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A football player kicks a ball with a speed of 22.5 m/s at an angle of 47° above the horizontal from a distance of 35 m from the goal line. By how much does the ball clear or fall short of clearing the crossbar of the goalpost if that bar is 3.05 m high? (b) What is the vertical velocity of the ball at the time it reaches the goalpost?
A football is kicked straight up into the air; it hits the ground 4.4s later. With what speed did it leave the kicker's foot
A 2.0 kg block is projected down a plane that makes an angle of 20.degree with the horizontal with an initial kinetic energy of 2.0 J. If the coefficient of kinetic friction between the block and plane is 0.40, how far will the block slide down along..
illustrate the industry that is Swisher? The specifics of this question comprise - a) sales growth, b) number of domestic competitors, number of private labels and its market share, c) distribution network that dominates d) the buying behaviour of..
A thin horizontal 10cm x 10cm copper plate which is 1 mm thick has 1010 excess electrons. If the electrons are uniformly distributed, what are the strength and direction of the electric field a) 0.1 mm above the top surface of the plate? b) in the ce..
high-frequency sound waves exhibit less diffraction than low-frequency sound waves do. Determine the angle that locates the first minimum to either side of the central maximum in the diffraction pattern for the sound
Can you please help me? In reaching her destination a backpacker walks with an average velocity of 1.37m/s due west. how far did she walk
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.8 x 106. One pulse is delivered every time the fully charged capacitor loses 60.5% of its ..
A series RLC circuit contains a resistor of 20 ohms, a capacitor of 0.75x10^-6 F, and an inductor of 0.120 H. what is the rms current in the circuit when operating at its resonance frequency
The brakes of a car are applied to give it an acceleration of -3 m/s2. The car comes to a stop in 5 s. What was its speed when the brakes were applied
The windpipe of a typical whooping crane is about 5.0 ft long. What is the lowest resonant frequency of this pipe, assuming that it is closed at one end? Assume a temperature of 39°C. Hz
A 0.5kg block is attached to a spring with spring constant 18 N/m. As the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 34cm/s.
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 33.0 m above sea level, To what height above sea level does the rock rise
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