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A boxer receives a horizontal blow to the head that topples him over. The force, of magnitude 1.35 x 103 N, is applied for 1.7 x 10-2 s at a point 1.67 m above the floor. The boxer has a moment of inertia of 79.2 kg · m2 for rotation about an axis at his feet.
(a) Find the boxer's final angular velocity.
(b) How long would it take him to hit the floor if he continued with the same angular velocity?
Why does his angular velocity as he falls?
A mass of 3.2 kg sliding along a frictionless floor at 2.5 m/s strikes and compresses a spring of constant k = 290.00 N/m. The spring stops the mass. How long does the mass take to stop
A conducting spherical shell of inner radius of a and outer radius b carries a net charge Q. find the surface charge density on the outer surface of the shell
The focal length of the objective and eyepiece in a compound microscope are 0.8 cm and 2.5 cm, respectively. What is the total magnification
A transverse sinusoidal wave on a string has a period T = 45.0 ms and travels in the negative x direction with a speed of 30.0 m/s, What is the maximum transverse speed of the string
If I0 is the intensity of the unpolarized light incident on the first polarizer, and I1 and I2 denote the intensity of the light after the first and second polarizers, which of the following quantities are known
Your toaster has a power cord with a resistance of 2.2×10?2 connected in series with a 9.9 nichrome heating element. How much power is dissipated in the power cord
a radio wave, sent from mars to the earthwhen the two are closest to eachother, takes 3.03 minutes. calculate the distance between perihelion and aphelion for mars
A certain type of laser emits light that has a frequency of 6.0 × 1014 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.8 × 10-11 s. How many wavelengths are there in one pulse
a spherical ball with a radius of 2.660times10-1 m is completely submerged in a fluid that has a density of
A horse is capable of moving at four different speeds: walk (1.9 m/s), trot (5.0 m/s), canter (7.0 m/s), and gallop (12 m/s). Ann is learning how to ride a horse. She spends 15 minutes riding at a walk and 1.8 minutes at each other speed.
A 7.00 \mu F, parallel-plate, air capacitor has a plate separation of 4.50 mm and is charged to a potential difference of 400 V
When an electric circuit is being assembled, a common practice is to twist together two wires carrying equal currents in opposite direction
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