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A batter hits a baseball m = 0.48 kg from rest with a force of F = 86 N, The ball is in contact with the bat for t = 0.26 s. It is observed that the ball leaves the bat with an angle of ? = 27 degrees with respect to the horizontal.
A. How long was the ball in the air if it hit from the top of a clif with a height of a clif with a height of h= 129
B. How far did he ball travel horizontally in meters?
A wheel 90.0 cm in diameter accelerates uniformly from 235 rpm to 385 rpm in 6s. How far will a point on the edge of the wheel have travelled in this time.
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What is speed of the second train, which travels faster
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A 370 kg rocket sled can be accelerated at a constant rate from rest to 1200 km/h in 2.0 s. What is the magnitude of the required net force
The mass of a string is 1.00 10-3 kg, and it is stretched so the tension in it is 120 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?
A glass rod 96 cm long with an index of refraction of 1.6 has its ends ground to convex spherical surfaces of radii 8 cm and 16 cm. Find the image distance due to refraction at the first surface. (Include the sign.)
A) What are science misconceptions? What other names are used to refer to them? How are they formed? What difficulties do they present to the learning and understanding of science concepts?
A 150g steel ball and a 300g steel ball each hang from 1.0-m-long strings. At rest, the balls hang side by side, barely touching. To what angle does each ball rebound
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You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind, What is the speed of the police car
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