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A 5g lead bullet travelling with v=1200m/s embeds in the 1kg block of ice at (-1°C). Knowing that practically all of the kinetic energy of the bullet is converted to heat find the final temperature of the bullet + ice system. How much water was produced during the melting?
A box of sand, initially at rest, is to be pulled across a floor by means of a cable in which the tension cannot be allowed to exceed 1100N. What is the weight of the sand and box in that situation
A 30 gram bullet initially traveling at 500 m/s penetrates 12 cm into a wooden block. Use Work Energy theorem and find the average force it exerts on the wooden block
A lump of putty with a mass of 0.550 kg and a speed of 0.750c collides head-on and sticks to an identical lump of putty moving with the same speed
Suppose that 2.8 moles of an ideal diatomic gas has a temperature of 1003 K, and that each molecule has a mass 2.32 Ã* 10^-26 kg, What is the internal energy of the gas
Calculate the pressure variation corresponding to a sound insensity of 10-16 W/cm2
Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 9.0g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.
q1. imagine a free electron and a free proton held midway between the plates of a charged equivalent plate capacitor.
An object is placed two focal lengths from a diverging lens. What is the magnification and location of the image.
A car is stopped at a traffic light. When the light turns green it accelerates at 2.5 m/s2 for 16 seconds. How many seconds does it take from start to stop
A Van de Graa? generator has a potential di?erence of 2.35 MV between the belt and the outer shell. What minimum power is needed to drive the moving belt
A block of mass m = 4.43 kg is attached to a spring which is resting on a horizontal frictionless table. What is the maximum speed of the block
The weight of the block on the table is 484 N and that of the hanging block is 165 N. Ignore all frictional effects, and assuming the pulley to be massless. Find the acceleration of the two blocks
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