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A cameraman on a pickup truck is traveling westward at 24 km/h while he videotapes a cheetah that is moving westward 25 km/h faster than the truck. Abruptly, the cheetah stops, turns, and then run at 42 km/h eastward, as gauged by a suddenly nervous crew member who stands alongside the cheetah's path. The change in the animal's velocity takes 2.3 s. What are the (a) magnitude of the cheetah's acceleration according to the cameraman and the (b) magnitude of the cheetah's acceleration according to the nervous crew member?
A certain digital camera having a lens with focal length 7.50cm focuses on an object 1.90m tall that is 4.70m from the lens. How far must the lens be from the photocells
Two balls are rolled off the tabletop that is 0.75m above the floor. Ball A has a horizontal velocity of 3.2 m/s, how far does each ball travel horizontally before hitting the floor
A 1920 kilogram car accelerates uniformly from rest to 12.1 m/s in 2.58 second. Compute the work done on the car in this time
A 150g copper bowl contains 220 g of water, both at 20.0degrees C. A very hot 300g copper cylinder is dropped intothe water, What is the original temperature of the cylinder
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, What is the weight of the truck
What is the potential energy of this group of charges. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the acceleration of crate.
A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14m/s, the total force exerted on the driver has magnitude 120 N. What are the magnitude and direction of the total vector force exerted on the driver i..
A 1600kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2500kg SUV traveling from east to west. How fast was sedan traveling just before the collision
A transformer is designed to step down the 206 volts to 16 volts. If there are 418 turns on the input coil, find how many turns should there be on the output coil
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
a student is standing at the edge of a rotating circular platform of mass 200kg and radius 1.1 m. the student of mass
A constant friction force of 5 N acts on a 85 kg skier for 20 s. What is the skier's change in velocity
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