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A rectangular loop (a = 0.14 m, b = 0.40 m) is pushed into a space where there is uniform magnetic field with a speed of 4.60 m/s.
a) What is the induced current in the rod if the magnetic field is uniform and has a magnitude of 7.50 T, and the resistance of the loop is 55.0 ohm?
Calculate the energy needed to accelerate a spaceship with a mass m = 25 × 103 kg to a speed of 0.40c. Compare this number with the approximate annual energy usage of Earth, 1021 J
At t=1.0 second, a 0.46 kilogram object is falling with a speed of 5.5 m/s. Find what is the speed of the object at t=2.0 s
Around the star Kepler-11 (mass 0.95 solar masses), there are orbiting six planets, at i) 0.0911, ii) 0.107, iii) 0.1542, iv) 0.1939, v) 0.2495, and vi) 0.464 AU. How large is the Hill sphere for planet (i) if you consider the star-planet system?
A 650 kg elevator starts from rest. It moves upward for 4.50 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. What is the average power of the elevator motor during this period
When light of wavelength 380 nm falls on a cesium surface,electrons are emitted that have a maximum kinetic energy of 1.13eV. Find the work function of cesium
A rescue helicopter lifts a 90-kg person straight up by means of a cable, What is the tension in the cable and How much work is done by the tension in the cable
What is the electric potential at the surface of a gold atom’s nucleus, which is assumed to be spherical? The radius of a gold nucleus is 6.6*10^-15 meters and the atomic number of gold is 79.
In the 1930’s acoustic detection systems able to detect anaircraft at a range of 40.0 km were developed in several countries.The aircraft engines generate a sound intensity level of 95.0 dB ata distance of 10.0 metres from the aircraft, what inten..
Suppose the coefficient of static friction between the road and the tiers on a car is 0.60 and the car has no negative lift. What speedwill put the car on the verge of sliding as it round a level curveof 30.5 m radius?
A charge of -6 nC is at the origin and a second charge of 11.0 nC is at x = 5.0m. Find the magnitude and direction of an electric field halfway in between the two charges.
Suppose you are using total internal reflection to make an efficient corner reflector, what must be the minimum index of refraction of the material
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be
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