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The identical twins Speedo and Goslo join a migration from the Earth to Planet X. It is 20.0 light-years away in a reference frame in which both planets are at rest. The twins, of the same age, depart at the same time on dissimilar spacecraft. Speedo's craft travels steadily at 0.880c, Goslo’s at 0.720c. Compute the age difference between the twins after Goslo's spacecraft landson Planet X. Which twin is the older?
three capacitors 4.0 6.0 and 8.0 microf are connected in series across a 50.0 v battery. find the voltage across the
A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of 0.253 mL/s
If a 12 V battery is used to charge this capacitor, what is the total charge stored what is the magnitude of the electric field between the plates what is the energy stored on the capacitor
A beetle 4.80mm is examined with magnifier of focal length 10.3 cm. If the observer's eye is relaxed while using the magnifier, what is the apparent length of the beetle
At 14.7 g mass is attached to a frictionless, horizontal spring. After the spring was stretched a certain distance and released, what is the oscillation frequency of the spring
Consider a neutron star whose mass is twice the mass of the Sun and whose radius is 14.1 km. What is the radius of the geostationary orbit for this neutron star
A 1.5kg weight hangs from a 8.0kg, solid wheel with a 20 cm circumfrence by a thin string wrapped several times around the circumfrence. How fast (in radians/second) is the wheel turning just before the weight hits the floor
A person holds a ladder horizontally at its center. Treating ladder as a uniform rod of length 3.30 m and mass 7.43 kg, find out the torque the person must exert on the ladder to give it an angular acceleration of 0.405 rad/s2.
q1. two thin wedding bands each with mass m and radius r are welded together so that each ring passes through the
Do sound waves exhibit diffraction effects? If so, determine the "slit" width that would diffract an audible sound wave (frequency between 20 Hz and 20 kHz). Would a doorway work or do you need a different sized opening?
The electric potential at a position located a distance of 19.5 mm from a positive point charge of 8.10x10-9C and 10.3 mm from a second point charge is 1.30kV
The security alarm on a parked car goes off and produces a frequency of 1200 Hz. The speed of sound is 343 m/s. At what speed are you driving
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