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A child launches an air powered toy rocket up into the air giving it an initial velocity of 6m/s at an angle of 80degree above the horizontal. If we consider the coordinate system as shown in Figure 1 (where the launch point is at the origin) and neglecting air resistance,
a) What is the velocity (both x and y component) of the rocket 0.8seconds after it has been launched?
b) How long after the rocket is launched does it take for the rocket to hit the ground?
A closed loop of wire is given the shape of a circle with a radius of 0.483 m. find the magnitude of the average induced emf in the wire during this time
A muon is an elementary particle that can be interpreted as the electron's big brother. Calculate its "Compton Wavelength"
find the angular speed after the grindstone. what must be its minimum mass so that material on its surface remains in place during the rapid rotation.
The average lifetime of a muon is about 2 µs. Estimate the minimum uncertainty in the rest energy of a muon
If the far end of the iron rod is in an ice bath at 0°C, find the rate of heat transfer passing from the boiling water to the ice bath. Suppose there is no heat loss to the surrounding air.
Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. what force does the seat belt exert on each driver
a block of mass 12.0 kg is connected to a spring on a horizontal frictionless surface. write the expression for the position of the block as the function of time
A weightlifter bench-presses a 130.0 kg barbell from his chest to a height equal the length of his arms 0.850 m. How many food calories does the weightlifter use if he does this lift 35 times
A grating that has 3400 slits per cm produces a third-order fringe at a 24.0? angle. What wavelength of light is being used
According to a crude model, the 11B nucleus is a uniform solid sphere of mass 1.83*10^-26 kg and radius 2.67*10^-15 m which spins about its diameter. what is the angular velocity of the boron nucleus
Water flows in a pipe that has a 4 ft diameter and the following hypothetical velocity distribution: what is the discharge in cubic feet per second
A cat stands on a board of wood in a frozen frictionless pond. The mass of the cat is 4.0 kg, and the mass of the board is 3.0 kg. how far does the cat move in relation to the pond
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