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To build some of the islands in the arabian sea, massive boats suck sand from the sea floor and propel it into a massive pile (in interesting shapes). If 100 kg of sand is shot horizontally out of the boat every 2 seconds at a speed of 40 m/s, what constant force must the engines provide to keep the boat in place?
Wile E. Coyote and the Roadrunner are fictional cartoon characters. The premise of the cartoon is that Wile E. Coyote unsucessfully tries to catch the very fast, What is the velocity of the combined system of two wagons
Calculate the classical momentum of a neutron traveling at 0.997c, neglecting relativistic effects
A ball of moist clay falls 19.8 m to the ground. It is in contact with the ground for 19.5 ms before stopping. What is the average acceleration of the clay during the time it is in contact with the ground
The velocity of an object undergoing linear drag and no other forces can be described as: v(t)=v0e^t/?, Calculate the position x(t), and acceleration a(t) of the particle as a function of time t
Let us assume that the winter consists of 150 days in which the outside temperature is 0C. This will give the typical number of "heating degree days" observed in a winter along the northeastern US seaboard.
A 0.540 kg football is thrown with a speed of 15.5 m/s. What is the magnitude of the impulse delivered to the ball by the receiver
A 0.20-kg billiard ball travelling at a speed of 15.00 m/s strikes the side rail of a pool table at an angle of 60 degrees. If the side rail rebounds at the equal speed and angle what is the change in its momentum?
A 2.00-nF capacitor with an initial charge of 5.06 µC is discharged through a 1.28-k? resistor. What is the maximum current in the resistor
A piece of string 5.30 m long has a mass of 14 g. What must the tension in the string be to make the wavelength of a 128 Hz wave 120 cm.
A cylinder of mass 14.0 kg rolls without slipping on a horizontal surface. find the rotational kinetic energy about its center of mass
A human eyeball is about 2.1 long, and the pupil has a maximum diameter of about 7.5 . What is the "speed" of this lens
A uranium-fuelled research reactor has a cubic shape with sides of length 1.0 m. estimate the power out of the reactor in units of watts
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