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The electron beam in a cathode-ray tube is accelerated through apotential difference of 290 V. The electrons then pass through a small circularhole and are viewed on the screen. You observe that the centralbright spot on the screen is the base of a cone with its apex atthe hole. The outer edge of the cone makesa 0.860 ^\circangle with the original direction ofthe electron beam.
a.) What is the diameter of the hole?
1 a service station charges a battery using a current of 6.7 a for 5.0 h. how much charge passes through the battery?2
A vertical scale on a spring balance reads from 0 to 150 N. The scale has a length of 11.0 cm from the 0 to 150 N reading. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.60 Hz. Ignoring the mass of the spring, ..
What is the (a) magnitude and (b) angle (measured relative to the positive direction of the x axis) of the asteroid's acceleration.
A particle with a charge of +4.450e-3 C is placed on the y axis at y = 3.50 cm. Calculate the charge on a second particle
Find out the magnitude of the amount by which the potential difference across the plates changes.
A bullet is fired from a gun whose barrel is 0.600 m long. The bullets mass is 5.00 g and its velocity is 300m/s when it leaves the gun's muzzle. what was the average force acting on the bullet
A 4.5-g object moving to the right at 30 cm/s makes an elastic head-on collision with a 9-g object that is initially at rest. What fraction of the initial kinetic energy was transferred to the 9-g block
The following data are obtained from a Boyle's law experiment: P1 = 113 kPa, T = 300. K, V1 = 5.00 10-5 m3. Calculate the volume occupied by the gas
When jumping, a flea reaches a takeoff speed of 1.2 m/s over a distance of 0.45mm, How long does the acceleration phase last
A meter stick is found to balance at the 49.7 cm mark whenplaced on a fulcrum. What is the mass of the meter stick
A driver traveling at 72 km/hr sees an animal dash out onto the road and slams on the brakes. What was the driver's reaction time
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
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