What will happen when the car hits
the hay bale? Select all that apply.

A. The car will do wo...

# What will happen when the car hits
the hay bale? Select all that apply.

A. The car will do work on the hay

The bales of hay are placed at the botto

bale and push the bale forward.

B. The car's kinetic energy will transfer to the hay bale.

C. The hay bale's potential energy will transfer to the car.

D. The hay bale will do work on the car and stop the car's motion.

Answers: 3

Physics, 22.06.2019 01:30

Use the frequency histogram to complete the following parts. Ã¢â‚¬â€¹(a) identify the class with theÃ¢â‚¬â€¹ greatest, and the class with theÃ¢â‚¬â€¹ least, relative frequency. Ã¢â‚¬â€¹(b) estimate the greatest and least relative frequencies. Ã¢â‚¬â€¹(c) describe any patterns with the data. female fibula lengths 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 39.5 0 0.05 0.1 0.15 0.2 0.25 length (in centimeters) relative frequency a histogram titled "female fibula lengths" has a horizontal axis labeled "length in centimeters" from 30.5 to 39.5 in increments of 1 and a vertical axis labeled "relative frequency" from 0 to 0.25 in increments of 0.05. the histogram contains vertical bars of width 1, where one vertical bar is centered over each of the horizontal axis tick marks. the approximate heights of the vertical bars are listed as follows, where the label is listed first and the approximate height is listed second: 30.5, 0.02; 31.5, 0.04; 32.5, 0.05; 33.5, 0.13; 34.5, 0.22; 35.5, 0.25; 36.5, 0.13; 37.5, 0.06; 38.5, 0.09; 39.5, 0.01. Ã¢â‚¬â€¹(a) the class with the greatest relative frequency is nothing to nothing centimeters. Ã¢â‚¬â€¹(type integers or decimals. do not round. use ascendingÃ¢â‚¬â€¹ order.)

Answers: 3

Physics, 22.06.2019 04:00

1. a student believes that colder water makes fish swim faster. he sets up an experiment using different temperatures of water and measures the speed of the fish. (chapter 1 â€“ page 9) a. what is the independent variable? b. what is the dependent variable? c. list two constants the student should have for this experiment. 2. convert 0.375 mg to grams. show your work with units in order to receive credit. (chapter 1 â€“ page 16) 3. a race car drives one lap around a race track that is 500 meters in length. (chapter 2 â€“ pages 45-46) a. what is the driverâ€™s displacement at the end of the lap? b. how is his displacement different from the distance traveled? 4. how far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s? show the appropriate equation from your textbook and show your work with units in order to receive credit. (chapter 2 â€“ pages 46-47) 5. two cars, both with a mass of 500 kg, are traveling down a road. the first car has a velocity of 65 m/s east and the second car has a velocity of 85 m/s west. (chapter 2 â€“ pages 54-55) a. calculate the momentum of both cars showing the appropriate equation from your textbook and your work with units in order to receive credit. b. which car has the larger momentum? explain how you know. 6. an airplane traveling at 60 m/s comes to a stop in 10 seconds. calculate the airplaneâ€™s acceleration. show the appropriate formula and show your work with units in order to receive credit. (chapter 2 â€“ pages 57-58) 7. an individual has a weight of 735 newtons. what is the individualâ€™s mass? show the appropriate equation from your book and show your work with the units in order to receive credit. (chapter 3 â€“ pages 78-79) 8. in terms of newtonâ€™s first law of motion, explain why it is important to wear a seatbelt while riding in a car. (chapter 3 â€“ page 86) 9. if you kick a tennis ball with 50 n of force and then kick a soccer ball with 50 n of force, explain the difference in their motion according to newtonâ€™s second law. (chapter 3 â€“ pages 81-82) 10. describe how the velocity and acceleration of a skydiver changes as she falls from the plane back to the ground. (chapter 3 â€“ pages 88-89) 11. a child is swinging on swing. describe what happens to both the kinetic energy and potential energy of the child as she swings up and down. (chapter 4 â€“ pages 123) 12. driving to work one morning, you get a flat tire. when using the car jack, you apply 120 n of force to the jack and the jack in turn applies 2000 n of force to lift the car up. what is the mechanical advantage of the jack? (chapter 4 â€“ page 111) 13. a temperature of a 50 kg block increases by 15Â°c when 337,500 j of thermal energy are added to the block. (chapter 5 â€“ pages 141-142) a. what is the specific heat of the object? show the appropriate equation from your book and show your work with units. b. what is the block made of? use the chart on page 141. c. is this block a good material for insulators or conductors? 14. explain why gases make better thermal insulators than solids or liquids. give one example from the textbook of a thermal insulator that can keep you warm on a cold day. (chapter 5 â€“ pages 147) 15. several days after a snowfall, the roofs of some homes on your street have almost no snow on them, while the roofs on other homes are still snow covered. assuming they have all received the same amount of sunlight, give one reason for this observation related to thermal energy and insulation. 16. if you purchased a string of lights, how could you determine if the lights were wired in series or parallel? (chapter 6 â€“ pages 185-186) 17. what happens to the current in a device if the resistance is decreased but the voltage stays the same? (chapter 6 â€“ pages 181-182) 18. you measure the voltage difference of a circuit to be 15 v and the resistance to be 675 Ï‰. what is the current in the circuit? show the appropriate equation from your book and show your work with units. (chapter 6 â€“ page 182) 19. explain why a magnet from your refrigerator could not be used to lift something as heavy as a car. (chapter 7 â€“ pages 202-203)

Answers: 3

Physics, 22.06.2019 06:30

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

Answers: 1

Computers and Technology, 21.02.2020 17:31

Mathematics, 21.02.2020 17:31