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Q. The press box at a baseball park is 32 ft above the ground. A reporter in press box looks at an angle of 18 degrees below the horizontal to see second base.
What is the horizontal distance from the press box to second base?
Q. A 110kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350N. For the first 15.00 m the floor is frictionless and for next 15 m the coefficient of friction is 0.30. What is the final speed of the crate?
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
A 15.00 block is attached to a very light horizontal spring of force constant 450 and is resting on a smooth horizontal table. Suddenly it is struck by a 3 stone travelling horizontally at 8 to the right, whereupon the stone rebounds at 2.00 horizont..
How much heat does it take to enhance the temperature of 8.00 of an ideal monatomic gas from 22.0 to 61.0 if the gas is held at constant volume.
A flight attendant pulls hero 70 N flight bag a distance of 253 m along a level airport floor at a constant velocity. The force she exerts is 40N at an angle of 52.0 degrees above the horizontal.
A coffee filter of mass 1.1 grams dropped from a height of 1 m reaches the ground with a speed of 0.5 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? Start from the Energy Principle and select as system..
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
A 5.0 multiplied by 102-newton girl takes 10. seconds to run up two flights of stairs to the landing, a total of 5.0 meters vertically above her starting point. What power does the girl develop during her run.
Therefore of his observations, Ole Roemer concluded that eclipses of Io by Jupiter were delayed by 22 min throughout a six-month period as the Earth moved from the point in its orbit where it is closest to Jupiter to the diametrically opposite point ..
What is the difference between mass and weight? On earth, what is the weight of a 1 kg mass?
Find out the speed of the satellite
W hat is the velocity of the gasoline in the tube
small metal bead, labeled A, has a charge of 26 . It is touched to metal bead B, initially neutral, then that the two beads share the 26 charge, but not required equally. When the two beads are then placed 5.0 apart, force between them is 5.4×10-..
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