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An Olympic long jumper leaves the ground at an angle of 23o and travels through the air for a horizontal distance of 8.7 before landing. What is the takeoff speed of the jumper?
What are the 3 essential properties of every material? What are microchips? How are they related to integrated circuits?
A 7.0-g bullet is fired into a 1.5-kg ballistic pendulum. The bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 12 cm. Find the initial speed of the b
The block of mass (M) is placed on a to a mass (m) hanging over a pulley. As the mass released and starts to fall, the block will slide across the track.
If the components of a mixture are colored, it is a simple matter to follow the components. How would you detect different components that were not colored?
Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric acid and 0.880 g of CO2 is produced. What is the percent of CaCO3 in the original mixture?
First determine which is the limiting reagent, then calculate the heat produced by the reaction (q), and molar heat of the reaction (H) using the above equations.
Products of this reaction are tin(II) oxide and water. What mass of hydroxyapatite can be converted to fluorapatite by reaction with 0.100g of tin(II) fluoride?
What would be the effect on the results of a column chromatogram if the top layer of sand was not included in making the column?
the solubility of Ba(IO3)2 in water is negligibly small and calculate the mass of the precipitated Ba(IO3)2 and calculate the mass of the unreacted compound that remains in the solution.
Water is pumped into a storage tank from a well delivering 22.0 gallons of water in 34.0 seconds through a pipe of 1.00 in.2 cross-sectional area. What is the average velocity of the water in the p
While in Europe, if you drive 113km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 34.0mi/gal ? Assume that 1euro=1.26doll
If the patch is 78 meters wide and the average force of air resistance on the skier is 179 newtons, how fast is she going after crossing the patch? (Note you must have first found the skier speed at
Isopropyl alcohol has a density of 0.785 g/mL. A bottle of isopropyl alcohol contains 15.7 g of the alcohol. What is the volume occupied by the alcohol?
A hollow cylinder of mass 0.140 kg and radius 3.80 cm has a string wrapped several times around it. A string is attached to a rigid support and the cylinder allowed to drop from rest. (a) Find the a
A flask contains 0.350mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask.
A pistol that fires a signal flare gives the flare an initial speed (muzzle speed) of 145 m/s.
The density of copper is 8.94 g/cm3. (Assume that the wire is a cylinder whose volume is V=πr2h, where r is its radius and h is its height or length.)#question..
SnI4 is soluble in acetone. What does this tell you about the ionic nature of this compound? Is the charge on the tin actually 4+? What was the effect of adding KI to the acetone solution?
Consider a clean sheet of barium metal with threshold frequency 6.07 x 1014 Hz illuminated by a light source. If the kinetic energy of ejected electrons is 1.31 x 10-18J, what is the wavelength (in
An electron in a TV picture tube is accelerated through a potential difference of 1.0 multiplied by 104 V before it hits the screen. What is the kinetic energy of the electron in electron volts?
A jetliner, traveling northward, is landing with a speed of 65 m/s. Once the jet touches down, it has 715 m of runway in which to reduce its speed to 6.0 m/s. Compute the average acceleration (magn
A plane flies from base camp to lake A, a distance of 240 km at a direction of 20.0° north of east. After dropping off supplies it flies to lake B, which is 210 km and 30.0° west of north f
A 15 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.7 s. What net force is acting on the mass along the incline?
The free-fall acceleration on the moon is 1.62 {rm{ m/s}}^{rm{2}}. What is the length of a pendulum whose period on the moon matches the period of a 1.80-m-long pendulum on the earth?