequencies heard by a listener a long distance away
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