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An airplane, diving at an angle of 54° with the vertical, releases a projectile at an altitude of 770 m. The projectile hits the ground 3.50 s after being released. What is the speed of the airc
Find that frequency and the tension in the wire. (Use any variable or symbol stated above along with the following as necessary: vs for the speed of sound.)
A sample of helium has a volume of 325 mL and a pressure of 655 mm Hg. What will be the pressure if the helium is compressed to 125 mL( T constant).
The tube on the right has cross-sectional area A' = A/2. If the net force on the tube assembly is zero, what must be the speed v' of the water flowing through the tube on the right? Neglect gravity,
Calculate the concentration of I- in a solution obtained byshaking 0.19M KI with an excess of AgCl(s)? how do you do this problem??
Benzene is often produced as a by-product during the synthesis of phenylmagnesium bromide. How can its formation be explained? Write a balanced chemical equation for the formation of benzene.
What is the distance of closest approach if the thrust points in the radial direction?
A small object A, electrically charged, creates an electric field. At a point P located 0.250 directly north of A, the field has a value of 40.0 directed to the south. What is the charge of object A
A bicycle has wheels with a 30-centimeter radius. If smaller wheels with a 25-centimeter radius are installed, what is the change in linear speed of the bicycle if the wheels rotate at 1 revolution
The fermentation of glucose, C6H12O6, produces ethyl alcohol,C2H5OH, and carbon dioxide. How many grams of glucose are needed to form 7.50 g of ethanol?
In other words, find t2-t1, and How far does the motorcycle travel from the moment it starts to accelerate (at time t1) until it catches up with the car (at time t2)
Four identical metallic objects carry the following charges: +2.2 µC, +5.4 µC, -3.4 µC, and -8.8 µC. The objects are brought simultaneously into contact, so that each touches
Given are the standard reduction potentials for the two half-reactions:Cr3+(aq) + 3e- ®Cr(s) E° = -0.74 V
Consider the point (x, (x^2/4L)), where x is very large. Find approximate expressions for the speed and impact parameter at this point.
The planet jupiter has a mass 314 times larger than that of the earth (1.90 x 10^27). Its radius is 11.3 times larger than the earth's radius (7.15 x 10^7). Find the acceleration due to gracity on J
1 L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3. Adding 10mL of 2M sodium hydroxide solution to 100mL of this buffer causes the pH to rise to 4.78. What is the total mola
A circuit with C1=6*10^-6F, C2+3*10^-6, and potential difference=20V. Capacitor C1 is first charged by closing switch S1, Switch S1 is then opened, and the charged capacitor is connected to the unch
How many mL of 010 M NaOH should the student add to20 mL 0.10 M HFor if she wished to prepare a buffer with a pH of3.4, the same as in Problem 4?
What is significant about the vertical velocity when the projectile is at it's maximum height? Do we consider air resistance in regards to projectile motion? Is an object in uniform circular motion ac
Under the standard conditions of 1 bar pressure and 298.15 K,the equilibrium constant Kp for a gas phase reaction is 5.30E-13.Calculate the value of the Gibbs free energy change G,std for this react
What are the spectatorions in the solution after the complete neutralization reactionoccurs when mixing the weak acid H2SO3 (aq)and the strong base, LiOH (aq)?
An automobile is moving at 90 km/h and ascends a hill of gradient 1 in 25 (vertical rise of 1 unit for horizontal distance of 25). Mass is 1300 kg. What is the power in kW needed for the climb up th
An expandable vessel contains 729 mL of gas at 22°C. What volume will the gas sample in the vessel have if it is placed in a boiling water bath (100.°C)?
Calclate the initial velocity necessary to get the same range as part (a) including air resistance. i.e. How much harder will you need to hit the ball in the real world?
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