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You are trying to hit a cart of mass 0.3 kg on a frictionless table with a toy projectile launcher. At the moment you want tot fire, the cart is a distance 0.6 m directly North of your launcher that is traveling due East with an instantaneous speed of 0.8 m/s. The projectile has a mass of 0.3 kg and is launched with a speed of 1.4 m/s, and slides along the table frictionlessly. At what angle relative to North do you want to fire the projectile?
A straight horizontal wire carries a current of 6.50 μA. An electron is moving above the wire the direction parallel to it and in the same direction as the conventional current in the wire.
A 62 g Frisbee is thrown from a point 1.3 m above the ground with a speed of 15 m/s. What was the reduction in the mechanical energy of the Frisbee-Earth system because of air drag
Explain the concepts behind the gravitational constant, gc. Define the constant mathematically.
A rock is thrown vertically upward from ground level at time t = 0. At t = 1.9 s it passes the top of a tall tower, What is the height of the tower
A 2.5 cm-long horizontal wire segment has mass 0.15 g and carries a current sufficiently large that it levitates when the segment is in a region of B field upward with magnitude 1.5 T
The force of the wind on the sails of a sailboat is 300 N north. The water exerts a force of 210 N east. If the boat (including crew) has a mass of 310 kg, illustrate what are the magnitude and direction of its acceleration?
Assume that the only force acting on him throughout the collision is that as a result of the ground.
two rooms, one at 30 degree Celsius and the other at 10 degrees Celsius, Calculate the total power output of lit light bulbs required in the warmer room
A sound wave in our classroom has speed of 380 m/s. There is a speaker at each end of the table that has 4.0 m length. What is the minimum phase difference between the waves arriving to you from the two speakers
The Hall effect can be used to determine the density of mobile electrons in a conductor, Find the density of mobile electrons in the material
A generator has a 170-turn square coil, 4cm on a side. Find the peak emf in this coil when it's rotating at 95.0Hz in a strong 6.1T field
A negative charge -0.550 µC exerts an upward 0.600 N force on an unknown charge 0.210 m directly below it. What is the unknown charge (magnitude and sign)
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