Physics, 05.08.2019 16:20 Hcalhoun21
A19.0-g bullet embeds itself in a 8.0-kg wooden block, which rests on a horizontal frictionless surface and is attached to a horizontal spring with a force constant of 500 n/m. the maximum compression of the spring when the block stops is 21 cm. what is the speed of the bullet just before it hits the block? a) 900 m/s b) 600 m/s c) 500 m/s d) 700 m/s e) 800 m/s 2.
Answers: 1
Physics, 21.06.2019 15:30
A1kg cart slams into a stationary 1kg cart at 2 m/s. the carts stick together and move forward at a speed of 1 m/sl. determine whether kinetic energy was conserved in the collision. use the law of conservation of energy to explain the collision
Answers: 3
Physics, 22.06.2019 01:00
15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?
Answers: 2
Physics, 22.06.2019 12:30
Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=
Answers: 2
A19.0-g bullet embeds itself in a 8.0-kg wooden block, which rests on a horizontal frictionless surf...
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