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While traveling through space, Luke Skywalker's starfighter hits a stationary piece of space debris that has a mass of 2kg. The force the starfighter exerts on the debris is 399N that lasts for .7 s
Consider three charges q1 = 5.10 nC, q2 = 7.10 nC, and q3 = -2.60 nC, arranged in a triangle as shown below. The volume of q1 is 7.50 10-30 m3, the volume of q2 is 2.30 10-30 m3, and the volume of
If the daily recommended quantity of Ca2+ to maintain bone strength in older women is 1500 mg, how many Tums tablets are needed each day?
The mass of the blue puck is 10.0% greater than the mass of the green one. Before colliding, the pucks approach each other with momenta of equal magnitudes and opposite directions, and the green puc
(a) Find the current in the coil if the maximum torque exerted on it by the magnetic field is 0.18 N · m.
what is the distance to 70 Ophiuchi in parsecs? what is the actual length of the semimajor axis in AU? What is the sum of the massses of the two stars? Give your answer in solar masses.
Enzymes in the human liver catalyze a large number of reactionsthat degrade ingested toxic chemicals. by what factor is the rateof a detoxification reaction changed if a liver enzyme lowers the acti
A .22µF capacitor is charged by a 1.5 volt battery. After being charged, the capacitor is connected to a small electric motor that is 100% efficient. What initial voltage must the capacitor ha
Three identical point charges Q are placed at the vertices of an equilateral triangle. The length of each side of the triangle is d. What is the mag and dir of the total electrostatic force on the
A ball slides down an icy hill 100 meters high and slides up another icy hill 50 meters high, doing nothing in the middle (no speed is lost) how fast is it moving at the top of the 50 meter hill?
A ground state H-atom absorbs a photon of wavelength 60.69 nm, and its electron attains a higher energylevel. The atom then emits two photons:
A 60 kg person is parachuting and experiencing a downward acceleration of 2.4 m/s2. The mass of the parachute is 5.8 kg. (a) What is the upward force on the open parachute from the air? (b) What is
A student used a cation exchange resin to determine themolarity of sodium ion in an unknown sodium chloride solution. The student diluted the 25.00mL aliquot of the original unknownsolution to 250.0
A 0.26 kg particle moves along an x axis according to x(t) = - 14 + 3 t + 5 t2 - 5 t3, with x in meters and t in seconds. What are projections of the net force acting on the particle at t = 3.5 s on
If .934 grams of AgNO3 (formula weight 169.91 g/mol)were reacted with 100mL of 0.100 M HCL to make AgCl(formula weight 143.35 g/mol) which reactant would be the limiting reagent and t
A rectangle has a length of 2d, and a height of d. Each of the following three charges is located at a corner of the rectangle; +q1 at the upper left, +q2 at the lower right, and -Q at the lower lef
Vector is 3.0 units in length and points along the positive x-axis; vector is 4.0 units in length and points along a direction 150o from the positive x-axis. What is the magnitude of the resultant w
Jack pulls a sled across a level field by exerting a force of 110 N at an angle of 30o with the ground. What are the parallel and perpendicular components, respectively, of this force with respect t
Determine the difference in the pulses' times of arrival at the detector. (Assume the index of refraction of ice is 1.309.) Answer in units of ns.
Determine the enthalpy change, for dissolving thesalt. Report the value as the total energy absorbed orreleased when the entire sample of salt dissolves and then on apergram basis. What additional i
A tablet of a dietary supplement containing calcium carbonate is tonuetralize 38.3 mL of 0.251 M of HCL, forming calcium chloride,water and CO2. Calculate the number of milligrams of CaCO3 in t
A precipitate of FeS (Ksp = 6.3 x 10^-18) is formed by mixing 125.00 mL of a 0.32 M solution of Fe(NO3)2 with 100.00 mL of a 0.40M solution of Na2S.
An amount of 1.250g of an alloy (90% Ag, 10% Cu) was treated withHNO3 and H2SO4 to form Ag2SO4 and CuSO4. The solution was then treated with Cu wire to precipitate silver.
Write molecular and net ionic equations for the successive neutralizations of each acidic hydrogen of phosphoric acid by calcium hydroxide solution. Ca3(PO4)2 is insoluble; assume that the acid salt
You react 100.0 ml of a 1.01 M HBr(aq) solution with 99.1 mlof a 1.05 M KOH(aq) solution. The density of each solution is 1.04g/ml. The heat capacity of the calorimeter is 7.0 J/C.