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Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.14 g and a charge of magnitude q. The balls are attracted to each other, and the threads attached to the balls
For nitrogen gas dissolved in blood serum the Henry's law constantis 8.42 × 10-7 mol L-1 mmHg-1. If a scuba diver decends to a depth wherethe total pressure is 2.90 atm, what is the concentrat
Use the equations of motion with constant acceleration to find the electron's speed after 1.00 multiplied by 10-8 s, assuming it starts from rest.
A long wire has a radius of 1.45 mm. If charges on the surface of the wire produce an electric field just outside its surface of 564 N/C, what is the magnitude of the electric field a distance of 2.
(c) If the charge is all brought tn the center of the disk, find the magnitude and direction of the electric field at point P. (d) Why is the field in part (a) stronger than the field in part (b)? W
During a liquid-to-solid phase change of a substance, its change in entropy is -4.24 x 103 J/K. If 1.42 x 106 J of heat is removed in the process, what is the freezing point of the substance?
When two identical ions are separated by a distance of 6.0×10-10 m, the electrostatic force each exerts on the other is 5.8×10-9 N. How many electrons are missing from each ion? Express yo
A 43.3 kg boy and a 60.0 kg girl are on the surface of a frozen lake, 10.5 m apart. Using a rope, the boy exerts a horizontal 5.90 N force on the girl, pulling her toward him. Calculate the magnitud
Determine the acceleration and position of the bullet as a function of time when the bullet is in the barrel. use t as necessary and round all numerical coefficients to exactly 3 significant figures
A long wire has a radius of 1.82 mm. If charges on the surface of the wire produce an electric field just outside its surface of 624 N/C, what is the magnitude of the electric field a distance of 3.
An athlete executes a long jump, leaves the ground at an angle of 25 degrees from the ground and lands 5.80m away. a) what is the takeoff speed in m/s?
What is the best method to use to determine if moleculesare polar or nonpolar? Also with regards to intermolecular forces, what does polarizability mean and how do we determine if one molecule had
Car 1 weighs 4800 lbs and car 2 weighs 3900 lbs. after this accident car 1 skids for 50 feet and car 2 for 70 feet. The cars have the same braking system and a test skid yields a distance of 42 feet
While running down the road, they come to a deep gorge, 14.4 m straight across and 100 m deep. The Roadrunner launches himself across the gorge at a launch angle of 16° above the horizontal, an
A 10M solution. 20 g of solute was dissolved in 100 mL of water.What is the molecular weight of the solute used in the substance?
The average distance between Earth and the moon is 384,000 km. Find the net gravitational force the Earth and the Moon exerts on 3.00 x 10^4-kg spaceship located halfway between them.
The heating element of a clothes dryer has a resistance of 23 ohms and is connected across a 240 V outlet. What is the current in the heating element?
An accident to the head can effect the ability of a person toventilate [ breathe in and out], and so can certain drugs. What would happen to the partial pressures of oxygen and carbon dioxidein the
A third charge of +4q is located on the x axis at such a place that the net electrostatic force on the charge at the origin quadruples, its direction remaining unchanged. Where should the third char
A uniform line charge that has a linear charge density 4.7 nC/m is on the x axis between x = 0 to x = 5.0 m.
The minimum energy required to break the oxygen to oxygen bond in O2 is 495 kj/mol. Find the wavelength of a photon that has this energy to break one oxygen bond.
Write a complete mechansim for the formation of 1-methylcyclohexeneby the acid-catalyzed dehydration of 2-methycyclohexanol. Whatother elimination product(s) might be produced?
A solution is made by taking 100.0 mL of 2.0x10-2 molarNaOH and mixing in 50.0 mL of 3.0x10-2 molar HCL. The acidityof a small portion was tested using tyrolian blue indicator, forwhich the pKind =
50.0g of N2O4 is introduced into an evacuated 2.00L vessel andallowed to come to equilibrium with its decomposition product, N2O4-> 2NO2. for this reaction Kc = .133.
You need to produce a buffer solution that has a pH of 5.44.You already have a solution that contains 10 millimoles ofacetic acid. How many millimoles of acetate (the conjugate base ofacetic acid) w