Questions by Zichen Wang

Questions by Zichen Wang

A photon with energy ℏω=250 keV is scattered at an angle θ=120∘ by a stationary free electron. Find the energy of the scattered photon. a) 125125 keV b) 150150 keV c) 200200 keV d) 225225 keV

asked Dec 26, 2024

1 answer

0 votes

220k views

Factorise: A) x^2 + 11x - 26 B) x^2 -5x -24 C) 9x^2 + 6x - 8

asked Dec 21, 2024

2 answers

1 vote

58.0k views

Multiple pathy alopecic areas on scalp of 8yo kid + hair shafts are broken off near scalp surface, black dots +/- diffuse scaling similar to dandruff +/- posauricular, posterior cervical or occipital nodes

asked Dec 12, 2024

1 answer

1 vote

26.7k views

The wholesale price for a chair is $194. A certain furniture store marks up the wholesale price by 31%. a. Determine the retail price after the markup. b. If the chair is later discounted by 15%, calculate

asked Aug 19, 2024

1 answer

3 votes

12.6k views

In which of the following cities did Martin Luther King, Jr. organize demonstrations, knowing it would probably cause violence but hoping it would show Southern brutality to the world?

asked Mar 28, 2024

1 answer

4 votes

3.4k views

Emergency kits - who determines content of kits?

asked Mar 4, 2024

1 answer

3 votes

22.7k views

Use the order of operations to find the value of the expression. 42 − (8+3) + 2 = 42 − ___ + 2 = ___ − ___ + 2 = ___ + 2 = ___ Question content area bottom Part 1 Evaluate. 42 − (8+3) + 2 = 42 − enter

asked Mar 1, 2024

1 answer

3 votes

205k views

What the median of 11, 31, 17, 22, 18, 25, 25, 10, 15, 12, 30, 12, 29, 25, 21, 32, 30, 25

asked Jan 6, 2024

1 answer

3 votes

64.9k views

How did John Marshall’s time as Chief Justice of the Supreme Court impact the judicial branch of the United States government

asked Dec 16, 2023

1 answer

25 votes

2.0k views

What is the ability to respond quickly to what you see, hear, or feel? A. Speed B. Reaction Time C. Coordination D. Position Control

asked Dec 7, 2023

1 answer

24 votes

102k views

What is the area of figure

asked Oct 15, 2023

1 answer

0 votes

155k views

Evaluate and match each expression on the left to its value on the right, when and .

asked Aug 27, 2023

1 answer

4 votes

110k views

Can someone plz help me? :(

asked Mar 26, 2023

1 answer

11 votes

11.1k views

How are interest groups a way for citizens to be involved in government?

asked Feb 3, 2023

1 answer

1 vote

14.4k views

Please help me! [One Step Inequalities]

asked Dec 17, 2022

2 answers

1 vote

111k views

How does sediment move from one place to another? (Using go.ogle, explain in your words how sediment moves from one place to another and provide examples) help please....

asked Nov 26, 2022

1 answer

18 votes

22.9k views

What percentage of americans get no exercise in a day

asked Nov 25, 2022

2 answers

23 votes

16.3k views

PERIOD, FREQUENCY OR AMPLITUDE 1. Doesn't change period 2. More of this means more energy 3. Increases as a pendulum swings back and forth faster 4. Measured in cycles per second 5. Measured in meters

asked Oct 25, 2022

1 answer

3 votes

113k views

1. Sharmila recorded the number of pages she read every 5 minutes while reading a novel. Her data is shown in the table below.

asked Apr 23, 2022

1 answer

7 votes

231k views

Which equation represents the parabola with focus (8, 4) and vertex (8, 2)

asked Mar 15, 2022

1 answer

4 votes

103k views

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