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Two 72 kilogram hockey players skating at 6.50 m/s collide and stick together.
If the angle between their initial directions was 110 degree, find what is their speed after the collision?
calculate the expectation value of the x position of a particle known to be in a state n 3 of a 1d box of length l.
A 1300kg car drives around a flat 190m diameter circular track at 30 m/s. What is the magnitude and direction of net force on the car.
Find the maximum efficiency that a heat engine could have when operating between the normal boiling and freezing temperatures of water
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
Vector B has magnitude of 8.0 at an angle of -10.0 o from the x-axis. Let C=A+B. Let D=A-B. Let V=2*A-B. What is the x-component of vector C. What is the y-component of vector C.
What are the next two harmonic frequencies above the fundamental frequency that would create resonance in the same tube. What length tubes (also closed at one end) would have as their fundamental frequencies.
A constant torque of 28- N•m is applied to a grindstone whose moment of inertia is 0.130 kg•m2. Using energy principles, and avoiding friction, find out the angular speed after the grindstone has made 15 revolutions.
a cannon barrel is elevated at an angle of 45deg. it fires a ball with a speed of 346 ms. for the following questions
A disc rolls down an inclined plane of angle 30o (see figure). What is the acceleration of the disc (in m/s2)
An undersea research chamber is spherical with an external diameter of 3.90m . The mass of the chamber, when occupied, is 30800kg. What is the buoyant force on the chamber
A whale uses sonar (sound waves) to supplement its eyesight for deep water dives. The whale sends out a sound wave, which returns in 0.5 seconds. How far away is the object it bounced off
Assume the magnitude of the electric field on each face of the cube of edge L = 1.01 m, Determine the net electic flux through the cube
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