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A bullet is shot into a block of plastic. The bullet penetrates the block 0.3 meter. The mass of the bullet is 11 gram. It is traveling with a speed of 440 meter per second before it hits the block.
(a) Use kinematic equations to obtain the magnitude of the acceleration on the bullet as it is penetrating the block (neglect gravity, and suppose that the force on the bullet as it penetrates the block is constant).
(b) Use Newton's Second Law to obtain the magnitude of the force exerted on the bullet by the plastic block.
A physics student proposes to pull their van out of a mud hole on a country road by stretching a rope between the front of the van and an immovable object in front of the van, Find the tension in the rope and the forward component of the force on t..
A projectile is launched perpendicularly upward from a planet of mass M; and radius R; its initial speed is twice the escape speed. Derive an expression for its speed as a function of the distance from the center of the planet.
A jet makes a landing traveling due east with a speed of 115 m/s. If the jet comes to rest in 13.0s, what are the magnitude and direction of its average acceleration.
The mass of a string is 1.00 10-3 kg, and it is stretched so the tension in it is 120 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?
Cliff and Will support the board at each end so that it is horizontal. A 52 kg boulder is placed on a 2.00 m long board at a point that is x = 1.45 m from Cliff. What force does Will apply to the board
The chime is struck?
Two springs having spring constants k1 and k2 are attached end-to-end (in series). Describe the effective spring constant of the whole system
A uniform 1.7-kg rod that is 0.93 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are..
A woman at an airport is towing her 23.5-kg suitcase at constant speed by pulling on a strap at an angle ? above the horizontal. What is the magnitude of the normal force that the ground exerts on the suitcase
A particle has a de Broglie wavelength of 2.9 x 10-10m. Then its kinetic energy increases by a factor of 5. What is the particle's new de Broglie wavelength
Three equal charges of magnitude +4.00 uC are placed at the corners of an equilateral triangle of side 2 cm. what is the electric potential energy of the system
A 53-g iron bar at 100 degrees celsius is placed in a 300 g of water at 30 degrees celsius. if the specific heat capacity of iron is 450 J/kg degrees celsius, to what final temperature will the iron bar cool?
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