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Consider a carwith front cross-sectional area of A=(1.77 ± 0.02)m^2 and a drag coefficient of C=(0.38±-0.02) moving with a speed of v=(10.0±0.5)m/s. Suppose that the density of air is p=1.20 kg/m^3 at the sea level. calculate the force F=(1/2)CApv^2 on the car due to air friction.
A 102 kilogram fireman slides down a pole to the ground floor, 3.3 meter below. The fireman starts at rest and lands with a speed of 4.2m/s. find the average force exerted on the fireman by the pole
A beam of particles is directed at a 0.017-kg tumor. There are 2.1x10^10 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 19s
an air-filled parallel-plate capacitor has a surface area of 7.60 cm2 separated by a distance of 1.80 mm. a 20.0 v
The image produced by a concave mirror is located 25 cm in front of the mirror. How far in front of the mirror is the object located
a pendulum is made with a 4 kg mass suspended at the end of a 75 cm thin rod. the pendulum started at an angle of 20
Water has the following thermodynamic constants: (1) specific heat liquid = 4.18 J/g °C, solid = 2.09 J/g °C, gas = 1.89 J/g °C, (2) heat of fusion = 334 J/g, and (3) heat of vaporization = 2257 J/g. how much heat is required to melt the sample
A flat uniform circular disk (radius = 2.00 meter, mass = 1.00x10^2 kilogram) is initially stationary. Evaluate the resulting angular speed of the disk (in rad/s) and explain the direction of the rotation
A driver travels northbound on a highway at a speed of 25.0m/s. What frequency does the driver observe as the police car approaches
A jeweler working with a heated 47 g gold ring should lower the ring's temperature to make it safe to handle. If the ring is initially at 99 degrees Celcius, what mass of water at 25 degrees Celcuis is needed to lower the ring's temperature to 38 ..
A 5 g bullet with an initial velocity of 95 m/s lodges in a block of wood and comes to rest at a distance of 6 cm. assume the bullet undergoes a constant negative acceleration; it slows at a constant rate. How much time does it take for bullet to ..
Determine how much work must you do to push a 10 kilogram block of steel across a steel table (k=0.6) at a steady speed of 1.10 m/s for 6.50 second
Computing the kinetic energy, takeoff speed, and kinetic energy per kilogram.
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