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A lens which is 40.0 cm from an object forms an image of the object on a card 20.0 cm away. Determine what is the focal length of the lens? If the height of the image is .75 cm, what is the height of the object?
A circular wire loop of radius 13cm carries a current of 3.66 A. It is placed so that the normal to its plane makes an angle of 34.8° with the uniform magnetic field of magnitude 9.70 T.
Starting from rest, a speedboat reaches a speed of 2.30 m/s in 1.2 s. What is the boat's speed after an additional 2.50 s has elapsed, assuming the boat's acceleration remains the same.
A particle moving in a straight line with constant accelaration - Find the velocity of particle at the mid point of the path.
Determine the normal force exerted by the road on the car, the normal force exerted by the car on the 73-kg driver, and the car speed at which the normal force on driver equals zero.
A body of mass 200 g is acted upon by a force of 20 n. Find the acceleration of the body. If the body above is having a volume of 1000 cm3 estimate its density in kg/m2.
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
Find out the force each hand exerts on the shaft when the shaft is rotating in the horizontal plane about its center at 5×10-2 {rm rev/s}.
Determine the value of the electric potential. calculate the acceleration of the ball when it is 3 cm from the surface and again at the position determined in part b.
A chair of weight 130 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 fixed at an angle of 39.0below the horizontal and the chair slides along the floor.
Presume the needle moves 7.5 mm from its highest to its lowest position and it makes 26 stitches in 9.1 s. What is the highest needle speed.
Show that the boundary conditions far away from the cylinder
The magnitude of the vector is 45.0 units and points in the direction 386 counter clockwise from the positive x-axis. Calculate the x-component of this vector.
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