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Anton claims that he can throw a dart at a dartboard from a distance of 2 meters and hit the 0.5 cm wide bulls eye if he throws the dart horizontally with a speed of 20m/s. He starts the throw at the same height as the top of the bulls eye. Will Anton hit the bulls eye?
Take the mass of the earth to be 5.974x1024 kg, the mass of the sun to be 1.989x1030 kg, What is the gravitational force of the sun on the earth
If a mobile phone in an automobile traveling at 50 m/s approaches a second automobile coming toward it at a speed of 40 m/s, what is the maximum Doppler shift the mobile phone can experience if it receives signals from a base station transmitting ..
A 75.0 kg bungee jumper, tied to a 39.0 m longcord, leaps off a bridge whose deck is 69.0 m above thewater. He falls to 7.0 m above the water before the bungeecord pulls him back up. What is the magnitude of the impulse exerted on the bungee jumpe..
The batteries in a portable CD player are recharged by a unit that plugs into a wall socket. Find what voltage does the secondary coil of the transformer provide
1. Briefly compare the French and the United States approaches to early child care. What are the costs of these two very different systems?
A boat that travels at the speed of 6.75 m/s in still water is to go directly across a river and back. How long does it take to make the round trip
In a tennis serve, a 0.073-kg ball can be accelerated from rest to 41 m/s over a distance of 0.95 m. Find the magnitude of the average force exerted by the racket
A subway train starts from rest at a station and accelerates at a rate of 1.6 m/s^2 for 14 s. It runs at constant speed
A house painter is standing on a uniform, horizontal platform thatis held in equilibrium by two cables attached to supports on the roof. how large is the force exerted by the right-hand cable
A roller coaster car of mass 1102 kg slides on a frictionless track starting at a distance 19.2 m above the bottom of a loop 15 m in diameter. The acceleration of gravity is 9.81 m/s2 If friction is negligible, what is the magnitude of the force o..
A block of mass (m) slides around a circular path inside a conic surface with vertex angle 2 Θ. Find the speed of rotation at a height (h) above the vertex
Two capacitors, of 3.2 and 4.8?F capacitance, are connected in parallel across a 300 V potential difference. Calculate the total energy stored in the capacitors
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