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A fan cart with the fan set to High rolled across a floor. The cart's speeds are shown below. If the fan were set to Medium instead, what could the cart's speed be at 5 seconds? A. 10.9 cm per secondB. 31.0 cm per secondC. 40.1 cm per secondD. 48.3 cm per secondCorrect Answer: A - 10.9 cm per second Explanation: The fan supplies a force to the cart. If a lower fan speed were used, less force would be applied. This would cause a slower change in the cart's speed. So, the cart would be rolling more slowly than 31.0 cm per second after 5 seconds. The only choice that is less than 31.0 cm per second is 10.9 cm per second.Force is needed A. for a moving object to keep moving at the same speed and directionB. for a moving object to change its speedC. for a motionless object to remain stillD. to prevent a moving object from turningCorrect Answer: B - for a moving object to change its speed Explanation: An object will change its speed only if a force acts on it. In the Gizmo, forces can speed the cart up (fan) or slow the cart down (friction). Answer choice A is incorrect because a moving object will keep moving at the same speed if there is no force acting on it (like the cart after the fan was turned off). Answer choice C is incorrect because no force is required for a motionless object to remain at rest. Answer choice D is not correct because a moving object will naturally move in a straight line if there is no force.Rebecca puts her backpack on a fan cart and turns the fan on. She then measures the speed each second afterward. At 10 seconds the cart has a speed of 20 cm per second. How fast will the cart be moving at 12 seconds? A. 18 cm per secondB. 20 cm per secondC. 22 cm per secnodD. 24 cm per secondCorrect Answer: D - 24 cm per second Explanation: The cart started at 0 cm per second. Ten seconds later it was moving 20 cm per second. Therefore, every second the cart is gaining 2 cm per second. So, after 11 seconds the speed will be 22 cm per second. After 12 seconds the speed will be 24 cm per second.A fan cart is moving forward on a frictionless surface. If you change the fan speed from High to Low, what will occur? A. The cart will stop moving.B. The cart will slow down.C. The cart will keep moving at the same speed.D. The cart will continue to speed up, but not as quickly as before.Correct Answer: D - The cart will continue to speed up, but not as quickly as before. Explanation: The cart will continue to speed up because there is still force acting on it. However, less force is acting on it now because the fan speed is lower.The speed-versus-time bar graph for a fan cart experiment is shown below. What could have happened? A. The track was frictionless, and the fan was changed from High to Low after 8 seconds.B. The track was frictionless, and the fan was changed from High to Off after 8 seconds.C. The track was wooden, and the fan was changed from High to Off after 8 seconds.D. The track was wooden, and the fan was changed from Off to Low after 8 seconds.Correct Answer: B - The track was frictionless, and the fan was changed from High to Off after 8 seconds. Explanation: The bar graph shows that the speed stayed the same after 8 seconds. This means there is no total force on the cart. This matches the situation in which the fan is off and the surface is frictionless.
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Just a heads up that you can access basically all of the Gizmos Answers on AcademicHub for free. Google "AcademicHub" and it should be the first result.
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You must do the exercises and answer the questions. We can help you with single questions, but doing all the work for you isn't going to help you learn the material.
There are not any answers provided via the internet for the Explore Learning Gizmo Assessment questions on photosynthesis lab. The teacher will need to be contacted for further assistance with this.
Gizmo For You was created in 2007.
The Explore Learning Gizmo Assessment on prairie ecosystems are not offered online because it is best to study the material and obtain the answers oneself. This provides a better understanding of the material and will be greatly useful in the future.
freshwater is 68.7% and total water is 1.9% on earth. i got this answer from explorelearning.com in the water cycle gizmo.