A "laser cannon" of a spacecraft has a beam of cross-sectional area A. The maximum electric field in the beam is 2E. The beam is aimed at an asteroid that is initially moving in the direction of the spacecraft. What is the acceleration of the asteroid relative to the spacecraft if the laser beam strikes the asteroid perpendicularly to its surface, and the surface is not reflecting
Answers: 2
Physics, 23.06.2019 00:30
Arope has one end tied to a vertical support. you hold the other end so that the rope is horizontal. if you move the end of the rope back and forth with a frequency of 4 hz, the transverse wave you produce has a wavelength of 0.5 m. what is the speed of the wave in the rope?
Answers: 1
Physics, 23.06.2019 05:00
City b is south of city a, and the 200 mile trip by car takes 4 hours. the cities are 120 miles apart in a straight line. what is the velocity of a trip from city a to city b?
Answers: 2
Physics, 23.06.2019 05:40
Which of the following can enter and exit a closed system? a. matter and energy b. neither energy nor matter c. matter but not energy d. enrgy but not matter
Answers: 1
Physics, 23.06.2019 06:00
Aforklift raises a box above the floor and does 2,000 j of work. if the forklift motor consumes 3,000 j of electrical energy from the battery to raise the box, what is the efficiency of the lift?
Answers: 2
A "laser cannon" of a spacecraft has a beam of cross-sectional area A. The maximum electric field in...
English, 10.03.2021 02:50
History, 10.03.2021 02:50
Mathematics, 10.03.2021 02:50
Social Studies, 10.03.2021 02:50
Mathematics, 10.03.2021 02:50
Mathematics, 10.03.2021 02:50
Social Studies, 10.03.2021 02:50
Mathematics, 10.03.2021 02:50
Mathematics, 10.03.2021 02:50
Mathematics, 10.03.2021 02:50
History, 10.03.2021 02:50