   # Integrated Concepts The Tethered Satellite discussed in this module is producing 5.00 kV, and a current of 10.0 A flows. (a) What magnetic drag force does this produce if the system is moving at 7.80 km/s? (b) How much kinetic energy is removed from the system in 1.00 h, neglecting any change in attitude or velocity during that time? (c) What is the change in velocity if the mass of the system is 100,000 kg? (d) Discuss the long term consequences (say, a week-long mission) on the space shuttle’s orbit, noting what effect a decrease in velocity has and assessing the magnitude of the effect. ### College Physics

1st Edition
Paul Peter Urone + 1 other
Publisher: OpenStax College
ISBN: 9781938168000

#### Solutions

Chapter
Section ### College Physics

1st Edition
Paul Peter Urone + 1 other
Publisher: OpenStax College
ISBN: 9781938168000
Chapter 23, Problem 25PE
Textbook Problem
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## Integrated ConceptsThe Tethered Satellite discussed in this module is producing 5.00 kV, and a current of 10.0 A flows. (a) What magnetic drag force does this produce if the system is moving at 7.80 km/s? (b) How much kinetic energy is removed from the system in 1.00 h, neglecting any change in attitude or velocity during that time? (c) What is the change in velocity if the mass of the system is 100,000 kg? (d) Discuss the long term consequences (say, a week-long mission) on the space shuttle’s orbit, noting what effect a decrease in velocity has and assessing the magnitude of the effect.

To determine

(a)

The magnetic drag force for the system.

### Explanation of Solution

Given:

emf=5kV=5×103VI=10Av=7.80km/s=7.80×103m/s

Tethered Satellite

Concept Used:

Magnetic force is given as:

F=IlB , where Iis the current, lis the length and Bis the magnetic field.

Emf is given as:

emf=Blv , where Bis the magnetic field, l is the length and vis the velocity.

Calculation:

Emf is given as:

emf=Blvemf=5kV=5×103Vv=7

To determine

(b)

The removed kinetic energy from the system in 1.00h.

To determine

(c)

The change in velocity if the mass of the system is 100,000kg.

To determine

(d)

The effect a decrease in velocity has and assessing the magnitude of the effect on a long-term consequence (say, a week-long mission) on the space shuttle's orbit, noting effect a decrease in velocity has and assessing the magnitude of the effect.

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