Homework Answers
standard angle
x = arctan ( 9/4)
x = 66 deg below horizontal
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After deploying her parachute, a skydiver falls through the air with a constant speed of 9.00...
A skydiver jumps from a plane and deploys her parachute. Do not neglect air resistance. After...
A skydiver jumps from a plane and deploys her parachute. Do not neglect air resistance. After the parachute is deployed, will the sum of kinetic energy plus potential energy be conserved (K+P=constant)? Why/why not?
(17%) Problem 6: A 65-kg skydiver jumps out of an airplane and falls 490 m, reaching...
(17%) Problem 6: A 65-kg skydiver jumps out of an airplane and falls 490 m, reaching a maximum speed of 59 m/s before opening her parachute. Randomized Variables m= 65 kg h= 490 m v=59 m/s 50% Part (a) How much work, in joules, did air resistance do on the skydiver before she opened her parachute? Grade Summary Deductions 0% Potential 100% ( | E sin() cos() tan() cotan asin() acos atan) acotan sinh) cosh tanh cotanh Degrees O Radians...
For 7-9: A skydiver falls ot constant, terminal velocity in the presence of air resistance 7....
For 7-9: A skydiver falls ot constant, terminal velocity in the presence of air resistance 7. (3 pts) The net work done on the skydiver is.. a) positive b) negative c) zero 8. (3 pts) The non-conservative work done on the skydiver is.. a) positive b) negative c) zero 9. (3 pts) The mechanical energy of the skydiver is. a) conserved c) decreasing b) increasing For each problem, show all work for full credit. Use at least three significant figures...
For a human body falling though air in a spread-eagle position, the numerical value of the...
For a human body falling though air in a spread-eagle position, the numerical value of the constant D is about D = 0.250 kg/m Part A What value of D is required to make ut = 43.0 m/s the terminal velocity of a skydiver of mass 76.0 kg Express your answer using two significant figures. EVO AEO ? kg/m Submit Request Answer Part B If the sky diver's daughter, whose mass is 46.0 kg, is falling through the air and...
A hot-air balloonist, rising vertically with a constant speed of 5.00 m/s , releases a sandbag...
A hot-air balloonist, rising vertically with a constant speed of
5.00 m/s , releases a sandbag at the instant the balloon is 40.0 m
above the ground. (See (Figure 1)) After it is released, the
sandbag encounters no appreciable air drag.
**only need help with parts E-J
Part A Compute the position of the sandbag at 0.270 s after its release. Express your answer in meters to three significant figures. h-41.0 m Previous Answers Correct PartB Compute the position of...
A plane flies with a constant speed of (65.0 + A) m/s relative to the air....
A plane flies with a constant speed of (65.0 + A) m/s relative to the air. The plane needs to get to an airport straight south of its current location. When the plane encounters a wind from the west with a wind speed of (24.0 + B) m/s, the pilot makes the necessary corrections to ensure the plane will get to the desired destination. With this correction, what is the new speed of the plane relative to the ground? Calculate...
A plane flies with a constant speed of (65.0 + A) m/s relative to the air....
A plane flies with a constant speed of (65.0 + A) m/s relative to the air. The plane needs to get to an airport straight south of its current location. When the plane encounters a wind from the west with a wind speed of (24.0 + B) m/s, the pilot makes the necessary corrections to ensure the plane will get to the desired destination. With this correction, what is the new speed of the plane relative to the ground? Calculate...
A plane flies with a constant speed of 120.0 m/s relative to the air. The plane...
A plane flies with a constant speed of 120.0 m/s relative to the air. The plane needs to get to an airport straight south of its current location. When the plane encounters a wind from the west with a wind speed of 29.0 m/s, the pilot makes the necessary corrections to ensure the plane will get to the desired destination. With this correction, what is the new speed of the plane relative to the ground? Calculate the answer in meters...
Learning Goal: To be able to calculate the velocity and the angle of trajectory of an...
Learning Goal: To be able to calculate the velocity and the angle of trajectory of an object undergoing projectile motion. (Figure 1)A batter hits a softball over a third baseman's head with speed Vy and at an angle from the horizontal. Immediately after the ball is hit, the third baseman tums and runs at a constant velocity v = 7.000 m/s, for a time t=2.000 s. He then catches the ball at the same height at which it left the...
Nitric oxide, NO, also known as nitrogen monoxide, is one of the primary contributors to air...
Nitric oxide, NO, also known as nitrogen monoxide, is one of the primary contributors to air pollution, acid rain, and the depletion of the ozone layer. The reaction of oxygen and nitrogen to form nitric oxide is N2(g) + O2(g) +2NO(9) The heat produced by an automobile engine is sufficient to convert some of the nitrogen and oxygen in the air to nitric oxide. The spontaneity of a reaction can be determined from the sign of, A-G • A reaction...
(17%) Problem 6: A 65-kg skydiver jumps out of an airplane and falls 490 m, reaching a maximum speed of 59 m/s before opening her parachute. Randomized Variables m= 65 kg h= 490 m v=59 m/s 50% Part (a) How much work, in joules, did air resistance do on the skydiver before she opened her parachute? Grade Summary Deductions 0% Potential 100% ( | E sin() cos() tan() cotan asin() acos atan) acotan sinh) cosh tanh cotanh Degrees O Radians...
For 7-9: A skydiver falls ot constant, terminal velocity in the presence of air resistance 7. (3 pts) The net work done on the skydiver is.. a) positive b) negative c) zero 8. (3 pts) The non-conservative work done on the skydiver is.. a) positive b) negative c) zero 9. (3 pts) The mechanical energy of the skydiver is. a) conserved c) decreasing b) increasing For each problem, show all work for full credit. Use at least three significant figures...
For a human body falling though air in a spread-eagle position, the numerical value of the constant D is about D = 0.250 kg/m Part A What value of D is required to make ut = 43.0 m/s the terminal velocity of a skydiver of mass 76.0 kg Express your answer using two significant figures. EVO AEO ? kg/m Submit Request Answer Part B If the sky diver's daughter, whose mass is 46.0 kg, is falling through the air and...
A hot-air balloonist, rising vertically with a constant speed of
5.00 m/s , releases a sandbag at the instant the balloon is 40.0 m
above the ground. (See (Figure 1)) After it is released, the
sandbag encounters no appreciable air drag.
**only need help with parts E-J
Part A Compute the position of the sandbag at 0.270 s after its release. Express your answer in meters to three significant figures. h-41.0 m Previous Answers Correct PartB Compute the position of...
Learning Goal: To be able to calculate the velocity and the angle of trajectory of an object undergoing projectile motion. (Figure 1)A batter hits a softball over a third baseman's head with speed Vy and at an angle from the horizontal. Immediately after the ball is hit, the third baseman tums and runs at a constant velocity v = 7.000 m/s, for a time t=2.000 s. He then catches the ball at the same height at which it left the...
Nitric oxide, NO, also known as nitrogen monoxide, is one of the primary contributors to air pollution, acid rain, and the depletion of the ozone layer. The reaction of oxygen and nitrogen to form nitric oxide is N2(g) + O2(g) +2NO(9) The heat produced by an automobile engine is sufficient to convert some of the nitrogen and oxygen in the air to nitric oxide. The spontaneity of a reaction can be determined from the sign of, A-G • A reaction...
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