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A car going 15 m/s is brought to rest in a distance of 2.0 m as it strikes a pile of dirt. How large an average force is exerted by seatbelts on a 90 kg passenger as the car is stopped?
A commuter train passes a passenger platform at a constant speed of 35.5 m/s, What wavelength is detected by a person on the platform as the train approaches
A machine lifts 240 kg a distance of 120 m in 45 s. How much power is generated by the machine?
A converging lens with a focal length of 11.4cmforms a virtual image 7.55mm tall, 16.6cm to the right of the lens. Determine the position of the object
A fugitive tries to hop on a freight train traveling at a constant speed of 5.4m/s . Just as an empty box car passes him, What is the distance traveled to reach the box car
A thin piano-convex lens s made of flint glass which has an index of refraction of 1.64 for red light and 1.69 for violet light, if the radius of curvature of the surface of the lens s 20 cm, what s the dissimilarity in focal length of the lens for ..
You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 10,000 V, What is the breakdown potential of this capacitor
A vertical scale on a spring balance reads from 0 to 245 rm{N}. The scale has the length of 11.0 rm{cm} from the 0 to 245 rm{N} reading. A fish hanging from bottom of the spring oscillates vertically at a frequency of 3.00 rm{Hz}.Ignoring the mass..
A laser is utilizes in eye surgery to weld a detached retina back into place. The wavelength of the laser beam is 517 nm, while the power is 1.25 W. Through surgery, the laser beam is turned on for 0.0539 s. Through this time, how many photons are em..
A policeman is chasing a speeding car with a seed of 160 km/hr. the speeding car is moving with a speed of 120 km/hr. what frequency will the driver of the speeding car hear
A uniform electric field of magnitude 405N/C pointing in the positive x-direction acts on anelectron, which is initially at rest. The electron has moved2.90 cm. What is the work done by the field on the electron?
an 18 year old runner can complete a 10.0 km course with an average speed of 4.34 ms. a 50 year old runner can cover
A photographer uses his camera, whose lens has a 40mm focal length, to focus on an object 5.0m away. How far must the lens move to focus on this second object
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