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Question 1:
A soccer ball is kicked from the ground with an initial speed of 18.0 m/s at an upward angle of 46.3°. A player 53.2 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before it hits the ground? Neglect air resistance.
Question 2:
A certain airplane has a speed of 337.4 km/h and is diving at an angle of θ = 33.0° below the horizontal when the pilot releases a radar decoy (see the figure). The horizontal distance between the release point and the point where the decoy strikes the ground is d = 679 m. (b) How high was the release point?
what is the wavelength of the radio waves broadcast by an fm radio station with a frequency of 90.7
An automobile starter motor has an equivalent resistance of 0.0660 ? and is supplied by a 12.0-V battery with a 0.0170-? internal resistance. What is the current to the motor
while a system is taken from state a to state b in the figure below the path acb, 84.0 of heat flows into the system and 57.0 of work is done by the system.
a)What is its velocity b)The charged ion then enters a magnetic field, B = 0.20 T, perpendicular to the field. What is the radius of the particle's circular orbit in the field
A box of books weighing 304 N is shoved across the floor of an apartment by a force of 543 N exerted downward at an angle of 39.5 degrees below the horizontal. How long does it take to move the box
A uniform 7.6 ladder is leaning against a frictionless vertical wall, with which it makes a 15 angle. how massive a person would make the ladder slip
One cylinder in the diesel engine of a truck has an initial volumeof 600 cm3. Air is admitted to the cylinder at 30 C anda pressure of 1.0 atm. What are its final temperature and volume
A metal ball with a mass of 3.71·10-6 kg and a charge of +5.77 mC has a kinetic energy of 4.99·108 J. It is traveling directly at an infinite plane of charge with a charge distribution of +3.21 C/m2. If it is currently 1.87 m away from the plane of c..
A fancy lecture demo designed to gauge electric fields is shown in the figure above. A pith ball of mass 0.510 g and positive charge q = 42.6x10-6 C is suspended on a string of negligible mass in a uniform electric field. We observe that the ball han..
A 78 person sits on a 3.6 chair. Each leg of the chair makes contact with the floor in a circle that is 1.0 in diameter. Find the pressure exerted on the floor by each leg of the chair
a pipe open at both ends has a fundamental frequency of 380 hz when the temperature is 0degc.a what is the length of
A certain waffle iron is rated at 0.62 kW when connected to a 120-V source. What current does the waffle iron carry
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