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A 4-g bullet is fired into a 1.4-kg block that is resting on a table. After impact, the block with the embedded bullet slides 8 cm across the table before coming to rest again. The coefficient of kinetic friction between the block and the surface of the table is 0.71. What was the initial speed of the bullet? (Practise how to derive an algebraic expression for the speed of the bullet before calculating the final result.)
A 3.0-kg block sits on top of a 5.0-kg block which is on a horizontal surface. If the force is 10% greater than your answer for (a), what is the acceleration of each block
Four vectors A,B,C ,D and are shown (not to scale). Vector A has magnitude 23.0 and acts at an angle of 14.7 degrees with respect to the positive x axis. find the magnitude and direction of the resultant vector R
Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when it emits this photon
A typical nuclear power plant delivers heat from the reactor to the turbines at a temperature of 480°C. what is the maximum possible efficiency of these turbines
What is walking speed if the speed drops. after an exciting but exhausting lecture, a physic lecture stretch out for a nap on a bed of nails, suffering no injury and only moderate discomfort. how is this possible.
A meteorologist tracks the movement of a thunderstorm with Doppler radar, What is the direction of the average velocity of the storm
One mole of a monatomic gass initially at 273 K and 1 atm is compressed isothermally (T constant) from volume 22.4 L to 11. 4 L, Find the final pressure and draw a PV diagram, Labeling the initial and final states 1 and 2
A wooden raft has a mass of 85 kg. while empty it floats in water (density 1000 kg/m3) with 61 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
Albert is pulling a 25.0 kg block up a hill which has an angle of ï?± = 15.50, calculate the work done by each force listed, and thus find the total work done on the block
A candle is placed 16.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 7.5 cm farther away from the mirror. Find out the focal length of the convex mirror.
A father racing his son has three-fifths the kinetic energy of the son, who has one-third the mass of the father. What is the original speed of the father
A 17g particle is moving to the left at 24m/s. How much net work must be done on the particle to cause it to move to the right at 40 m/s.
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