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A projectile of mass m is launched from the origin at speedv0 and angle theta. It is attached to the origin with aspring (spring constant k) and equilibrium length zero. Show the equations of motion and solve for x(t) and y(t).
A river flows south with a velocity of 20 km/h. A boat has a maximum speed of 50 km/h in still water. In the river, at maximum throttle, the boat heads due west. What are the resultant speed and direction of the boat?
A runner of mass m = 39kg and running at 3.1m/s runs as shown and jumps on the rim of a playground merry-go-round which has a moment of inertia of 372 kg•m2 and the radius of 2 meters. Assume the merry-go-round is initially at rest, what is its final..
Two small nonconducting spheres have a total charge of 89.0?C , Q1
A cylinder with a piston contains 0.300 moles of oxygen at 2.20×10^5 pa and 340 K . The oxygen may be treated as an ideal gas. Find the internal-energy change during the final cooling
A beam of light in air strikes a slab of glass (n= 1.50) and is partially reflected and partially refracted. Find the angle of incidence
he density of free electrons in gold is 5.90x10^28 m^-3. The resistivity of gold is 2.44x10^-8 ohms.m at a temperature of 20 C, what is the drift velocity of the electrons in the wire
Two students are on a balcony 19.2 m above the street. One student throws a ball vertically downward at 14.9 m/s; What is the velocity of each ball as it strikes the ground
The liquid-drop model of the atomic nucleus suggests high-energy oscillations of certain nuclei can split the nucleus into two unequal fragments plus a few neutrons, Calculate the electric potential energy (in electron volts) of two spherical fragm..
for an initial velocity of 15 m/s and a launch of 55 degrees, where will the projectile strike the side of the hill
A horizontal force of 100 N pushes a 10 kg block up a frictionlessincline that makes an angle of 25° with the horizontal. find the normal force that the incline exerts on the block
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
In a 280-turn automobile alternator, the magnetic flux in each turn is ?B = 2.50 multiply.gif 10-4 cos ?t, where ?B is in webers, ? is the angular speed of the alternator, Determine the maximum emf in the alternator
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