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A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA.
(a) If the beam is directed perpendicular to a flat surface, how many alpha particles strike the surface in 2.5 s?
(b) At any instant, how many alpha particles are there in a given 27 cm length of the beam?
(c) Through what potential difference in volts is it necessary to accelerate each alpha particle from rest to bring it to an energy of 26 MeV?
A circuit consists of two 150.?k? resistors in series with an ideal 12.0?V battery. Calculate the potential drop across one of the resistors
A 2.3cm high object is located 30cm from a diverging lens, whose focal length is 14cm. What is the height of the image produced by the lens
5.0kg of water at 32?C is mixed with 5.0kg of water at 52?C in a well-insulated container. Estimate the net change in entropy of the system
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 42.0 m/s, What work does the racket do on the ball
The total translational kinetic energy of the molecules of a sample of gas at 447 K is 1.33 x 10^4 J, Find the average translational kinetic energy of a single molecule
A plane is headed due west with an air speed of 224 m/s. Find the velocity of the plane relative to the earth
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
How does hydrogen bonding affect large molecules like proteins? What shapes do proteins take because of this effect?
The index of refraction for violet light in silica flint glassis 1.66, and that for red light is 1.62. What is the angulardispersion of visible light passing by an equilateral prism ofapex angle 60.0° if the angle of incidence is 50°.
A 56-? loudspeaker, a 8.9-? loudspeaker, and a 2.3-? loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers
A copper rod 25 cm long having a cross-sectional area of 7.5 cm2 is used to connect a boiler maintained at 100 oC to a large block of ice at 0 oC. What is the rate of change in entropy of the ice
A 626g sample of water at 90 degrees is mixed with 441g of water at 30 degrees. What is the final temp of the mixture? Presume not heat is lost to the surroundings.
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