Recent activity by Ruifeng Ma

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A light that is typically used to light the large cyclorama all the way upstage is 1) ellipsoidal. 2) Fresnel. 3) a strip light or flood light. 4) a strobe light.

answered Nov 29, 2024

1 answer 43.5k views

What are the 6 general uses according to Zoning Bylaw?

asked Nov 24, 2024

1 answer 109k views

Tacitus expressed criticism of the social conditions of his time A) by describing the virtues of the Germanic tribes. B) by writing sarcastic poetry. C) through his speeches in the senate. D) through his

answered Sep 28, 2024

1 answer 90.5k views

One method utilized in south to maintain control over slave populations

answered Sep 22, 2024

1 answer 110k views

A force of magnitude 25.0 N acting at a 60.0° angle to the horizontal pulls a block 5.00 m along the floor. a) Find the work done on the box: W= Joules 2)Now consider if the box experiences a frictional

asked Sep 20, 2024

1 answer 19.8k views

The largest ammonite ever found measured 8½ feet in diameter. Write the width in feet as an improper fraction.

asked Sep 17, 2024

1 answer 133k views

What is historical evidence? A) Historical remnants and records. B) Artifacts and documents. C) Both A and B. D) None of the above.

answered Aug 23, 2024

1 answer 232k views

Find the inductor current for t > 0 for the circuit below... A) Electrical engineering B) Circuit analysis C) Transient response D) Time domain analysis

asked Aug 16, 2024

1 answer 48.5k views

Describe the impact Classical Greece has had on modern day society. Think government, architecture, and academics

asked Jun 18, 2024

1 answer 210k views

If the zoogleal mass in a trickling filter becomes excessively thick, what should be done to prevent it from turning anaerobic: flood it or maintain the current conditions?

asked May 9, 2024

1 answer 229k views

Find the domain HELP THIS IS DUE IN 30 MINS √-(6- x)

answered May 5, 2024

1 answer 59.5k views

For an aircraft flying in straight and level unaccelerated trimmed flight at m = 0.2 at sea level, find: a) The lift of the wing and the lift of the tail b) The drag of the wing and the drag of the tail

answered Mar 15, 2024

1 answer 36.8k views

What's the speed limit when driving near a school or where children are crossing the street?

answered Mar 8, 2024

1 answer 113k views

What is climate change

asked Jan 26, 2024

1 answer 213k views

What are the atmospheric changes that have occurred over the last 200000 years? 1) Increase in carbon dioxide levels 2) Decrease in carbon dioxide levels 3) Increase in methane levels 4) Decrease in methane

asked Jan 16, 2024

1 answer 26.7k views

Select the correct text in the passage. Read Emily Dickinson's "Twas Later When the Summer Went." Which two lines contain examples of alliteration? Twas later when the summer went Than when the cricket

answered Dec 17, 2023

2 answers 183k views

A) list the real number roots and it’s multiplicityB) domain and range C) degree : 4 D) equation (show work by solving for “a”)

asked Nov 23, 2023

1 answer 160k views

New York State Test Practice Unit 2 What does the phrase "hovering somewhere between a smile and a frown” in paragraph 3 reveal about Pops? Use two details from the story to support your response.

answered Nov 12, 2023

2 answers 2.1k views

The measures of the exterior angles of a quadrilateral are 2x°, 4x°, 8x°, and 10x°. Find the measure of the smallest exterior angle.

asked Oct 21, 2023

1 answer 36.4k views

Find the constant of proportionality k in the equation y=27x

asked Oct 11, 2023

1 answer 227k views

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