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Two astronauts are, 3.18 m apart in their spaceship, speaking to each other. The conversation is transmitted to Earth via electromagnetic waves traveling at the speed of light. The time it takes for the sounds waves to travel at 343 m/s through the air between the astronauts equals the time it takes for the electromagnetic waves to travel to the Earth. How far away from the Earth is the spaceship?
Objects A and B are both positively charged. Both have a mass of 400g , but A has twice the charge of B. When A and B are placed 25cm apart, B experiences an electric force of 0.54N . What is the charge on A? If the objects are released, what is t..
define the hazards for astronauts inside any spacecraft moving in the vicinity of a pulsar.
A noisy grinding machine in a factory produces a sound intensity of 1.0 x 10^-5 Watts/meter^2. Deteremine the sound intensity level
A metal sphere is suspended by a silk thread and charged positively. If in carrying a positive charge of 5.0E-8 C, what is the potential difference between the ground and the sphere
The lengths of the three telescopes are LA = 434 mm, LB = 653 mm, Find the angular magnification of each telescope
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, What is the focal length of the second lens
A 100 kg shot-putter pushes a forward and upward force on a 4 kg shot with a force of 1000N, Calculate the vertical and horizontal components of this resultant force
Assuming that the pass was thrown at the optimal 45 ^circ angle, evaluate what was the speed at which the ball left the quarterback's hand?
what common temperature must the two pieces be heated.
a sound wave of frequency 1225 hz travels through the air directly toward a wall, what is the initial wavelength of the sound
An exoplanet of mass 7.4e26 kg orbits its parent star at an angle of inclination of 28.9 degrees. determine the period of the exoplanet in days
Three 1.2 kg masses are located at the vertices of an equilateral triangle 88 rm cm on a side, connected by rods of negligible mass. Find out the rotational inertia of this object.
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