Physics, 18.11.2019 19:31 guyfromnasa
In preparation for shooting a ball in a pinball machine, a spring (k = 730 n/m) is compressed by 0.0796 m relative to its unstrained length. the ball (m = 0.0585 kg) is at rest against the spring at point a. when the spring is released, the ball slides (without rolling). it leaves the spring and arrives at point b, which is 0.256 m higher than point a. ignore friction, and find the ball's speed at point b.
Answers: 1
Physics, 21.06.2019 17:30
Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg
Answers: 1
Physics, 21.06.2019 19:30
Describe the path of a ray that approaches a mirror parallel to the principal axis.
Answers: 2
Physics, 22.06.2019 05:40
An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2
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Physics, 22.06.2019 08:30
Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.
Answers: 1
In preparation for shooting a ball in a pinball machine, a spring (k = 730 n/m) is compressed by 0.0...
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