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A simple circuit is constructed by connecting one voltage source E Volt with one resistor resistor R Ohm and current is measured 4.84 Amps. If the voltage of the source is TWICE and resitor is ONE-THIRD of their previous values, what is the new current?
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
A spring is subjected to a force of 40 Newtons at a rest position. When an additional load of 3 N is exerted the spring has moved by 20 cm. Calculate the spring constant k of this spring.
You're the operator of a 1.20×104 V rms, 60 Hz electrical substation. When you get to work one day, What is the rms current leaving the station
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat by a constant acceleration of -3.9 m/s2 by reducing the throttle. How long does it take the boat to reach the buoy?
A wire carrying a current of 8.00 A is to be formed into a circular loop of one turn. If the needed value of the magnetic field at the center of the loop is 10.0 µT, what is the required radius?
a constant force changes the speed of a 76 kg sprinter from3m/s to 4m/s be 0.45s. What is the magnitude (in m/s2)of the acceleration of the sprinter
A barefoot field-goal kicker imparts a speed of 37 meter per second to a football initially at rest. find the force exerted by the ball on the kicker foot
a 0.060 kg tennis ball moving with a speed of 7.60 ms has a head-on collision with a 0.080 kg ball initially moving in
An alien pilot of an intergalactic spaceship, on a mission to measure the sizes of galaxies, is traveling at 0.86c relative to the galaxy A. She determines the length of the short axis of the galaxy A to be 2.9 × 1017 km.
In the figure, a stunt car driver negotiates the frictionless track shown in such a way that the car is barely on the track at the top of the loop. The radius of the track is 9.9 m and the mass of the car is 1800 kg. Find the force of the car on t..
In the figure, a long straight wire carries a current I1 = 42.1 A and a rectangular loop carries current I2 = 16.2 A. Take a = 1.43 cm, b = 9.67 cm, and L = 40.5 cm. What is the magnitude of the net force on the loop due to i1?
The supersonic aircraft Concorde has a length of 61.6m when sitting on the ground on a typical day when the temperature is 12.0C . The Concorde is primarily made of aluminum
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