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A nucleus of the boron-11 isotope consists of five protons and six neutrons. evaluate the magnitude and direction of the electric field
A baseball weighs 5.17oz . What is the kinetic energy in joules of this baseball when it is thrown by a major-league pitcher at 91.0mph. By what factor will the kinetic energy change if the speed of
A total charge of 7.05 10-6 C is distributed on two different small metal spheres. How much charge is on each sphere
A pair of closely spaced parallel conducting plates, charged with equal and opposite electric charges, produces a uniform electric field in the region between them, What must the strength of the ele
If it is Ionic, mention which is the cation and which is the anion. Discuss how the ions formed (gaining or losing electrons and how many). If it is covalent, discuss where the covalent bonds are an
Two metal spheres are separated by a distance of 1.1 cm and a power supply maintains a constant potential difference of 830 V between them. what is the distance between the spheres
The amino acid histidine has 3 pKa's at 1.8, 6.0 and 9.3. In a 0.01 M solution of histidine, what is the concentration of protonated carboxylic acid at pH 7.4. The primary amine. The side chain
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. What is the volumetric flow rate through the pipe
Assume that a spacecraft lands on an asteroid and bores a hole perpendicular to its surface, what is the circumference and radius of that asteroid
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. What is the speed through the second segment
Predict the major organic product of the reaction between N-propylacetamide and sodium benzoate upon heating at 140 degrees Celsius. Select one: N-propylbenzamide propyl benzoate phenyl propanoate
A person with perfect pitch sits on a bus bench listening to the 450{\rm Hz} horn of an approaching car. how fast is the car moving
Esters and amides can be most easily and conveniently prepared by nucleophilic substitution reactions on: (select one or more) alcohols carboxylates acyl chlorides carboxylic acids amines acid anhyd
A lamp which is 12.0 cm tall is 286.8 cm in front of a converging lens which has a focal length of 77.5 cm. What is the image distance for this lamp
Chlorination via radical halogenation is a very unselective process and can lead to the formation of all three of the below products. Estimate the relative percentages of each product that will be f
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 5.0 m/s. What is the speed in the third segment
an object and lens positioned to form a well-focused, inverted image on a viewing screen. What happens to the image on the screen
A ball is thrown directly upward with an initial velocity of 10 m/s. how long is the ball in the air
A person whose mass is m = 97.0 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the angle ? = 25.3° with the horizontal
A typical lightbulb in your house is rated 137 W, which means that the lightbulb dissipates 137 W when connected to a DC voltage of 110V. what is the dissipated power
The Specific heat capacity at constant pressure of a gas varies with the temperature according to the expression: C_p = ( a + bT - c/T^(2) )
Two capacitors are connected to a battery. The battery voltage is V= 80V, Determine the total energy stored by the two capacitors
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. What is the volume flow rate through the pipe
A cube of mass m1 = 8.8 kg is sitting on top of another cube of the same size, What is the magnitude of the normal force with which the bottom cube is acting on the top cube
A wire has a diameter of 1.74 mm and a length of 37 m, What is the resistivity of the wire?