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Q. A stunt woman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The speed of the horse is 10.0 m/s, and the woman is initially 2.75 m above the level of the saddle.
Q. A wave in the ocean has amplitude of 3 m. Winds pick up suddenly, increasing the wave's amplitude to 6 m. How does this change in amplitude affect the wave's frequency and the amount of energy it transports?
How far does the car go before it stops. A car traveling at 50m/s runs out of gas while traveling up a 30 degree slope. how long will it travel before it rolls back down.
If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 3.7 and mass 0.14.
What is the most amounts by which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass .
What average force is required to accelerate 7 gram pellet from rest to 125 m/s over a distance of .8 m along the barrel of a rifle.
What is modify in frequency ff - fi
What are the magnitude and direction of the net force. how long does it take for the police car to catch up with the speeder.
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up.
What is the distance between the centers of the two slits? Describe answer in m.
A coiled telephone cord forms a spiral with 56 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.
A radar antenna is tracking a satellite orbiting the earth. At a certain time,the radar screen shows the satellite to be 162 km away.The radar antenna is pointing upward at the angle of 62.3 degrees from the ground.find the x and y components(in k..
A certain car battery with a 12.0 V emf has an initial charge of 115 A·h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how various hours can it deliver energy at the rate of 110 W.
A bead with a mass of 0.02 g and a charge of 20nC is free to slide on a vertical rod. At base of the rod is a fixed 20nC charge.
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