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Hiking in the mountains, (the temperature is 20oC) you shout "hey", wait 1.55 s and shout again.
a) What is the distance between the sound waves you cause?
b) If you hear the first echo after 5.81 s, what is the distance between you and the point where your voice hit a mountain?
calculate the de broglie wavelength for each of the following. a a proton with a velocity 95 of the speed of light. b
A 300 gram chunk of clay is thrown at a door with a velocity of 10 m/s. The clay sticks to the door. Determine whether the interaction is elastic
An electron is released near a (a) point charge, (b) an charged line of infinite length, or (c) an infinite charged plane. In which of these cases does the electron undergo constant acceleration?
The cornea of an average human eye has a refractive power of about 40 diopters. To what focal length does this value correspond? How does this focal length compare to the size of the eye?
A circular conducting loop is held fixed in a uniform magnetic field that varies in time according to B(t) = B0exp(−a t) where t is in s, a is in s−1 and B is the field strength in T at t = 0. At t = 0, the emf induced in the loop is 0.0661 V. At t =..
Transverse waves on a string have wave speed v=8m/s , amplitude A=0.0700 m , and wavelength lambda= 0.320 m . The waves travel in the -x direction, and at t = 0 the x = 0 end of the string has its maximum upward displacement.
A curved mirror has a focal point. Images form at the focal point, right? But I've seen problems where this is not true. I am really confused. Can you help clear me up? What is the point of the focal point and where is the image if I am wrong??
The potential difference between the surface of a 3.1 cm diameter power line and a point 1.8 m distant is 5.0 kV. What is the line charge density on the power line
a spring is mounted from the ceiling. as a mass is attached the spring stretches 1.04 m. the spring is then stretched
The International Space Station is orbiting the Earth at an altitude of about 340 Km above the Earth's surface, find the size of the tangential velocity of the Space Station
A 110 volt hair dryer has 2 settings: 850 watts and 1250 watts. Determine the resistance of the dryer for both settings
Two satellites are in circular orbits around the earth. Find the orbital speed for Satellite
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