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A car is traveling along a straight road at a velocity of +27.3 m/s when its engine cuts out. For the next 2.57 seconds, the car slows down, and its average acceleration is . For the next 4.47 seconds, the car slows down further, and its average acceleration is . The velocity of the car at the end of the 7.04-second period is +18.8 m/s. The ratio of the average acceleration values is = 1.81. Find the velocity of the car at the end of the initial 2.57-second interval.
An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 2313 N/C. What is the acceleration of the electron? magnitude m/s2 direction
Due to the nature of the wastewater, the engineer wants to target the high end of this range. Find the proper diameter pipe to the nearest 2” (e.g., 2”, 4”, 6”, 8”, 10”, etc.) to achieve this design objective.
q1. shell fired from a cannon has a muzzle speed speed as it leaves the barrel of 800 fts. the barrel makes an angle
A solid sphere of mass 2.5 kg and a radius 0.15m starts from rest at the top of the a ramp inclined 15 degrees, What is the total kinetic energy of the sphere when it reaches the bottom of the ramp
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.947 rad/s. Calculate the total angular momentum of the system
The current supplied by a battery in a portable device is typically 0.131 A. Find the number of electrons passing through the device
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. what was his average power output during the race
Calculate the force of gravity on a 69.29-kg mass at the Earth's surface. The mass of the Earth is 6E24 kg, and the its radius is 6.4E6 m. ( 6E24 kg can also be written as 6 X 1024 kg.)
When additional mass is added to the piston, the height of the piston decreases to 16.4 cm. Find out the new pressure applied by the piston.
A rectangle has a length of 5.50m and a width of 12.0m. What are the perimeter and area of this rectangle
Students determine the frequencies of standing waves on the horizontal segment of the string, then they raise a beaker of water until the hanging 1.4 kg {\rm kg} sphere is completely submerged.
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