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a) The distance to a star is approximately 7.60 x 1018 meter. If this star were to burn out today, in how many years would we see it disappear? years
(b) Find how long does it take for sunlight to reach Mars?
minutes
(c) Find how long does it takes for a microwave radar signal to travel from Earth to the Moon and back?
s
(d) Find how long does it take for a radio wave to travel once around the Earth in a great circle, close to the planet's surface?
(e) Find how long does it take for light to reach you from a lightning stroke 8.0 kilometer away?
A wave is moving along a string. The equation giving the displacement y of a point at coordinate x and at time t has the form y = 0.2cos(4pi(x)/5-20pi(t)), Calculate the frequency and the speed(m/s) of the wave
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. how fast is the roller coaster traveling at the bottom of the dip
Two cylindrical glass beads each of mass m = 32 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 3 cm. The coefficient of static friction between the beads and the surface is μs = 0.3. The beads are then gi..
What is magnitude of the angular momentum
Two carts are put back to back on a track. cart A has a spring-loaded piston; cart B which has twice the inertial mass of cart A is entirely passive. when the piston is released, it pushed against cart B and the carts move apart. how do the magnit..
Find the change in volume of an aluminum sphere of 5.2 cm radius when it is heated from 18.0 °C to 296.0 °C. The linear coefficient of thermal expansion of aluminum is 2.300×10-5 /°C.
A hollow spherical shell (radius R) carries a surface potential V(r=R, teta, Phil) = kcos(Squared) teta, sine teta. Find the potential inside and outside of the cylinder, explicitly evaluating the first four nonzero coefficients in each case.
A plane leaves the airport in Galisto and flies 165 at 68.0 east of north and then changes direction to fly 230 at 48.0 south of east, after which it makes an immediate emergency landing in a pasture.
a proportional control system is to be used to control the wing flaps of a jet airplane. the wind load is expected to
A 69.00 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.20. What would be magnitude of the acceleration.
A swimmer heads directly across a river, swimming at 1.9 m/s relative to the water. She arrives at a point 34 m downstream from point directly across the river, which is 80 m wide.
millikan measured the electrons charge by observing tiny charged oil drops in an electric field. each drop had a charge
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