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A positron, accelerated from rest by a fixed potential difference, acquires a speed of 0.3c. What speed is achieved by a proton accelerated from rest by the same potential?
Suppose two parallel-plate capacitors have the same charge q, but the area of capacitor 1 is A and the area of capacitor 2 is 2A. what is the voltage across capacitor 2?
An astronaut weighs 7*10^2 N on the surface of the earth (M earth=5.98*10^24 kg). What is her weight 7.70*10^6 m above the earth.
a 2.0-kg block slides on a frictionless 15 degree inclined plane. a force acting parallel to the incline is applied to
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
How many 104 W lightbulbs can you use in a 102 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each lightbulb is 102 V.)
a ball is thrown upwards with an initial velocity of 10 ms. find the time for its maximum height and also find its
A playground merry-go-round has a radius of 4.20m and a moment of Inertia 240 kgm^2 and turns with negligible friction about a vertical axis through its center. What is the average power supplied by the child
A charge of density p is distributed uniformly along an arc representing a half of a cirle of radius r. Determine the electric field intensity vector at an arbitrary point
a 1 microci hot particle was removed from a workers forearm using a tape press. an isotopic analysis of the particle is
A step-down transformer is used for recharging the batteries of portable devices. find the rms output voltage of the transformer
What is the oscillator's total mechanical energy as it passes through a position that is 0.749 of the amplitude away from the equilibrium position
A 10.5 kg monkey starts to climb along rope to reach a banana located at a height of 6.50 m. The ropewill snap if the tension exceeds 115.5 N. Calculate the leastamount of time the monkey could take to reach the banana without breaking the rope.
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