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A steel beam 10m long is installed in a structure at 20 degrees C. What are the beam's changes in length at the temperature extreme -30 degrees C to 45 degrees C?
A pump of 2 kW output power discharges water from a cellar into astreet that is 6m above. At what rate (in liters per second) is thecellar emptied
two students stand poised to leap off a high dive structure into teh swimming pool below. Student B is twice as massive as student A. Find the magnitude of velocity of canoe relative to river.
Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 2.6 m/s2. Identify the force.
Two equally charged particles, held 3.4 × 10-3 m apart, are released from rest, what are the mass of the second particle and, the magnitude of the charge of each particle
a disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. at one
A converging lens of focal length 8.020 cm is 20.3 cm to the left of a diverging lens of focal length -6.47 cm. Find the magnification of the coin's final image
A Metra train is moving at a speed of 25.0 m/s. As it approaches astation its horn emits a sound of frequency 750. Hz. Calculate the frequency detected by a personstanding still at the station.
a photon of wavelength 0.55000 nm strikes a free electron that is initially at rest. the photon is scattered straight
in 1971 astronaut alan shepard took a golf club to the moon where the acceleration due togravity is about g6. if he
A(n) 19_kg object floating in water has 0.24 of its volume above the surface of the water. What is the volume of the object
Astronomers have discovered a planetary system orbiting the star Upsilon Andromedae, which is at a distance 4.2 multiplied by 1017 m from the earth. One planet is believed to be located at a distance of 1.6 1011 m from the star.
Two isotopes of a certain element have binding energies that differ by 4.7540 MeV. The isotope with the larger binding energy contains one more neutron than the other isotope. Find the difference in atomic mass between the two isotopes
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