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1. A female archer pulls slowly back 0.75 m on a bow which has a theoretical stiffness of 200 Newtons/meter. The arrow has an estimated weight of 50 grams. Calculate the velocity of the arrow immediately after release?
question1 two boxes of equal mass m are placed one on top of each other. in case 1 an applied force acts on box b while
Two blocks, each with weightw, are held in place on a frictionless incline in terms ofwand the angleaof the incline. Calculate the magnitude of the force that the incline exerts on each block in N
An argon-ion laser produces a cylindrical beam of light whose average power is 0.662 W. How much energy is contained in a 1.88-m length of the beam
An electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. Its initial velocity is 3.0 x 104 m/s. What must be the potential of the upper plate if the electron stops just before reaching it? The lower plate..
If a woman needs an amplification of 1.5 x 104 times the threshold intensity to enable her to hear at all frequencies, find what is her overall hearing loss in dB
In the action adventure film Indiana Jones and the Raiders of the Lost Ark. What is the equation for the rotational kinetic energy KR,1 of the spherical boulder?
A proton moving at a speed of 3.8 ´ 106 m/s cutsacross the lines of a magnetic field at an angle of 30°. The strength of the field is 0.25 ´ 10-4 T. What is the magnitude of the force acting on the proton?
A child and sled with a combined mass of 52.8 kg slide down a frictionless hill that is7.17 m high. If the sled starts fromrest, what is its speed at the bottom of the hill
A box of mass 52 kg is pushed up an incline that has a total length of 7.0 m and is tilted 21° away from the horizontal. What is the work done by the applied force
An electron is released from rest at the negative plate between two 10.0 cm long parallel plates separated by 1.00 cm, What is the electron's velocity when it strikes the other plate
An air puck of mass m1 = 0.21 kg is tied to a string and allowed to revolve in a circle of radius R = 0.8 m on a frictionless horizontal table. What is the horizontal force acting on the puck
Two gravitational forces act on a particle, in perpendicular directions. To find the net force, can we add the magnitudes of those two forces?
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