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The total cross-sectional area of the load-bearing calcified portion of the two forearm bones (radius and ulna) is approximately 2.7 cm2. During a car crash, the forearm is slammed against the dashboard. The arm comes to rest from an initial speed of 80 km/h in 4.8 ms. If the arm has an effective mass of 3.0 kg, what is the compressional stress that the arm withstands during the crash?
Find the resistance between points A and B. A car starts from rest on a curve with a radius of 130 m and accelerates at 0.500 m/s^2. How many revolutions will the car have gone through as the magnitude of its total acceleration is 2.50 m/s^2.
Briefly describe: (a) Charging by friction (b) Charging by contact (c) Charging by induction *In one sentence if possible.
Draw vectors indicating the normal force. suppose that the weight of the femur is negligible compared to the applied downward force.
Snowboarder Sherry of mass m is pulled up a slope at constant velocity v by a tow bar. The force of the tow bar is parallel to the slope, which is inclined at (theta) with respect to the horizontal. The coefficient of kinetic friction between the ..
A partial record of a freely falling body showed only 3 consecutive points. The distance from the first to the second point was 24.550 cm. that from the first to the third was 58.92 cm.
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops that have a typical radius of 10µm. For that range, give the lower value and the higher value, respectively, for the following.
A 51kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 250N. For the first 10.5m the floor is frictionless, and for the next 10.5m the coefficient of friction is 0.18. What is the final speed of the crate af..
A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.2 atm to 5.90 atm. Assume the volume of the tank and the temperature of the gas re..
A space station is constructed in the shape of a wheel 16 rm m in diameter, with essentially all of its 6.0×10^5 rm kg mass at the rim.
What is the average speed of a rider on this Ferris wheel.
An arrow is fire with a speed of 20m/s at the block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into the block before coming to rest relative to it.
A rock with mass m = 3.70 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 19.3 N and by a fluid resistance force.
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