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A star is 4.94 × 1020 m from the Earth. If this star was to burn out today, how many years would it take before we would see it disappear?
Time (in years):
At a certain point on Earth's surface in the southern hemisphere, the magnetic field has a magnitude of 4.9 10-5 T and points upward and toward the north at an angle of 56° above the horizontal. compute the magnitude and direction of the force on t..
A mass-spring system has k = 55.2N/m and m = 0.405kg. Find the frequency of its simple harmonic motion
You throw a 25.0 rock into the air from ground level and observe that, when it is 12.0 high, it is traveling upward at 17.0, Use the work-energy principle to find the rock's speed just as it left the ground
A block of unknown mass is attached to a spring of spring constant 7.9 N/m and undergoes simple harmonic motion with an amplitude of 13.2 cm. Calculate the mass of the block
Find the velocity vector of a bag just before it hits the ground. It is dropped 500m above the ground and has velocity 5 m/s
A racetrack is to have a banked curve with radius 225 m. What should be the angle of the bank if the normal force alone is to allow safe travel around the curve at 56.0 m/s
Find the center of mass of a system composed of three spherical objects with mass of 3.0kg, 2.0kg, and 4.0kg
The pressure inside a gas bottle at 23.4 °C is 4350 kPa. What will be the pressure inside the bottle
A rocket of mass 3.95 × 105 kg is in flight near earth's surface. Its thrust is directed at an angle of 54.7° above the horizontal, compute the direction of the rocket's acceleration
A flat conductor of thickness 0.500 mm is placed in a magnetic field of 0.200 T perpendicular to the flat surface. what is the Hall voltage generated when 3.40 A flows along the conductor
A wheel of radius 0.390 m starts from rest and accelerates uniformly to an angular speed of 17.0 rad/s in 4.00 s. Calculate the angular displacement of the wheel
A half-open pipe is constructed to produce a fundamental frequency of 274 Hz when the air temperature is 20 °C. It is used in an overheated building when the temperature is 37 °C. Neglecting thermal expansion in the pipe, what frequency will be heard..
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