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gulaghasi [49]
3 years ago
13

What challenges arise when trying to protect the environment? Check all that apply.

Physics
2 answers:
SSSSS [86.1K]3 years ago
7 0

The correct answer to this is A,B,C, and D I know it seems weird but I just took the test and got them correct!

A.expensive clean energy startup costs

B.threat to the livelihood of many citizens

C.negative effect on future crop yields

D.expensive to monitor fishing and tourism industries

fenix001 [56]3 years ago
4 0

Answer

The challenge when trying to protect the environment is expensive clean energy startup cost

Explanation

In attempts to protect the environment, energy users across the globe are shifting to new renewable energy resources which are faced by the challenge of high capital cost. Renewable energy technologies are cheap to operate but very expensive to build. The perception is that renewable energy resources are risky because they require higher construction costs.


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On a horizontal, linear track lies a cart that has a fan attached to it. The mass of the cart plus fan is 364 g. The cart is pos
mamaluj [8]

Answer:

6.62s

Explanation:

Metric unit conversion:

364 g = 0.364 kg

789 g = 0.789 kg

Starting from rest, the cart takes 4.49 s to travel a distance of 1.43 m. We can use the following equation of motion to calculate the constant acceleration

s = a_1t_1^2/2

a_1 = \frac{2s}{t_1^2} = \frac{2*1.43}{4.49^2} = 0.142 m/s^2

Using Newton's 2nd law, we can calculate the force generated by the fan to push the 0.364 kg cart forward

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Now that more mass is added, the new acceleration of the 0.789 kg cart is

a_2 = F/m_2 = 0.052 / 0.789 = 0.065 m/s^2

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s = a_2t_2^2/2

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