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It takes 6.2 J of work to stretch a hooke's law spring 9.76 cm from its unstressed length. How much the extra work is required to stretch it an additional 7.06 cm?
A person has a near point of 0.15m and a far point of 0.8m a.) what is the focal length (include the sign) of a corrective lens that will allow that person to form an image of an object 100 meters in front of his eye on the retina? b.) what is the cl..
A 6.2\({\rm ft}\) tall shopper in a department store is 18\({\rm ft}\) from a convex security mirror, What is the mirror's radius of curvature
A 200 g mass attached to a horizontal spring oscillates at a frequency of 2.0 Hz . At one instant, the mass is at x= 5 cm and has v= -30 cm/s. a.Determine the period. b. Determine the amplitude. c. Determine the maximum speed. d. Determine the total ..
A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 41.0 km/hr (11.4 m/s), Calculate the acceleration of the car at that time
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. What is the volume flow rate through the pipe
A biologist is studying the growth of rats in an orbiting space station. To determine a rat's mass, she puts it in a 330g cage, what is the rat's mass
Compare these two ratings by determining the ratio of energy.
How high will a hot air balloon rise if the temperature inside ismaintained at 340 K? Assume that the ambient temperature is 300 K.Assume that the pressure inside and outside are the same,
An object is located on the optical axis of a converging lens a distance of 50.0 cm in front of the lens. where will the image of this object be located
Find the resolving power of a grating needed to separate the sodium-D spectral lines, which are at 588.5 nm and 589.2 nm. How many lines should the grating have to achieve this resolution in first order? (This is a very lower solution in terms of pre..
Piston-cylinder device has nitrogen gas at 160 kPa and 158oC. The 23-cm diameter piston initially pushes against a set of stops. Before the piston starts moving down, 2 kJ of heat is transferred from the gas to the surroundings. The cooling contin..
A woman stands on a scale in a moving elevator. Her mass is 70.5 kg, and the combined mass of the elevator and scale is an additional 815 kg. What does the scale read during the acceleration
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