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A 461.1N child and a 114N child sit on either end of a 2.9m long seesaw. suppose a 280N child sits .196m from the 461.4N child. how far from the pivot must a 218N child sit to maintain rotational equilibrium? answer in units of m
A transformer with 120. turns in its secondary supplies 12. volts at 220. ma to a toy train. The primary is connected across a 120. V wall outlet. What power is delivered by the wall outlet
The earth is 1.49*10^11 meters from the sun. If the solar radiation at the top of the earths atmosphere is 1340 W/m^2, what is the total power output of the sun
Airplane emf A Boeing KC-135A airplane has a wingspan of 39.9 m and flies at constant altitude in a northerly direction with a speed of 840 km/hr. what is the induced emf between the wing tips
The wavelength of the waves in seawater is 4.80 x10-4 m. While the generator is directed downward, an echo reflected from the ocean floor is received 10s later.
A point charge causes an electric flux of -760 N·m2/C to pass through a spherical Gaussian surface of 15.0 cm radius centered on the charge. how much flux would pass through the surface
The intensity of the Sun's light in the vicinity of the Earth is about 930 W/m2. Imagine a spacecraft with a mirroredsquare sail of dimension 1.22 km. Estimate how much thrust (innewtons) this craft will experience due to collisions with theSun's ..
a ball is thrown upward from the roof of a building, passes the roof going down three seconds later, how fast did the ball strike the ground
A 50 g ball isreleased from rest 1.0 m above the bottom of the track shown in the figure . It rolls down a straight 30 degree, segment, then back up a parabolic segment whose shape is given byy=1/4x2, where x and y are in meters.
One end of a brass bar is maintained at 305 oC, while the other end is kept at a constant, but lower, temperature. What is the temperature of the bar at a point 0.129 m from the hot end
A boy pulls due east with a force of 200 N on a box. A girl pulls due South with a force of 400 N. What is the magnitude of the net force on the box
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A small container of water is placed on a carousel inside a microwave oven, at a radius of 14.0 cm from the center. What angle does the water surface make with the horizontal
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