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1. One long straight wire carries a current of 7.5A. A 2.00m length of a second wire carries a current of 9.75A parallel to the first wire. The two wires are 5cm apart. Determine the force on the second wire due to the first.
2. When an automobile moves at 15 m/s, its axles experience an emf of .00110 V. If the component of the earth's magnetic field perpendicular to the car's velocity and to its axles is 3.00x10^-5 T, find the length of each axle.
3. A 450-turn coil of diameter 2cm experiences an axial magnetic field of 1.6T. The field is reduced to zero, yielding an induced emf of 6V. How much time did it take for the field to drop to zero?
The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
you are helping a friend you estimate it takes a force of 1665.5N to draw everything across the level grass at a constant speed. what is the coefficient of friction between the wood board and grass
What is the angle of incidence in air of a light ray whose angle of refraction in glass is half the angle of incidence? Assume the refractive index of glass is 1.50
A 0.11- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
A weather balloon filled with helium gas has a volume of 279 m3, What is the new volume of the balloon
Water flows at 5.0;{rm L}/{rm s} through a horizontal pipe that narrows smoothly from 10 cm diameter to 5.0 cm diameter. A pressure gauge in the narrow section reads 50 kPa. What does the other pressure gauge read.
What is the total charge on Earth's surface implied. explain the strength and direction of an electric field.
For saving energy, bicycling and walking are far more efficient means of transportation than is travel by automobile. For example, when riding at 11.0 mi/h, Find the fuel economy in equivalent miles per gallon for a person walking
If the mass of a sliding block is tripled at the equal time the net on it is tripled, how does the resulting acceleration compare with original acceleration?
The driver of an 1800 {kg} car travelling on a horizontal road at 100 kmh suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down the car, is 20.0 percent of the weight o..
A 1.6kg chicken is blown into a wall by a strong gust of wind, Which direction is the frictional force
you must determine the acceleration of a rocket so that its equipment can be designed to survive. the rocket will have a burne time of t=30 second, what is maximum altitude of the rocket
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