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A generator is designed to produce a maximum emf of140 V while rotating with an angularspeed of 3600 rpm. Each coil of the generator has an area of0.051 m2. If the magneticfield used in the generator has a magnitude of 0.050 T, how many turns of wire are needed?
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long. What is the time tTO needed to take off
An electron is moving east in a uniform electric field of 1.53N/C directed to the west. What is the speed of the proton at point B
A child is riding across a rough field on a sled. Together, she and the sled have a mass of 73 kg. The sled is being pulled by her brother at an angle of 16º with a force of 356 Newtons. What is her acceleration if the coefficient of kinetic friction..
A long jumper (as shown in the figure) leaves the ground at an angle of 17.0° to the horizontal and at a speed of 10.6 m/s. How far does he jump
A small, plastic sphere of mass m = 111 g is attached to a string There is an electric field of 122 N/C directed along the + x axis
What force does a 55 kg passenger exert on the seat when she is at the top of the Ferris wheel.
An 81.7-g arrow is fired from a bow whose string exerts an average force of 121 N on the arrow over a distance of 78.4 cm
Dr Doreen's sister Karen got a yellow camaron for her birthday. She races up to meet with Dr Doreen. What was Dr Doreen's acceleration
if two masses m1 and m2 are confined to a circle and identical springs with spring constant k connect the masses find
One 20-year-old twin brother takes a space trip with a speed of0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the age of the Earth-based twin brother?
What is the speed of the block of clay right after the collision. What impulse does the clay exert on the block.
A uniform rod rotates in a horizontal planeabout a vertical axis through one end. Calculate the angular momentum of the rod about that axis
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