How fast does it move after the bullet emerges
A 13 g bullet traveling 224 m/s penetrates a 2 kg block of wood and emerges going 166 m/s. If the blosk is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
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When a 100 gram mass is suspended from a vertical spring and it remains motionless, what is the net force on the mass in this equilibrium position?
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You leave the doctor's office after your annual checkup and recall that you weighed 681 N in her office. You then get into an elevator that, conveniently, has a scale. Find the magnitude and direction of the elevator's acceleration if the scale re
Why are the deeper parts of the sea/ocean/lake colder than their surface? Does the convection play any role here?
A right triangle has a hypotenuse of length 3 m, and one of its angles is 30. What is the length of (a) the side opposite the 30 angle and (b) the side adjacent to the 30 angle?
Calculate the free energy DeltaG at 25 ^circ rm C for the nonstandard conditions at point B where the reaction quotient Q is 2.75 times 10^{-5}.
A compound microscope has an objective lens of focal length 9.90 mm with an eyepiece of focal length 15.2 mm, and it produces its final image at infinity. The object to be viewed is placed 2.00 mm beyond the focal point of the objective lens. What
Two narrow slits 62um apart are illuminated with light of wavelength 480nm. What is the angle of the bright fringe in degrees?
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