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7 What is one diference between an electromagnetic wave and a mechanical wave? A. A mechanical wave can travel through a vacuum. An electromagnetic wave must have a medium to travel through. B. An electromagnetic wave can travel through a vacuum. A mechanical wave must have a medium to travel through. C. An electromagnetic wave moves parallel to the direction of the wave's travel. A mechanical wave can move only perpendicular to the direction of the wave's travel. D. An electromagnetic wave moves perpendicular to the direction of the wave's travel. A mechanical wave can move only parallel to the direction of the wave's travel. 8 A wave traveling at 300 mis has a wavelength of 6.7 meters. What is the frequency of this wave? A. 2010 Hz B. 0.02 mis C. 300 Hz D. 44.7 Hz 9 Kartianna is pushing a lawn mower using a force of 300 N. If she pushes the mower a distance of 800 m, how much work has she done? A. 1,100 J B. 24,000 J С. 110,000J D. 240,000 J

7 What is one diference between an electromagnetic wave and a mechanical wave? A. A mechanical wave can travel through a vacuum. An electromagnetic wave must have a medium to travel through. B. An electromagnetic wave can travel through a vacuum. A mechanical wave must have a medium to travel through. C. An electromagnetic wave moves parallel to the direction of the wave's travel. A mechanical wave can move only perpendicular to the direction of the wave's travel. D. An electromagnetic wave moves perpendicular to the direction of the wave's travel. A mechanical wave can move only parallel to the direction of the wave's travel. 8 A wave traveling at 300 mis has a wavelength of 6.7 meters. What is the frequency of this wave? A. 2010 Hz B. 0.02 mis C. 300 Hz D. 44.7 Hz 9 Kartianna is pushing a lawn mower using a force of 300 N. If she pushes the mower a distance of 800 m, how much work has she done? A. 1,100 J B. 24,000 J С. 110,000J D. 240,000 J

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
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2:07 l LTE 4 Physical Scien.. Directions: Answer the following question(s). 7 What is one difference between an electromagnetic wave and a mechanical wave? 10 A boy uses a simple pulley to pull a block up a ramp. The height of the ramp is 4 m and the length of the ramp is 10 m. A. A mechanical wave can travel through a vacuum. An electromagnetic wave must have a medium to travel through. B. An electromagnetic wave can travel through a vacuum. A mechanical wave must have a medium to travel through. C. An electromagnetic wave moves parallel to the direction of the wave's travel. A mechanical wave can move only perpendicular to the direction of the wave's travel. Assuming that the ramp is frictionless, what is the ideal mechanical advantage of the ramp and does the pulley provide any additional advantage? A. The ideal mechanical advantage of the ramp is 0.4, and the pulley makes it easier to pull the block up the ramp. B. The mechanical advantage of the ramp is 2.5. and the pulley does not provide any additional mechanical advantage. D. An electromagnetic wave moves perpendicular to the direction of the wave's travel. A mechanical wave can move only parallel to the direction of the wave's travel. 8 A wave traveling at 300 m/s has a wavelength of 6.7 meters. What is the frequency of this wave? A. 2010 Hz B. 0.02 m/s C. 300 Hz C. The mechanical advantage of the ramp is 10, and the pulley does not provide any additional mechanical advantage. D. The mechanical advantage of the ramp is 40, and the pulley does provide an additional mechanical advantage. D. 44.7 Hz 9 Kartianna is pushing a lawn mower using a force of 300 N. If she pushes the mower a distance of 800 m, how much work has she done? 11 Three spheres are dropped from a height of 10.0 meters in a vacuum. The data from the results is shown below. A. 1,100 J B. 24,000 J C. 110,000 J D. 240,000 J Object Mass (kg) Acceleration (mis) Force (N) 9.81 196 1 1.00 2 2.00 981 2 981 3 5.00 49.1 981 Which of the following relationships is true? A. For each additional kilogram of mass, the force of the sphere doubles. B. The force of the spheres decrease as the mass of the spheres increase. C. The acceleration of the spheres is constant, even when the mass and force change. D. The mass and force of the spheres will remain constant if their acceleration is constant. Directions: Answer the following question(s). 12 Student A and student B are pushing a box towards the right by applying force as shown. At the same time, student Y and student Z are pushing the box with the force shown, but in the opposite direction. Student A and student B state that the box will move in the direction of the foroe that they applied, while student Y and student Z state that the box will move in the direction that they applied the force Studenta SN 3N e Studet ON
Transcribed Image Text:2:07 l LTE 4 Physical Scien.. Directions: Answer the following question(s). 7 What is one difference between an electromagnetic wave and a mechanical wave? 10 A boy uses a simple pulley to pull a block up a ramp. The height of the ramp is 4 m and the length of the ramp is 10 m. A. A mechanical wave can travel through a vacuum. An electromagnetic wave must have a medium to travel through. B. An electromagnetic wave can travel through a vacuum. A mechanical wave must have a medium to travel through. C. An electromagnetic wave moves parallel to the direction of the wave's travel. A mechanical wave can move only perpendicular to the direction of the wave's travel. Assuming that the ramp is frictionless, what is the ideal mechanical advantage of the ramp and does the pulley provide any additional advantage? A. The ideal mechanical advantage of the ramp is 0.4, and the pulley makes it easier to pull the block up the ramp. B. The mechanical advantage of the ramp is 2.5. and the pulley does not provide any additional mechanical advantage. D. An electromagnetic wave moves perpendicular to the direction of the wave's travel. A mechanical wave can move only parallel to the direction of the wave's travel. 8 A wave traveling at 300 m/s has a wavelength of 6.7 meters. What is the frequency of this wave? A. 2010 Hz B. 0.02 m/s C. 300 Hz C. The mechanical advantage of the ramp is 10, and the pulley does not provide any additional mechanical advantage. D. The mechanical advantage of the ramp is 40, and the pulley does provide an additional mechanical advantage. D. 44.7 Hz 9 Kartianna is pushing a lawn mower using a force of 300 N. If she pushes the mower a distance of 800 m, how much work has she done? 11 Three spheres are dropped from a height of 10.0 meters in a vacuum. The data from the results is shown below. A. 1,100 J B. 24,000 J C. 110,000 J D. 240,000 J Object Mass (kg) Acceleration (mis) Force (N) 9.81 196 1 1.00 2 2.00 981 2 981 3 5.00 49.1 981 Which of the following relationships is true? A. For each additional kilogram of mass, the force of the sphere doubles. B. The force of the spheres decrease as the mass of the spheres increase. C. The acceleration of the spheres is constant, even when the mass and force change. D. The mass and force of the spheres will remain constant if their acceleration is constant. Directions: Answer the following question(s). 12 Student A and student B are pushing a box towards the right by applying force as shown. At the same time, student Y and student Z are pushing the box with the force shown, but in the opposite direction. Student A and student B state that the box will move in the direction of the foroe that they applied, while student Y and student Z state that the box will move in the direction that they applied the force Studenta SN 3N e Studet ON
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