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A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. At what angle is the rock thrown
Derive an equation for the temperature dependenc of the vapor pressure of a liquid (analogous to the integrated form of the Clausius. Clapeyron equation) assuming that the vapor has the equation of
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
A thin plate of copper is suspended in seawater. If the corrosion rate is 0.9 mpy (mils per year) and the plate is a square of dimension 3.5 in. per side, how much weight loss (in mg) is expected in
A molecule of DNA (deoxyribonucleic acid) is 2.35 µm long. The ends of the molecule become singly ionized: Determine the effective spring constant of the molecule
A certain freely falling object, released from rest, requires 1.05 s to travel the last 33.0 m before it hits the ground. Find the total distance the object travels during the fall
One series of lines of the hydrogen spectrum is caused by emission of energy accompanying the fall of an electron from outer shell to the fourth shell. The lines can be calculated using the Balmer-R
A closed ended manometer is used to measure the pressure in a tank of gas. The working fluid for the manometer has a specific gravity of 1.47. what is the gauge pressure (in Pa) in the tank
Consider a large chemical storage tank that is 100 ft in diameter and 25 feet tall. What is the force exerted by the fluid on the base of the tank
Draw orbital-filling diagrams for atoms with the following atomic numbers. Show each electron as an up or down arrow, and use the abbreviation of the preceding noble gas to represent inner-shell el
How many grams of gasoline are required to impart a velocity of 26 meters/sec (60 miles per hour) using the same engine and neglecting losses that may be higher at the higher velocity
Calculate ?H° for each of the following reactions using the data in Appendix 4: 4Na(s)+O2(g) ? 2Na2O(s) 2Na(s)+H20(l) ? 2NaOH(aq)+H2(g) 2Na(s)+CO2(g) ? Na2O(s)+CO(g) Explain why a water or carbo
A woman stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.75 of her regular weight. Calclate the acceleration
Which atom in each of the following pairs has a larger radius. (a) Na or K (b) V or Ta (c) V or Zn (d) Li or Ba
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
Young's modulus for earth can be approximated by 5.5*10^5 MN/m^2 and the corresponding shear modulus by 2.0*10^5 MN/m^2. How far from the station did the earthquake take place
The moon is slowly getting further from the earth by about 2 inches every year. At present, it takes the moon 27.321 days to orbit the earth. What is velocity in present day
Consider the following function. f(x) = x^3 ln x b) Use l'Hospital's Rule to determine the limit as x ? 0+, c) Use calculus to find the minimum value., d) Find the interval where the function is con
Estimate the average force exerted by a shot-putter on a 7.0 kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s
Two small charges with a mass of 1.0 g each are connected by 2.0-cm-long insulating rod of negligible mass. Obtain the moment of inertia around the center of mass
A box of unknown mass begins at the base of a 30 degree ramp with an initial velocity of 10.0 m/s. calculate the maximum distance up the ramp which the box will reach
An electron and a proton are accelerated starting from rest through a potential difference of 10 million volts. Find the momentum (in MeV/c) and the kinetic energy (in MeV) of each
A new plant oil is discovered that is easy to recover from the plant and it might be a useful fuel. A question is the energy density of the fuel. Calculate the energy-density of this "new fuel"
A spring stretches 0.05 m when a 0.3 kg mass is suspended from it. find the charecteristic frequency of this mass on the spring
A woman with her arms outstretched has a moment of inertia of 2 kg m^2. She rotates on a stool at an angular velocity of 6rad s^-1. what is her angular velocity