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A pump is to lift 18.0 kg of water per minute through a heightof 3.60 m. What output rating (watts) should the pump motorhave?
A ball is thrown off a cliff, 100 meters tall, with an initial velocity of 5.00 m/s, which is purely horizontal direction. How long before the ball hits the ground
question1a car moves along a road in such a way that the distance x travelled in a time t is given byx a bt 3where a
A small hollow tube is glued to a speaker in a vertical manner. The speaker is set to play a single tone such that it vibrates vertically with simple harmonic motion. Find an expression for the frequency at which rattling begins
A cylinder of gas at room temperature (20°C) has a pressure p1. To what temperature in degrees Celsius would the temperature have to be increased for pressure to be 2.7p1.
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.793 m and 2.97 kg, what is its rotational kinetic energy
You are driving south on a highway at 28 (approximately 63 ) in a snowstorm. Estimate the speed of the snowflakes relative to the car
The top of a tower much like the leaning bell tower at Pisa, Italy, moves toward the south at an average rate of 1.4 mm/y, what is the average angular speed of the tower's top about its base
As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at a speed of v0. They are on an air-hockey table, find the velocity of disk 2 at that moment
Two blocks m1 = 9.8 kg and m2 = 4.0 kg are connected by a homogeneous rope that has a mass of mr = 1.32 kg. What is the magnitude of the tension in the rope
A cub scout makes a simple microscope by placing two converging lenses of +18.0 D at opposite ends of a 27.9-cm-long tube. What is the tube length of the microscope
If the atom could be enlarged to the size of a football field, and the electrons were represented by gnats, how large would the nucleus be
What is the distance between the particles at this time? The Coulomb constant is 8.95755 × 109 N • m2/C2, the elemental charge is 1.6721 × 10-19 C, and the acceleration due to gravity is 9.8 m/s2.
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