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A person, with weight W = 584N and height 1.25m, is doing pushups on the ground. Their center of gravity is .84m from their feet. Find the Normal Force exerted by the floor on each hand and foot. (Assume he is in equilibrium. If that's the case, use torques to solve for forces. Just remember that the force pushing against the feet and arms will be halved for each hand and foot.)
Show that if a real f(x) is expanded in a complex exponential Fourier series cneinx, then c-n = c?n where C?n means the complex conjugate of cn.
In a jump spike, a volleyball player slams the ball from overhead and toward the opposite floor. Controlling the angle of the spike is difficult. Suppose a ball is spiked from a height of 2.30 m with an initial speed of 18.0 m/s at a downward angl..
Two parallel, very long straight wires separated by 10 centimeter are carrying 2 Amp and 4 Amp in the similar direction. Find where is the magnetic field zero
A brick is thrown upward from the top of a building at an angle of 20° to the horizontal and with an initial speed of 10 m/s. how tall is the building
A police radar has an effective range of 1.3 km, while a motorist's radar detector has a rangeof 1.8 km. The motorist is going160 km/h in a 60km/h zone when the radar detector beeps. At what rate must the motorist decelerate to avoid a speeding ticke..
The wheels, axle, and handles of a wheelbarrow weigh W = 68 N. The load chamber and its contents weigh WL = 605 N. Find the magnitude of the man's force for both designs
A 3.00-cm-diameter parallel-plate capacitor with a spacing of 0.100mm is charged to 500V, What is the total energy stored in the electric field
When a 2.75 kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases uniformly from 10.0 rad/s to 6.30 rad/s in 5.00 s. (a) What is the magnitude of the angular acceleration of the fan?
how to convert ac current to dc current? is there any conversion factor? how to select an autotransformer for dc motors
We describe the index of refraction of a material for sound waves to be the ratio of the speed of sound in air to the speed of sound in the material. Snell's law then applies to the refraction of sound waves. The speed of a sound wave is 1320m/s in w..
Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1400 W/m2. Estimate what would the intensity be at Venus
Our Milky Way galaxy is 100000 ly in diameter. A spaceship crossing the galaxy measures the galaxy's diameter to be a mere 1.0 ly. What is the speed of the spaceship relative to the galaxy
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