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Q1. A soccer player 'heads' the size 5 ball deflecting it by 46.0°, and keeps its speed of 15.90 m/s constant. A size 5 ball has a mass of approximately 0.421 kg. What is the magnitude of the impulse which the player must impart to the ball?
Q2. Is it possible to solve some questions
1-What is the origin for a positive deviation from Rauolt's law in some none ideal solutions?
2- Explain what electro negativity refers to and how this determines the nature of molecular bonds.
A helicopter is ascending perpendicularly with a speed of 5.42 m/s. At a height of 146 m above the Earth, a package is dropped from a window. How much time does it take for package to reach the ground.
What are magnitude and direction of net electrostatic force
An electric field of 220000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -10C at the spot.
What is frequency of the fork
Find graphically magnitude and direction of resultant force
A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
Speedboat A negotiates a curve whose radius is 150m. Speedboat B negotiates the curve whose radius is 190m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
Sketch a principle ray diagram showing the formation of the image. compute the position, size, orientation (erect or inverted), and nature (real or virtual) of the image.
Six pendulums of mass and length are released from rest at the similar angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes through per minute.
A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
A 2000-kg horizontal beam is supported at each end. A 160-kg load rests a quarter of the way from one end if the beam and 120 kg cargo is 1/3 from the other end. What is the vertical force on each of the supports.
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 30km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out the electric potential difference.
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