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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 laser emits a cylindrical beam of light 2.8mm in diameter.If the average power of the laser is 2.6mW , what is the rms value of the electric field in the laser beam?
You slide a box of books at constant speed up a 30 degree ramp, applying a force of 170N directed up the slope. What is the mass of the box
an infinitely long line of charge has a linear charge density of 5.00times10?12 cm. a proton is at distance 12.0 cm
Explain why the electrostatic interaction in ionic solids would (if alone) result in the collapse of the crystal to zero size and what it is that prevents this collapse in real crystals (be sure to be explicit)
A kid of mass 20 kg is playing with a swing by an arm length of 5 m. His sister first pushes him such that the maximum angular deviation from vertical position is 0.2 radians (11.46 deg.).
A small metal sphere has a mass of 0.15 g and a charge of -23.0 nC. It is 10.0 cm directly above an identical sphere with the same charge. This lower sphere is fixed and cannot move. What is the magnitude of the force among the spheres?
Assume that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision.
describe the various ways that you encounter and utilize different em radiation in your daily life.original work
A paddle wheel frictionally adds thermal energy to an ideal monatomic gas in a sealed, insulated container. How many moles of gas must be present in this container
speedboat a negotiates a curve whose radius is 156 m. speedboat b negotiates a curve whose radius is 238 m. each boat
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 365 cal/g.
The maximum acceleration of a fast freight elevator is 4.5 m/s2. The maximum load of the elevator is 6,651 kg, and the elevator has a mass of 466 kg. If a steel cable is to be used suspend the elevator, what should the minimum diameter be? The elasti..
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