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To determine the center of mass of her body, a student lies on aplank of mass m=10 kg. The plank is supported by two scales at itsends. The distance between the scales is 2.5 meters. The left scalereads 339 N and the right reads 171 N.
a) Find the weight of the person in Newtons.b) Find the distance from the student's head to her center ofmass.
A certain substance has a mass per mole of 36 g/mol. When 319 J is added as heat to a 35.0 g sample of this material, How many moles of the substance are present
In 2.8 days the number of radioactive nuclei decreases to one-eighth the number present initially
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, compute the magnitude of the impulse on him from the snow?
Since you are pulling up a little on the crate, the floor doesn't have to support as much weight. When you are pulling up on the rope as described above, what is the upward force that the floor exerts on the crate.
On an ice rink, two skaters of equal mass grab hands and spin in a mutual circle once every 2.6s. how hard are they pulling on one another
The Earth (5.98 x 10^24 kg) and the Moon (7.35 x 10^22) kg are separated by an average distance of 3.84 x 10^8 m
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. Find the magnitude of the last leg of the journey
Two capacitors, C1 = 4.00 µF and C2 = 13.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. Find the equivalent capacitance of the combination
A rigid tank contains 1.20 moles of an ideal gas. Determine the number of moles of gas that must be with Illustrate from the tank to lower the pressure of the gas from 24.2 atm to 5.30 atm. suppose the volume of the tank and the temperature of the..
A block of mass m = 2.00 kg is attached to a spring of force constant k = 415 N/m, Find the speed the block has as it passes through equilibrium
Consider a rocket which has two combustion rates, ?1 = 4 kg/s and ?2 = 8 kg/s. The relative speed of the exhaust gas is 90 m/s in either case. Determine the final speed of the rocket
Assuming the Earth's magnetic field averages about 0.50*10^-4 T near the surface of the Earth, estimate the total energy stored in this field
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