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A quarterback throws a pass that is a perfect spiral. In otherwords, the football does not wobble, but spins smoothly about anaxis passing through each end of the ball. Suppose the ball spinsat 7.65 rev/s. In addition, the ball is thrown with a linear speedof 16.0 m/s at an angle of 59.2° with respect to the ground. Ifthe ball is caught at the same height at which it left thequarterback's hand, how many revolutions has the ball made while in the air?
The position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t] . When t= .805s , what are the (a) velocity and (b) acceleration of the cart ?
A chair of weight 70 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 37.0 directed at the angle of 42 below the horizontal and the chair slides along the floor.
A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. What is the angular acceleration of the cylinder
An electron has an initial velocity of 5.00 106 m/s in a uniform 3.00 105 N/C strength electric field. How far does the electron travel before coming to rest
Monochromatic light of wavelength 500 nm is incident normally on a grating. If the third-order maximum of the diffraction pattern is observed at 32.0°, how many total number of maxima can be seen?
A meter stick of weight W leans away from a wall. The 0cm line is against the wall at the floor and it makes an angle theta with the wall. It is kept from falling by a horizontal string connected to the 80cm line. What is the tension (T) in the strin..
In this problem two moles of an ideal gas at 400 K expand quasi-statically and isothermally from an initial volume of 49.0 L to a final volume of 83.0 L. What is the entropy change of the gas
Consider a solid sphere, mass = 4.0 kg, that is spinning with an angular velocity of 23 radians/second.The diameter of the sphere is 0.20 meters
An astronaut is in equilibrium when he is positioned 738 km from planet X and 472 km from planet Y, What is the ratio of the masses of two planets X/Y
You are walking along a small country road one foggy morning and come to an intersection. At what speed is the ambulance traveling
A body is released from rest a long way from the centre of theearth. With what velocity will it hit the earth. Describe htevelocity
The third floor of a house is 7.00 m above street level. How much work is necessary to move a 143kg refrigerator to the third floor.
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