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Question: The pressure exerted by a phonograph needle on a record is surprisingly large. If the equivalent of 0.800 g is supported by a needle, the tip of which is a circle 0.220 mm in radius, what pressure is exerted on the record in N/m2?
Find the composition of Mg+ and Mg2+ formed as a result of absorption of energy. IE] and IE2 for Mg are 740 and 1450 kJ mol-1 respectively.
An artillery shell is fired from a cliff 20.4 m above a valley witha velocity 254 m/s at an angle 37.8 º above the horizontal. What is the maximum height of the shell
A mass-spring system has k = 55.2N/m and m = 0.405kg. Find the frequency of its simple harmonic motion
The instantaneous potential difference Vab across an electric light bulb has a maximum value of 170 Volt and a minimum value of -170 V. Evaluate what is the rms voltage
Build an Atom and Investigate Nuclear Reations
Charges of 3.0 nC, -2.0 nC, -7.0 nC, and 1.0 nC are contained inside a rectangular box with length 1.0 m, width 2.0 m, and height 2.5 m. obtain the electric flux through the surface of the box
What is the average translational kinetic energy of nitrogen molecules at 1400 K
A black furnace of surface area A = 3.0 m2 is fired up. Its outside temperature reaches 450oC. Calculate the net loss of power (in watts) by the furnace
The motor of a Scout rocket uses up all the fuel and stops when the rocket is at an altitude of 200 km above the surface of the Earth, How high will this rocket rise
During a rockslide, a 270kg rock slides from rest down ahillside that is 480m long and 300m high. How much mechanical energy is dissipated by the normal forceduring the slide down the hill
q1. helium he a monatomic gas fills a 0.009 m3 container. the pressure of the gas is 6.00 105 pa. how long would a 0.25
In daily life we see many cases of people who are caught misrepresenting things and who soon after that are excused and accepted by their contemporaries. How is this different in science.
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