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During 9.93 seconds a motorcyclist changes his velocity from v1,x = -37.3 m/s and v1,y = 14.1 m/s to v2,x =-21.9 m/s and v2,y = 29.3 m/s, Find the components of the motorcycle\'s average acceleration
A metallic sphere has a charge of +3.7 nC. A negatively charged rod has a charge of -6.0 nC. find the charges of the sphere and the rod
a dog walking quickly away from a motion detector. Draw a velocity graph that could represent this motion
A small sphere with mass 2.60g hangs by a thread between two large parallel vertical plates 5.00cm apart. What potential difference between the plates
Calculate the torque required to accelerate the Earth in3days from rest to its present angular speed about its axis. Calculate the average power required
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 1.00 L of air under the stratospheric ozone conditions of 227 K tempera
A student studied the clock reaction described in this experiment. She set up Reaction Mixture 2 by mixing 20 mL of 0.010 M KI, 10 mL 0.001 M Na2S2O3, 10 mL 0.040 M KBrO3, and 10 mL 0.10 M HCl using
A white precipitate formed with barium chloride, BaCl2: what is the chemical equation for the reaction of the reagent with the ion
An ideal gas originally at .85 atm and 64 degrees C was allowed to expand until its final volume, pressure, and temperature were 94 mL, .60 atm, and 41 degrees C respecitively. What was its initial
An electron is observed traveling at a speed of 25.7·106 m/s, How far will the electron travel before coming to a stop
A cube of ice is taken from the freezer at -8.7 C and placed in a 111 g aluminum calorimeter filled with 315 g of water at room temperature of 20.0 C, What was the mass of the ice cube
Snowboarder Sherry of mass m is pulled up a slope at constant velocity v by a tow bar. The force of the tow bar is parallel to the slope, find the force that the two bar exerts on Sherry
Rank each of the following compounds in decreasing order of reactivity towards Friedel-Crafts alkylation. Most reactive = 1; if a compound will not react, rank it as "non" rather than assigning a nume
A model rocket fired vertically from the ground ascends with a vertical acceleration of 3.2 m/s2 for 5.2 s. What is the maximum altitude reached
Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the C^14 has decayed to 1/16.0 of the original amount. How long ago was this plant alive. Express your answer numerically in
Bronco Brown is mowing his lawn. He applies a force F along the handle of the lawnmower as shown. Bronco moves the mower at constant velocity. What is the magnitude of the resistance force acting hor
In a women's 100-m race, accelerating uniformly, Laura takes 1.87 s and Healan 3.12 s to attain their maximum speeds, find the maximum distance by which Healan is behind Laura
In a plant fossil, you find that the C^14 has decayed to 1/16.0 of the original amount. How long ago was this plant alive? Express your answer numerically in years.
A small metal ball with a mass of 6.19 g and a charge of 6.15 mC is located at a distance of 0.67 m above the ground in an electric field of 11.5 N/C directed to the east
As a solid, Ag adopts a face-centered cubic unit cell. How many unit cells are present per cubic centimeter of Ag
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s. What is the speed in the second segment
Two point charges, q1 = 2.0 pC and q2 = -2.0 pC, are separated by 5.6 µm. What is the dipole moment of this pair of charges
Phosphorus-32 has a half-life of 14.0 days . Starting with 2.00 g of P^32, how many grams will remain after 70.0 days?
On a cold day, 16000 J of heat leaks out of a house. The inside temperature is 20.0° C, What is the increase in the entropy of the universe
The density of solid Fe is 7.87 g/cm3. How many atoms are present per cubic centimeter of Fe. As a solid, Fe adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimete