Bullet striking a block of wood
A rifle with a barrel length of 64 cm fires a 9 g bullet with a horizontal speed of 450 {rm m/s}. The bullet strikes a block of wood and penetrates to a depth of 12 cm.
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What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing?
Determine the work done by (a) the force F (b) gravity (c) the normal force between the block and the wall
A 13 g bullet traveling 236 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 179 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
The concentration of C20H42 (FM 282.55) in winter rainwater is 0.2 ppb. Assuming that the density of rainwater is close to 1.00 g/mL, find the molar concentration of C20H42.
What are the two most significant "anchoring devices" that insulate a person from a life of crime and imprisonment?& ;
The volume (in m3 at STP) and composition of the off-gases when air 20% (by volume) in excess of the theoretical requirement is used.
What the differences in the public reception of veterans returning from the Vietnam and Iraq wars. What were the reasons behind the difference in the treatment of these two groups of veterans?
How much heat is required to raise the temperature of 0.362kg of copper from23.0C to 60.0 C. The specific heat is 0.920 (g. C).
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studying how situational stress impacts conscientious behavior. For example, researchers could manipulate stress levels in a controlled
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Expand the following points on the ethical challenges in data collection and reporting: Bias and Objectivity Researchers should be aware of
Objective tests provide standardized questions and scoring systems, which improves reliability and makes it easier to compare
It is also important to note that naturalistic observation is a type of correlational research (others include surveys and archival research).
Kelly McGonigal's speech really changed the way I see stress, especially when it comes to public speaking. Before watching her talk
The primary advantage of naturalistic observation lies in the validity, or accuracy, of the information gathered unobtrusively