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A rocket which has an exhaust speed of 8 km/s is to have a lift off vertical acceleration of 8 m/s^2 from the NASA launch pad. If the initial mass of the rocket is 6x10^6 kg, at what minimum rate must the rocket consume fuel?
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
q1. a flywheel having constant angular acceleration requires 4.60 to rotate through 170. its angular velocity at the
Two objects attract each other gravitationally with a force of 3.0×10-10 N when they are 0.60 m apart. Their total mass is 4.0 kg. Determine their individual masses.
A rod (length = 80 cm) with a rectangular cross section (1.5 mm x 2.0 mm) has a resistance of 0.20 ohms. What is the resistivity of the material used to make the rod
A beam of gamma rays from a distant galaxy is observed through two polarizing filters whose transmission axis is at a 45 degree angle relative to each other here on earth
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. what is the magnitude of the average acceleration of the ball during this time interval
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.95 mm. If a 21.7-V potential difference is applied to these plates, calculate the following. (a) the electric field between the pl..
A car tire is 64.0cm in diameter. The car is traveling at a speed of 16.0m/s. What is the tire's rotation frequency
A 340 kg piano slides 3.7 m down a 33° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.37.
Plutonium decays radioactively by emitting an alpha particle from its nucleus, If the alpha particle comes from the surface of the Plutonium nucleus, what is its greatest acceleration
A 2.3kg wood block is pulled along a wood floor at a steady speed. What is the magnitude of the force pulling on the first block
At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street. find Is the cyclist ahead of or behind the car
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