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A soccer ball is kicked from the groundwith an initial speed of 19.9 m/s at anupward angle of 45°. A player 55 m away in the direction of thekick starts running to meet the ball at that instant. What must behis average speed if he is to catch the ball just before it hitsthe ground?
An aluminum wire having a cross-sectional area of 3.00 10-6 m2 carries a current of 4.2 A. Find the drift speed of the electrons in the wire
Air enters an insulated turbine operating at a steady state at 5 bar, 1000K and exits at 1 bar, 500K. Neglecting KE and PE changes and assuming ideal gas behavior, find whether the expansion is internally reversible, irreversible or impossible.
A stationary charged particle at the origin creates an electric flux of 487 N ? m2/C through any closed surface surrounding the charge. Find the electric field it creates in the empty space around it as a function of radial distance r away from the ..
Standing waves on a string are generated by oscillations having amplitude 0.005 m, angular frequency 942 rad/s, What is the equation of the standing wave
Suppose you throw a 0.058-kg ball with a speed of 10.9 m/s and at an angle of 30.9° above the horizontal from a building 10.8 m high. What will be its speed when it hits the ground
An engine compresses air down 1/16 its initial volume. The initial pressure is 7.7 X10^6 pa. Find the temperature after compression
A 0.460 kg wood block is firmly attached to a very light horizontal spring (k = 160 N/m) as shown in Fig. 6-40. It is noted that the block-spring system, when compressed 5.0 cm and released, stretches out 2.3 cm beyond the equilibrium position before..
The two blocks areconnected by heavy uniform rope with mass of 4.00 kg. An upward force of 200N is applied as show in fig P4.54 a) Draw a three free body diagrams: one for the 6.00 kg block, one for the 4.00 kg rope, and another for the 5.00 kg block..
When the hamster is running in a wheel, the temperature of the air in the calorimeter rises 1.60 per hour. how many grams of seed must the hamster eat per hour to supply this energy
A ball is thrown directly downward with an initial speed of 7.80 m/s from a height of 29.4 m. After what time interval does it strike the ground
question1an ideal gas expands at a constant pressure of 6.00 105 pa from a volume of 1.00 m3 to a volume of 4.00 m3 and
A 20.0-kg mass is supported by two strings. The left string is 2.00 m long and the right string is 5.00 m long. What is the tension in the left side string
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