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A uniform and constant (in time) magnetic field has a magnitude of 0.15 T and is perpendicular to a circular loop of wire (one turn) that has a radius of 0.30 m. This circle, without changing its orientation relative to the field, changes into a square in a time interval of 0.22 s. discover the magnitude of the emf induced in the wire.
A ball is thrown directly upward with an initial velocity of 10 m/s. how long is the ball in the air
A wire has a cross-sectional area of 5.5×10-6 m2. In a time of 3.7 s, 5.8 C of charge flows through it. What is the magnitude of the current density in the wire?
Consider a uranium nucleus to be a sphere of radius R = 7.4x10^-15 m with a charge of 92 e distributed uniformly throughout its volume. What is the electric force exerted on an electron
A violinist is trying to tune her instrument to 512 Hz, but it is at 491. By what percent does she have to change the tension to tune the violin? Answer A) 1.2% B) 4.1% D) 8.7% E) 12.1% F) 14.5%
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Each cylinder has a radius of 0.30 cm. Find the amount by which the length of the stack decreases
The mass of the Space Shuttle orbiter is 8.8 x 104 kgand the period of its orbit is 82 minutes. Estimate thekinetic energy of the orbiter and the work done on it by gravitybetween the launch and orbit. (
If it takes 2.25 minutes to heat water in a 250 gm copper kettle from 20 °C to 85 °C, using a 700 W burner, how much water must be in the kettle
The speed of the ball at the top of the circle is 12.9 m/s. The acceleration of gravity is 9.8 m/s2 . If the ball is released at the bottom of the circle, what is its speed upon release
In 1987, Marisa Canofoglia, of Italy, roller-skated at a record -setting speed of 40.3 km/h. If the her momentum was 660 kg×m/s, what was her mass
White light is shone on a very thin layer of ice (n = 1.31), and above the ice layer, What is the thickness of the ice layer
A tennis player receives a shot with a tennis ball 0.0600 kilogram traveling horizontally 60.0 m/s, Find what work does the racket do on the ball
An astronaut is traveling in a space vehicle that has a speed of0.455crelative to Earth. The astronaut measures his pulse rate at69.5per minute. What pulse rate does the Earth observer measure
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