Questions by Yuwen Yan

Questions by Yuwen Yan

Why is Serengeti still covered with wild grass

asked May 12, 2020

2 answers

2 votes

65.2k views

A Thomson's gazelle can run at very high speeds, but its acceleration is relatively modest. A reasonable model for the sprint of a gazelle assumes an acceleration of 4.2 m/s2 for 6.5 s , after which the

asked Apr 16, 2020

1 answer

2 votes

154k views

Why do cells need to divide?

asked Sep 15, 2019

2 answers

5 votes

205k views

If an object is projected upward with an initial velocity of 125 125 ft per sec, its height h after t seconds is h equals negative 16 t squared plus 125 t h=−16t2+125t. Find the height of the object after

asked May 16, 2019

2 answers

4 votes

140k views

Interstitial fluid enters the lymphatic system is called lymph true or false

asked Apr 14, 2019

1 answer

5 votes

188k views

How does the swan’s condition in “The Wild Swans at Coole” by William Butler Yeats contrast with that of the speaker’s?

asked Mar 8, 2019

2 answers

0 votes

217k views

A radio telescope has a parabolic surface. If it is 1m deep and 16m wide how far is the focus from the vertex?

asked Jun 10, 2018

1 answer

4 votes

95.8k views

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