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1. A bullet with a mass of 45 g is fired into a 8.3-kg block of wood resting on a floor against a spring. This ideal spring (k = 76 N/m) has a maximum compression of 28 cm. What was the initial speed of the bullet?
2. Two common and identical carts are used to perform an experiment. Cart A is pushed toward the stationary cart B with a velocity of 2.6 m/s. After the collision, cart A bounces back with a speed of 0.8 m/s and cart B moves of with a speed of 3.4 m/s. Why is this not possible?
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
A series RCL circuit includes a resistance of 271 ?, an inductive reactance of 661 ?, and a capacitive reactance of 425 ?. What is the voltage of the generator
A diver has a birthmark of area 2.0 cm^2. When the birthmark is 4.0 meters beneath the surface of the pool, what is the contact force exerted by the water on this birthmark
Mr. Smith is on top of a building launching water balloons. Let's assume he is 15 m above the ground and he is launching them at an angle of 30o above the horizon with a speed of 20 m/s. Compute how long will the balloons be in the air
A sphere that is a perfect blackbody radiator has a radius of 0.100 m, Calculate the net rate at which the sphere radiates energy
How high will a 2.0 kilogram rock go if it is thrown straight up by a person who does100 Joule of work on it
assume you would enter a vacuum chamber (on Earth), that is, a chamber with no air in it. Inside this chamber, if you dropped a hammer and a feather from the same height at the same time, both would hit the bottom at the same time.
The dipole moment of CH4 is zero, yet CH3D has a finite dipole moment. Describe why CH3D has a dipole moment. (Hint: Consider a simple qualitative model for potentials bonding H's and D's to C. Use your knowledge of the harmonic oscillator. Note that..
In a particluar x-ray tube, an electron approaches the target moving at 2 108 m/s. It slows down on being deflected by a nucleus of the target, emitting a photon of energy 35 keV. Ignoring the nuclear recoil, but not relativity, compute the final spe..
A steel wire strung between two supports is initially horizontal when there is no tension on it. When a 9.5 kg painting is hung on the wire, the wire makes a 25° angle to the horizontal, as shown. Illustrate what is the diameter of the wire?
An object of mass 50.5 g is initially placed in boiling water so that it is at 101° C. Then the object is dropped into a calorimeter, Find the specific heat of the object
charge a and charge b are 3.20 m apart and charge a is 3.50 c and charge b is 4.10 c. charge c is located between them
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