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A bullet of mass 5 g strikes and embeds itself in a wood block with mass 2 kg. Initially, the block is suspended and at rest. After the impact, the block swings up to a maximum height 4 cm. What is the velocity of the block right after the impact?
If Plancks constant, h, were larger, would photons of light of the same frequency be more energetic or less energetic?
Romeo is chucking pebblesgently up to Juliet's window, and he wants the pebbles to hit thewindow with only a horizontal component of velocity. How fast are the pebbles going when they hit her window
What is the largest slit width for which there are no minima when the wavelength of the incident light on the single slit is436nm?
q1. what fraction of the power radiated by the sun is intercepted by the planet mercury? the radius of mercury is 2.44
A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be cancelled. What current is needed in the solenoid's wires
A proud deep-sea fisherman hangs a 64.5-kg fish from an ideal spring having negligible mass. The fish stretches the spring 0.110 m. What is the period of oscillation of the fish
The highest-energy cosmic ray ever detected had an energy of about 3.0x10^20 eV. Assume that this cosmic ray was a proton. What was the proton's speed as a fraction of c
An automobile starter motor will draw 180A from the 12V battery of a car for perhaps 2 seconds in the process of starting the gasoline engine. How much power does it use
Our apparent weight is actually judged not by the force of gravity pulling on us, By what percent will your apparent weight change if you were to travel from the north pole to the equator
An object is placed 12 cm in front of a concave mirror whose focallength is 23 cm. The object is 3.6 cm tall.Determine (a) the location of the image,taking a real image as a positive value and a virtual image as anegative value.
On the floor1.5 m in front of the mirror is a small table, 0.75 mhigh. Illustrate what is the minimum height the mirror must have foryou to be able to see the top of the table in themirror?
You turn on your home computer to submit your NATS 1840 homework only to discover that you have no access to the Internet. Suggest one scientific (testable) hypothesis, that you could test at home,
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