Physics, 07.01.2022 01:40 Imagine2013
Engineers are constructing safety features called crash attenuators on highways to help minimize the impact of car collisions based on Newton's second law and impulse. The equation for impulse is shown below. The diagram below shows a model of a crash attenuator. Image courtesy of NTSB The arrow points in the direction of a possible moving vehicle. Which statement best explains how the engineers want to design the crash attenuator for safety? A. They want to decrease Δt so that the impact force will decrease. B. They want to increase Δt so that the impact force will decrease. C. They want to decrease Δt so that Δv will decrease. D. They want to increase Δt so that Δv will decrease.
Answers: 3
Physics, 22.06.2019 10:00
Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
Answers: 1
Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
Answers: 1
Physics, 22.06.2019 18:30
4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.
Answers: 2
Physics, 23.06.2019 07:30
Neurons are components of the nervous system of the body that transmit signals as electrical impulses travel along their length. these impulses propagate when charge suddenly rushes into and then out of a part of the neutron called an axon. measurements have shown that, during the inflow part of this cycle approximately 5.6x10^11 na per meter, each with a charge of e enter the axon. how many coulombs of charge enter a 1.10 cm length of axon during this process
Answers: 2
Engineers are constructing safety features called crash attenuators on highways to help minimize the...
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