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a world class sprinter can burst out of the blocks to essentially top speed of about 11.5m/s in the first 15.0m of the race. What is the average acceleration of the sprinter
A simple pendulum has a mass of 0.650 kg and a length of 2.00 m. It is displaced through an angle of 7.0° and then released. What is the maximum speed of the bob
An object moves with constant acceleration 4.35 m/s2 and over a time interval reaches a final velocity of 11.0 m/s. What is the distance it travels during this interval
A large positively-charged object with charge q = 3.75 ?C is brought near a negatively-charged plastic ball suspended from a string of negligible mass. what is the angle the string makes with the ve
Vectors A and B have scalar product -3.00 and their vector product has magnitude 9.00. What is the angle between these two vectors
if i car was travling at 22.2 m/s and went to 30.5 m/s in 5.2m/s what is the cars displacement during this maneuver
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.103 N, determine the positive charge in coulombs on the other
The hot reservoir of a heat engine is steam at 100?C while the cold reservoir is ice at 0?C. In 1.2hrof operation, 11kg of steam condenses, What is the power output of the heat engine
A vector has components of 10.0 units along the x axis and 11.0 units along the y axis. What is the magnitude of the vector
Desperate for money, you take a scary job climbing a very tall 2.640 hm high tower to make a repair. How far away are they in feet from the tower bottom
Three 10.53-g Styrofoam balls of radius 2 cm are coated with carbon black to make them conducting, Determine the absolute value of q
A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. What is the surface charge density on the red blood cell
What is the total charge of the uranium nucleus? (The neutral uranium atom has 92 electrons.), What is the magnitude of its electric field at a distance of 1.48×10-10 m from the nucleus
An electric field E with an average magnitude of about 150 N/C points downward in the atmosphere near Earth's surface. What charge (both sign and magnitude) must be used
Sgt Jay sits in a hovercraft 35.2 m above the surface of the planet Bai. The acceleration due to gravity at the Bain surface is 5.67 m/s^(2) down. What is Jay's velocity at t = 4.32s
consider a model rocket that is lunched in a vertical direction. Nelected air resistance and changes in its mass , m. determine the mamimum alttiude
1) the symbols for the elements in the compound. 2) the oxidation numbers of the elements involved and write them as superscripts to the right of the elemental symbols
The volume of a gas is 2.50 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.41 L
A solution of a specific vitamin has ?max = 223 nm and a concentration of 8.31 × 10-7 M. The absorbance of the solution at 223 nm is A = 0.180. What is the molar absorptivity of the vitamin at
Consider a single photon with a wavelength of a frequency of and an energy of E. What is the wavelength, frequency, and energy of a pulse of light containing 100 of these photons
Even if the temperature and kinetic energy are equal in a substance, does that guarantee that every molecule in said substance contain the exact same amount of energy
At 46°C a sample of ammonia gas exerts a pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one-eighth (0.125) of the original value at the same temperature
A gas occupying a volume of 155 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume
Why must we know both in order to explain the physical properties of the molecule. physical properties to be considered are solubility and the points when the molecule changes states