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In February 1955, aparatrooper fell 370 m from anairplane without being able to open his chute but happened to landin snow, suffering only minor injuries. Assume that his speed atimpact was 60 m/s (terminal speed),that his mass (including gear) was 80kg, and that the force on him from the snow was at the survivablelimit of 1.2 105 N.
(a) What is the minimum depth of snow that would havestopped him safely?
m
(b) What is the magnitude of the impulse on him from the snow?
kgm/s
The number of protons in the known universe is about 10^80, and the radius of a proton is about 10^-15m. Estimate the volume of a sphere containing all of these protons if they were placed in contact with each other
a sample consisting of 1.5 mol of perfect gas molecules with cpm= 20.8J/Kmol is initally at 230kPa and 315 K. calculate the final volume and temperature and work done
A solenoid is designed to prodcue a 2.78*10^-2 T magnetic field near its center. It has a radious of 1.4cm, What total length of wire is required to make this solenoid
A yo-yo has a rotational inertia of 1140 g·cm2 and a mass of 81.3 g. Its axle radius is 3.27 mm, and its string is 106 cm long, translational kinetic energy, rotational kinetic energy
How many time constants (a decimal number) must elapse before a capacitor in a series RC circuit is charged to 75.0% of its equilibrium charge
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). The transformer is to deliver 2000 kW to the factory at 95% efficiency. Find values for the the power delivered to the primary
A logic circuit has two 2-bit unsigned binary numbers X[1:0] and Y[1:0] as the inputs and it has two 1-bit outputs. One of the outputs is ONE_GTR and the other is X1_XOR_Y1.
Four particles with masses 8 kg, 4 kg, 2kg, and 2kg are connected by rigid rods of negligible mass as shown. calculate the moment of inertia of the system about the z axis
a truck driver transporting new cars needs to roll the cars off the truck. you offer to design a ramp to help with that
throughout the process the mechanical device pushing the piston to compress gas is found to expend 4 kJ of energy. What is the magnitude of the heat flow between heat reservoir and the gas and in what direction does the heat flow occur.
A potential difference of 81 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the ce..
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and magnitude of one charge is cut in half, what is the new force between them.
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