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Can Mars be in inferior conjunction with the Earth? Explain. Is the Earth a perfect sphere? Explain. Approximately how many times greater is the Earth's albedo than that of the Moon?
a target in a shooting range gallery of a square wooden board of side length s 0.500 meter and mass mt 0.750 kg that
Two resistors (connected in series with each other) and a 18 Vbattery are connected in a loop. The voltage drop across the firstresistor is 7 V. What is the voltage drop across the secondresistor?
A wooden block of mass M resting on a frictionless, horizontal surface is attached to a rigid rod of length and of negligible mass. Rod is pivoted at the other end. A bullet of mass m traveling parallel to the horizontal surface and perpendicular to ..
liquid water at 20 degrees c has a constant pressure mass specific heat of cp4181.8. suppose that 1kg of liquid water
Two balls of the same mass are accelerated by different net forces such that one ball gains a velocity twice that of the other ball in the process. Is the work done by the net force acting on the faster moving ball twice that done on the slower mo..
A star ship approaches its home planet at a speed of 0.1c. When it is 5.4×107km away, it uses its green laser beam (=540nm) to signal its approach. How long does the signal take to travel to the home planet? At what wavelength is the signal detected ..
There are approximately 120 million TVs in the United States. Each uses, on average, 75 W of power, how much money is spent every day in keeping the TVs turned on
You combine two thin lenses by placing them in contact so that their axes coincide, Find the focal length of this compound lens
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70 F, r = 0.75), and will subside on the e..
Apply Gauss s law to determine the magnitude and direction of the electric field at the radial point. r = 30 cm from the common center of spheres.
An iron bar of mass, 0.81 kg, slides down a frictionless incline 0.39 m high. At the bottom of the incline it collides and sticks to a magnet of mass, 0.87 kg. What is the speed of the combined masses after collision.
In an electric shaver, the blade moves back and forth over a distance of 2.0 mm. The motion is simple harmonic, with frequency 92 Hz. (a) Find the amplitude. mm (b) Find the maximum blade speed. m/s (c) Find the magnitude of the maximum blade acceler..
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