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A 82 kg student sits on a chari which is soley supported by a solid 0.92 meter long steel rod 0.98 cm in diameter. To the nearest micron (millionth of a meter) what is the change in length of the rod produced by the students weight?
What least horsepower must a motor have to be able to drag a 280 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
A 21.5 g bullet strikes a 0.650 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.30 x 10^3 N/m and sets it into vibration with an amplitude of 21.5 cm. What was the speed of bullet before impact if the bullet and bl..
The total electric flux from a cubical box 40.0cm on a side is 2280 Nm^(2)/C. What charge is enclosed by the box?
A student moves a box of books by attaching a rope to the box and pulling with a force of 90.0 N at an angle of 30.0 degrees. Find the acceleration of the box
A 1030 Kg car going 3.4m/s through a parking lot hits and sticks to the bumper of a stationary 1140 kg car. Find the speed of the joined cars immediately after the collision
A 1035 kg car carrying four 78 kg people travels over a rough "washboard" dirt road with corrugations 5.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude while its speed is 16 km/h. The car now ..
A gardener pushes a box of tools across a driveway by applying a 22.5- N force that pushes downward at an angle of 23.1 o, How much work is done if the box moves 2.55 m in the horizontal direction
An iron bolt of mass 79.0 g hangs from a string 32.4 cm long. The top end of the string is fixed, Find the tension in the string and Find the magnetic force on the bolt
A 1500-kg car moving east at 28.00m/s collides with a 1720 kg car moving south at 15 m/s and the two cars stick together.
A 0.015 kgrecord with a radius of 15 cm rotates with an angular speed of 33 1/3 rpm. What is the fly's angular momentum
Iodine-131 has a half-life of 8 days. A 2-gram sample of at first pure iodine-131 is stored for 32 days. How various grams of iodine-131 remain in the sample afterwards.
A hoop rolls without slipping down a ramp that is inclined at 35 degrees above the horizontal. Calculate the length of the ramp
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