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A sprinter explodes out of the starting block with an acceleration of +4.4 m/s2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race.
(a) What is her velocity at t = 1.2 s.
(b) What is her velocity at the end of the race?
two blocks of mass m1 and m2 approach each other on a horizontal table with the same constant speed, Vo, as measured by a laboratory observer. Determine the ratio of the two masses m1/m2
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence, find the index of refraction for violet light in plastic
The diameter of planet mars is 6.794 km and it's mass is 6.4219x10^23 kg. calculate the centripetal acceleration of the satellite
An object with a charge of 0.980 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
A 370-?F capacitor and a 10m H inductor are in series with a 365 ? resistor. What is the impedance at the resonant frequency
what is the maximum amount the spring may be stretched and the box remain at rest.
A comet has a very elliptical orbit with a period of 124.0 y. If the closest approach of the comet to the Sun is 0.09 AU, what is its greatest distance from the Sun
How much force is the air exerting on the front cover of your textbook? (Assume that the width and the length of the book are 22.9 cm and 28.8 cm, respectively
Two parallel, vertical, plane mirrors, 31.9 cm apart, face each other. A light source at point P is 29.8 cm from the mirror on the left and 2.1 cm from the mirror on the right. Find the number of reflections of light rays for each of these images
90 grams of water at 80°C are mixed with an equal amount of water at 20°C in a completely insulated container. The final temperature of the water is 50°C. How much heat is lost by the hot water
Assuming a constant pressure gradient, if blood flow is reduced by 52%, by what factor is a blood vessel decreased in radius
The wave function y(x, t) for a certain standing wave on a string fixed at both ends is given by y(x, t) = 3.70 sin (0.220x) cos (270t), What is the speed of transverse waves on this string
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