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A terrestrial telescope (a "spyglass") by a diameter of 2.5cm is attached to a rifle and used for target practice with targets that are 330 m away. What is the smallest feature on the target that can be resolved by this telescope? Suppose λ = 500 nm. Ignore the effect of the Earth's atmosphere on the resolution.
A ball of mass 7 kg is thrown straight up in the earth's gravitational field with an initial speed v0 = 16 m/s. What is the initial kinetic energy of the ball
a certain black box contains unknown resistances and sources of emfs connected in an unknown way such that 1 a 10 n
Tritium ({}_1^3 {\rm{{\rm H})}} is an unstable isotope of hydrogen; its mass, including one electron, is 3.016049 {\rm u}. Determine the total kinetic energy of beta decay products
A lightbulb has a resistance of 230? when operating with a potential difference of 180V across it. What is the current in the lightbulb? mA
An %u03B1-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of1.20 106 V, What is the radius of its circular path
a singly charged ion of unknown mass moves in a circle of radius 14.5 cm in a magnetic field of 1.40 t. the ion was
An aluminum cylinder with radius 2.3cm and length 19cm is heated to 430 degrees C. Find the net power this cylinder radiates into a room
A generator supplies 140 V to a transformer's primary coil, which has 70 turns. If the secondary coil has 610 turns, what is the secondary voltage
An electron traveling at 15 m/s enter a 2.1 T magnetic field. The angle between the velocity and the field is 100 degree. Estimate the radius of the resulting circular path
An airplane employee tosses a 15-kg suitcase with a horizontal velocity of 3 m/s onto a 35-kg baggage carrier. Knowing that the carrier is initially at rest and can roll freely, determine (a) the velocity of the carrier after the suitcase has slid to..
A basketball is thrown horizontally with an initial speed of 4.90 m/s. A straight line drawn from the release point to the landing point makes an angle ? = 27.0° with the horizontal. What was the release height
an object of mass 1.1kg is placed 13.0 cm from the axis of a rotating turntable of variable speed. when the speed of
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