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A quarterback claims that he can throw the football a horizontal distance of 183 m (200 yd). Furthermore, he claims that he can do this by launching the ball at the relatively low angle of 25° above the horizontal. To evaluate his claim, determine the speed with which this quarterback must throw the ball. Assume that the ball is launched and caught at the same vertical level and that air resistance can be ignored. For comparison, a baseball pitcher who can accurately throw a fastball at 45 m/s (100 mph) would be considered exceptional.
A wrench 0.3 meters long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of langle 0, 1, 2rangle at the end of the wrench. Find out the magnitude of the force in newtons needed to give 100 newton..
Positive charges with magnitudes 3.50 mC and 6.75mC are located at the origin and at the point (10,0) metters on the x axis, respectively. What are the strength and direction of the field they generate at the point (0,10) on the y axis?
an object is launched vertically down into an unknown liquid. the initial velocity is 60.0 ms. the drag causes the
A displacement, s, of an object as a function of time, t, is given by , Find an expression for the acceleration of the object
An open container holds ice of mass 0.595kg at a temperature of -13.5 celcius . The mass of the container can be ignored. How much time passes before the ice starts to melt
a sky diver with parachute unopened falls 631 m in 15.6 s. then she opens her parachute and falls another 347 m in 133
Describe the operation of a scanning tunneling microscope and explicitly include how it involves barrier tunneling.
On a drive from your home to town, you wishto average 33.6 mph. The distance from yourhome to town is 90miles. However, at 45miles(half way), you find you have averaged only25.2 mph.
a fuse in an electric circuit is a wire that is designed to melt and thereby open the circuit if the current exceeds a
Constructive interference occurs when a soap bubble reflects light of wavelength 430 nm. What is the minimum thickness of the bubble
Two bicyclists begin to travel clockwise on a circular path of diameter D = 150.00 m with the constant speeds vA = 11.00 m/s and vB = 8.00 m/s, What is the total distance travelled by the pigeon
The magnetic force per meter on a wire is measured to be only 21% of its maximum possible value
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