Recent activity by Dirk Groeneveld

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asked Dec 22, 2023

1 answer 190k views

Calculate the wave speed (in m/s) for the following waves: a) A sound wave in steel with a frequency of 500 Hz and a wavelength of 3.0 meters. (2pts) b) a ripple on a pond with a frequency of 2 Hz and

answered Dec 6, 2023

2 answers 19.7k views

Science edpuzzle Which of the following are some examples of a chemical change? Select all the apply

answered Sep 12, 2023

1 answer 106k views

There are 10 oranges and 5 apples in a bowl .What is the ratio of the amount of apples to the total amount of fruit in the bowl ?provide the answer in decimal format and round to the tenth place

asked Jul 16, 2023

1 answer 90.9k views

In the given figure AB = AC, BAD = 50 and AD = AE. find the value of x

answered Jun 13, 2023

1 answer 10.4k views

I need help with making plural of thise sentences: 1.Una muchacha guapa- * know that that I am not using los/las and I need tu change muchacha to muchachas but| don't know if I had to add -s to guapa as

asked Apr 28, 2023

1 answer 111k views

A small tree was planted at a height of 17 feet. The tree has been planted for 12 months, and is now 66 feet tall. Which equation could be used to find x, the average number of feet the tree grew each

answered Apr 13, 2023

1 answer 66.6k views

On her math test. Heidi correctly answered 36 of the 40questions. What percent of the questions did Heidi correctanswer?

answered Mar 17, 2023

1 answer 178k views

Mrs. Valdez can type 438 words in 6 minutes. How many minutes does it take to type 512 words

asked Feb 13, 2023

1 answer 20.7k views

2 vertical buildings are 42 metres apart and the shorter building is 135m high. The angle of elevation from the top of the shorter building to the top of the taller building is 60 degrees. Find the height

asked Dec 17, 2022

1 answer 27.2k views

In the coordinate plane, plot AB¯¯¯¯¯¯¯¯ and CD¯¯¯¯¯¯¯¯ given by the points A(−4, 5), B(−4, 8), C(2, −3), D(2, 0)

answered Nov 28, 2022

1 answer 190k views

2. ANSWER= On one trip, the Skunk Train traveled at a constant speed of 20 mph. Passengers enjoyed the scenery for the 2 hours they were riding the train. How many miles was the trip? A. 40 mi B. 30 mi

asked Nov 11, 2022

1 answer 119k views

A star's emission line of 400 nm appears shifted to 404 nm in the spectrum. What can you conclude from this shift? A. The star is approaching you with the speed of 3000 km/s. B. The star is approaching

asked Oct 24, 2022

1 answer 144k views

si en un plano dos pueblo se encuentra separados por 5cm y en la realidad los separa 2km ¿cual es la escala de la pieza?

asked Oct 13, 2022

1 answer 166k views

Determine if they following is systems of equations? y = 3x + 2 y = 7x -10

asked Oct 9, 2022

1 answer 99.8k views

How did the Supreme Court define the role of the federal government in Marbury v. Madison (1803) and McCulloch v. Maryland (1819)? Identify at least two examples in two sentences.

answered Aug 27, 2022

1 answer 202k views

Emotional states are integrated by the __________, which generates an output that creates such respiratory variations as laughing and crying.

answered Aug 23, 2022

1 answer 187k views

What year did the United States officially obtain land with access to the Pacific Ocean? A. 1821 b. 1845 c. 1846 Selected:d. 1848

asked Aug 8, 2022

1 answer 137k views

A forensic scientist was conducting a genetic investigation and identified a satellite (STR sequence) on a chromosome and constructed the primer CTTGCAA. What is the corresponding template DNA sequence

asked Jul 16, 2022

1 answer 234k views

What were the goals of the colonists who came to New Spain?

asked Jun 22, 2022

1 answer 37.5k views

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