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A 40.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0°C is 331 m/s. If the temperature of the air decreases by 10°C, then what is the frequency of the fundamental frequency?
A certain commercial mass spectrometer (Fig. 28-12) is used to separate uranium ions of mass 3.92 x 10-25 kg, calculate the thermal energy (in J) produced in the cup in 1.07 h
The focal lengths of the objective and the eyepiece in a microscope are 0.29 and 2.5 cm. what is the distance between the objective and the eyepiece?
His arm is 70 cm long and has a mass of 4.0 kg. Illustrate what is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
A 5 L rigid (constant volume) container holds 0.60 moles of helium at an initial temperature of 80 oC, How many moles of gas will be in the container at the final temperature
Calculate the rest energy of an electron in joules and Calculate the rest energy of an electron in MeV (1MeV=1.60×10?13J)
The tangential speed of a particle on a rotating wheel is 3.5m/s. how long will the particle take to make one revolution
A charged particle moves in a circle in a magnetic field. (a) Starting with the force relation, write the equation for the radius of the circle
A student drops two metallic objects into a 120-g steel container holding 150 g of water at 25°C. One object is a 230-g cube of copper that is initially at 85°C, What is the mass of the aluminum chunk
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. compute the final temperature of the coffee
The E' is an unstable particle, with a mean lifetime on 2.5x10^-10s. What is the minimum uncertainty in this particles energy
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
Find out the rotational inertia of this object (a) about an axis through the center of the triangle and perpendicular to its plane (b) and about an axis that passes through one vertex and the midpoint of the opposite side.
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