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Your Teach Setting a world record in a 100 m race, Maggie and Judy cross the...
The biggest stuffed animal in the world is a snake 420 m long, constructed by Norwegian...
The biggest stuffed animal in the world is a snake 420 m long, constructed by Norwegian children. Suppose the snake is laid out in a park as shown in the figure below, forming two straight sides of a 118° angle, with one side 160 m long. Olaf and Inge run a race they invent. Inge runs directly from the tail of the snake to its head, and Olaf starts from the same place at the same time but runs along...
A drag racer starts her car from rest and accelerates at 10.4 m/s for a distance...
A drag racer starts her car from rest and accelerates at 10.4 m/s for a distance of 395 m. (a) How long did it take the race car to travel this distance? 7.5 x Your response differs from the correct answer by more than 10%. Double check you (b) What is the speed of the race car at the end of the run? (No Response) m/s
A projectile is launched with an initial speed of 52.0 m/s at an angle of 32.0°...
A projectile is launched with an initial speed of 52.0 m/s at an angle of 32.0° above the horizontal. The projectile lands on a hillside 3.50 s later. Neglect air friction. (Assume that the +x-axis is to the right and the +y-axis is up along the page.) (a) What is the projectile's velocity at the highest point of its trajectory? 27.55 x magnitude Your response differs from the correct answer by more than 10%. Double check your calculations. m/s 44.09...
The initial velocity of a military jet is 185 m/s eastward. The pilot ignites the afterburners,...
The initial velocity of a military jet is 185 m/s eastward. The pilot ignites the afterburners, and the jet accelerates eastward at a constant rate for 2.05 s. The final velocity of the jet is 320 m/s eastward. What was the s displacement during the time it was accelerating? _____ Enter a number differs from the correct answer by more than 10%. Double check your calculations. m to the east
A small mailbag is released from a helicopter that is descending steadily at 1.19 m/s. (a)...
A small mailbag is released from a helicopter that is descending steadily at 1.19 m/s. (a) After 5.00 s, what is the speed of the mailbag? v = 50.19 m/s Correct: Your answer is correct. m/s (b) How far is it below the helicopter? d = ??? Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 10%. Double check your calculations. m (c) What are your answers to parts (a) and (b) if the...
My Notes O Ask Your A position-time graph for a particle moving along the x axis...
My Notes O Ask Your A position-time graph for a particle moving along the x axis is shown in the figure below. x (m) 12 10F レ (a) Find the average velocity in the time interval t 2.00 s tof 3.50 s. (Indicate the direction with the sign of your answer.) Your response differs from the correct answer by more than 10%. Double check your calculations. m/s (b) Determine the instantaneous velocity at t-2.00 s by measuring the slope of...
car sounds よ a orn the note A (440 Hz)The horn is sounded while the car...
car sounds よ a orn the note A (440 Hz)The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-fourth the car's speed hears a frequency of 420 Hz. (a) Is the cyclist ahead of or behind the car? ahead of the car behind the car (b) What is the speed of the car? (Assume the speed of sound in air is 343 m/s.) 16.7 Your response differs from the...
A weather balloon is designed to expand to a maximum radius of 19 m at its...
A weather balloon is designed to expand to a maximum radius of 19 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric pressure and 300 K, what is its radius at liftoff? Your response differs from the correct answer by more than 10%. Double check your calculations. m
A ball is thrown directly downward with an initial speed of 8.45 m/s, from a height...
A ball is thrown directly downward with an initial speed of 8.45 m/s, from a height of 29.1 m. After what time interval does it strike the ground? Your response differs from the correct answer by more than 10%. Double check your calculations. S
A satellite moves in a circular orbit around Earth at a speed of 5227 m/s. (a)...
A satellite moves in a circular orbit around Earth at a speed of 5227 m/s. (a) Determine the satellite's altitude above the surface of Earth. Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 10%. Double check your calculations. m (b) Determine the period of the satellite's orbit.
The biggest stuffed animal in the world is a snake 420 m long, constructed by Norwegian children. Suppose the snake is laid out in a park as shown in the figure below, forming two straight sides of a 118° angle, with one side 160 m long. Olaf and Inge run a race they invent. Inge runs directly from the tail of the snake to its head, and Olaf starts from the same place at the same time but runs along...
A drag racer starts her car from rest and accelerates at 10.4 m/s for a distance of 395 m. (a) How long did it take the race car to travel this distance? 7.5 x Your response differs from the correct answer by more than 10%. Double check you (b) What is the speed of the race car at the end of the run? (No Response) m/s
A projectile is launched with an initial speed of 52.0 m/s at an angle of 32.0° above the horizontal. The projectile lands on a hillside 3.50 s later. Neglect air friction. (Assume that the +x-axis is to the right and the +y-axis is up along the page.) (a) What is the projectile's velocity at the highest point of its trajectory? 27.55 x magnitude Your response differs from the correct answer by more than 10%. Double check your calculations. m/s 44.09...
The initial velocity of a military jet is 185 m/s eastward. The pilot ignites the afterburners, and the jet accelerates eastward at a constant rate for 2.05 s. The final velocity of the jet is 320 m/s eastward. What was the s displacement during the time it was accelerating? _____ Enter a number differs from the correct answer by more than 10%. Double check your calculations. m to the east
My Notes O Ask Your A position-time graph for a particle moving along the x axis is shown in the figure below. x (m) 12 10F レ (a) Find the average velocity in the time interval t 2.00 s tof 3.50 s. (Indicate the direction with the sign of your answer.) Your response differs from the correct answer by more than 10%. Double check your calculations. m/s (b) Determine the instantaneous velocity at t-2.00 s by measuring the slope of...
car sounds よ a orn the note A (440 Hz)The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-fourth the car's speed hears a frequency of 420 Hz. (a) Is the cyclist ahead of or behind the car? ahead of the car behind the car (b) What is the speed of the car? (Assume the speed of sound in air is 343 m/s.) 16.7 Your response differs from the...
A weather balloon is designed to expand to a maximum radius of 19 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric pressure and 300 K, what is its radius at liftoff? Your response differs from the correct answer by more than 10%. Double check your calculations. m
A ball is thrown directly downward with an initial speed of 8.45 m/s, from a height of 29.1 m. After what time interval does it strike the ground? Your response differs from the correct answer by more than 10%. Double check your calculations. S
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