(9%) Problem 11: Laser beams are sometimes used to burn away cancerous tissue. 100% Part...

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(9%) Problem 11: Laser beams are sometimes used to burn away cancerous tissue. ▷ 100% Part (a) What is the intensity, in watts per square meter, of a laser beam that is 90.0% absorbed by a 1.95-mm diameter spot of cancerous tissue and must deposit 495 J of energy to it in a time period of 4.15 s? I= Submission History Answer I=6.82 10-3 1=0.00682 1 Submit Hints: 4% deduction per hint. Hints remaining: 1 2 3 I=11094187.39 I=1.109E+7 tan() acos()) sinh() tanh() cotanh() Degrees O Radians 1-4437675 I=443800 cos() asin() sin() cotan() atan() acotan() cosh() 2% 2% 2% Hint Hints Л ( 7 8 9 4 5 6 M^^ E * 1 2 3 + 0 VO BACKSPACE 0% 0% . Feedback I give up! Feedback: 5% deduction per feedback. Feedback HOME IND Note: Feedback not accessed. Note: Feedback not accessed. Grade Summary Deductions Potential Submissions Attempts remaining: 7 (2% per attempt) detailed view 123 0% 0% 6% 94% 2% 2% 2% Totals 2% 2% 2% (9%) Problem 11: Laser beams are sometimes used to burn away cancerous tissue. ▷ 100% Part (a) What is the intensity, in watts per square meter, of a laser beam that is 90.0% absorbed by a 1.95-mm diameter spot of cancerous tissue and must deposit 495 J of energy to it in a time period of 4.15 s? I= Submission History Answer I=6.82 10-3 1=0.00682 1 Submit Hints: 4% deduction per hint. Hints remaining: 1 2 3 I=11094187.39 I=1.109E+7 tan() acos()) sinh() tanh() cotanh() Degrees O Radians 1-4437675 I=443800 cos() asin() sin() cotan() atan() acotan() cosh() 2% 2% 2% Hint Hints Л ( 7 8 9 4 5 6 M^^ E * 1 2 3 + 0 VO BACKSPACE 0% 0% . Feedback I give up! Feedback: 5% deduction per feedback. Feedback HOME IND Note: Feedback not accessed. Note: Feedback not accessed. Grade Summary Deductions Potential Submissions Attempts remaining: 7 (2% per attempt) detailed view 123 0% 0% 6% 94% 2% 2% 2% Totals 2% 2% 2%

Answer rating: 100% (QA)

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