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A 125-kg (including all the contents) rocket bas an engine that produces a constant vertical force (the thrust) of 1720 N. Inside this rocket, a 15.5-N electrical power supply rests on the floor.
(a) Find the acceleration of the rocket.
(b) When it has reached an altitude of 120 In, how bard does the Hour push on the power supply? (Hint: Start with a free-body diagram for the power supply.)
an earthquake produces two basic types of waves surface waves and bulk waves. the former move along the surface of the
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), what is the angle of refraction for each wavelength
When operated on a household 110.0-V line, typical hair dryers draw about 1550 W of power, What is the current in the dryer and What is the resistance of the dryer
A satellite moves in a circular orbit around Earth at a speed of 5918 m/s? Determine the period of the satellite's orbit
Biomedical measurements show that the arms and hands together typically make up 13.0 of a person's mass, while the legs and feet together account for 37.0. find the average angular velocity of his arms and legs
Find the wavelength of red light in glass if the index of refraction of glass is 1.66. Recall that the wavelength of red light in a vacuum is 700 nm
An iron casting containing a number of cavities weighs 16967.7 N in air and 13045.8 N in water. What is the total volume of all the cavities in the casting
Calculate the amount of work (in electron-volts) it would take to move an electron from 11.6 to 13.4 away from a +3.50 point charge.
What must be the radius of a circular loop of wire so the magnetic field at its center is 1.40 10-4 T when the loop carries a current of 17 A
A spring with an unstrained length of 0.069 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
What is a typical neutron star density
A dolphin emits ultrasound at 100 kHz} and uses the timing of reflections to determine the position of objects in the water
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