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The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981. Assume the initial launch angle was 45° and neglect air resistance.
(a) Determine the initial speed of the projectile. m/s
(b) Determine the total time the projectile was in flight? s
(c) Qualitatively, how would the answers change if the launch angle were greater than 45°? Explain.
A professor's office door is 0.90 wide, 2.00 high, 4.00 thick; has a mass of 30, and pivots on frictionless hinges. A "door closer" is attached to door and the top of the door frame. When the door is open and at rest, the door closer exerts the torqu..
(1) A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. (i) Compute the frequency with which the wheel spins (ii) Compute the angular speed of the wheel. (iii) Comp..
What are the x- and y-components of the electric field at (x, y) = (0 m, +4 m)? (a)Two charges are placed on the x-axis: one is placed at x = 3 m and the other is at x = -3 m.
Suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0.954c. what is your breathing rate
What is the direction of this velocity. What is the magnitude of the velocity.
A 1050kg car carrying four 78kg people travels over a rough "washboard" dirt road with corrugations 4m apart which causes car to bounce on its spring suspension.
A girl sits fixed on a merry-go-round of mass M = 500 kg and radius R = 2 m. The merry-go-round is at first at rest and is free to rotate without friction.
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. determine the resistivity of the leaf tissue
Your friend's car is parked on a cliff overlooking the ocean on an incline that makes an angle of 22.1° below the horizontal. Find the car's position relative to the base of the cliff
What are magnitude and direction of net electrostatic force
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s, What are the components of the momentum of the electron
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