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A 5.50 kg ornament is hanging by a 1.40 m wire when it is suddenly hit by a 3.00 kg missile traveling horizontally at 12.0 m/s. The missile embeds itself in the ornament during the collision.
What is the tension in the wire immediately after the collision?
A simple pendulum makes 143 complete oscillations in 2.80 min at a location where g = 9.80 m/s2. Find the period of the pendulum
A step-up transformer for long-range transmission of electric power is used to create a potential difference of 1.0921 x 10^5 V across the secondary. How many turns are in the primary
A 124-? resistor and a 163-? resistor are both connected in parallel across a power supply. If the potential drop across the 124-? resistor is 12 V, what is the exact potential drop (in volts) across resistorv 3
A skier is slinding downhill at 11 m/s when she reaches an icy path on which her skies more freely with negligible friction. find the speed of the skier at the bottom of the icy path
Suppose two parallel conducting plates are separated by 0.45 cm of air. Find the maximum potential difference between the two parallel conducting plates in kV
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be? Radius=0.47 x 10^-9.
In a hydraulic system with a large and a small piston, you wish to lift a 1130 kg car sitting on the large piston that has a diameter of 28.2 cm, What is the diameter of the small piston
A64-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. How fast is the astronaut moving after he throws the mallet
The base of the cloud, which is roughly parallel to the Earth's surface, serves as the negative plate and the region of Earth's surface under the cloud serves as the positive plate. The separation between the cloud base and the Earth's surface is ..
Two stars 19 light-years away are barely resolved by a 165 cm (mirror diameter) telescope. How far apart are the stars
A "door closer" is attached to the door and the top of the door frame.When the door is open and at rest, the door closer exerts a torque of 4.8 {rm N} cdot {rm m}. What is the least force that you need to apply to the door to hold it open.
The energy momentum relationship for the conduction band of a 3D semiconductor is: E= (h bar)^2/2m*[k(x)^2/2+k(y)^2+k(z)^2]
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