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A helium-filled balloon has a volume of 0.010 m3. The temperature in the room and in the balloon is 20oC
a. Obtain the average kinetic energy of a particle of helium inside the balloon?
b. Obtain the average speed of a particle of helium inside the balloon?
c. Obtain the thermal energy of the helium in the balloon? Suppose that due to stretching of the balloon the pressure inside it is 1.1 atm.
The drawing shows a point charge q = +0.58µC and two locations A and B. What is the electric potential differenceVB - VA between these two locations? Be sure to include the properalgebraic sign.
1. show that a moving region of space in which e 0 e 0 b 0 -b 0 and v -c00 does not satisfy maxwells equations and
The spring is then released. If the mass is attached to the spring, explain how far up the slope will the mass move before coming to rest? Express your answer using two significant figures.
Two point charges of equal magnitude are 7.3cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 40N/C . Find the magnitude of the charges.
The waves from a radio station can reach a home receiver with two different paths. One is a straight-line path from the transmitter to the home, a distance of 28.0 km. The second path is with reflection from a storm cloud. Suppose that this reflectio..
A 1.5-cm--tall object is 28cm to the left of a lens with a focal length of 14cm. Calculate the distance between the image and the second lens
a wire is carrying a current in the -x direction. What is the direction of the uniform magnetic field such that the magnetic force is maximized
a pacemaker sends a pulse to a patients heart every time the capacitor in the pacemaker charges to a voltage of 0.32 v.
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. What stopping potential would be observed when using light from a red lamp (?=668.0nm)
What is the tension in the string
An 815-kg race car can drive around an unbanked turn at a maximum speed of 61 m/swithout slipping. The turn has a radius of curvature of150 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of2500 N on the ..
The largest and smallest slits in these experiments are 0.16mm and 0.04mm wide, respectively. How many wavelengths wide are these slits
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