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An astronaut is connected to her spacecraft by a 25 meter long tether cord as she and the spacecraft orbit Earth in a circular path at a speed of 3.0 x 10^3 m/s. At one instant, the voltage measured between the ends of a wire embedded in the cord is measured to be 0.45 Volt. Suppose the longer dimension of the cord is perpendicular to the vertical component of Earth's magnetic field at that instant.
(a) Find the magnitude of the vertical component of Earth's field at this location?
(b) Does the measured voltage change as the system moves from one location to another? Explain.
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
Imagine that the temperature of a 430 g block of aluminum sitting in the sun increases from 273 K to 296 K. By how much has its entropy increased
What is the half-life in days of a radioactive sample with 5.2×1015 atoms and an activity of 5.1×108Bq ? What is the half life in days
A 44-g ball consists of a plastic spherical shell and a water-filled core. the shell has an outside diameter equal to 41.6 mm and an inside diameter equal to 16.5 mm. What is the density of the plastic?
a man lost in a maze makes three consecutive displacements so that at the end of his travel he is right back where he
a stone thrown horizontally from the top of a 12-m tower hits the ground at a point 19 m from the base of the tower.
The intensity of sunlight at the top of the earth's atmosphereis about 1390 W/m2.The distance between the sun and earth is 1.50 x 1011m, What is the intensity of sunlight that reaches the probe
If a 1.00 kg body has an acceleration of 8.29 m/s2 at 79° to the positive direction of the x axis, what is the net force in unit-vector notation
The tension in the string when the ball is at the very bottom of the circle is 4.3 N. At the very bottom of the circle, a very sharp knife is suddenly inserted, to cut the string directly below point of support. How far to the right of where the s..
While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.530 s. Find the force that the blood vessel must exert on the blood
An ideal toroidal solenoid has a cross-sectional area of 0.560cm^2 , a mean radius of 12.0cm , and 1650 turns. What is the self-inductance of this solenoid
Diagnostic ultrasound of frequency 3.03 MHz is used to examine tumors in soft tissue. (a) What is the wavelength in air of such a sound wave? (b) If the speed of sound in tissue is 1340 m/s, what is the wavelength of this wave in tissue? (Take the sp..
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