Recent activity by Piotr Kruczek

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In an experiment, a beam of electrons of energy E = 4eV is incident on a barrier of height V0 = 3 eV and width a = 1 nm (nm =nanometer). What fraction of the incident beam will be reflected by this potential

answered Dec 4, 2024

1 answer 141k views

Herman Company received proceeds of ₤188,500 on 10-year, 8% bonds issued on January 1, 2010. The bonds had a face value of ₤200,000, pay interest semi-annually on June 30 and December 31, and have a call

asked Aug 22, 2024

1 answer 57.2k views

Read and choose the correct option to complete the sentence. Tus padres rentaron Ouna llave O una casa de campo O un elevador un servicio de habitación para las vacaciones de familia de este año.

answered Jul 2, 2024

1 answer 119k views

What is the normal speed limit in a school zone when children are present?

answered Jun 28, 2024

1 answer 190k views

Historical Materialism: Process of Dialectical Materialism Outlined Dialectic: 1. discussion and reasoning by dialogue as a method of intellectual investigation; specifically : the Socratic techniques

asked Jun 21, 2024

1 answer 157k views

The density (mass per unit volume) of the planet Jupiter is ___________________________ (higher or lower) than that of the planet Mercury.

answered Jun 15, 2024

1 answer 33.9k views

Of 400 high school students whose mean height is 68.8 inches, 150 were girls. If the mean height of the girls was 61.0 inches, what is the mean height of the boys?

asked May 27, 2024

1 answer 161k views

Don't be Them-Be You! Article Which sentence from the selection expresses the author’s argument?

answered May 27, 2024

2 answers 211k views

Which of the following is correct? A) Most of the ATP are produced by substrate-level phosphorylation. B) Oxidation of FADH2 eventually yields four ATP via oxidative phosphorylation. C) Glycolysis relies

answered May 25, 2024

1 answer 3.2k views

A pre-shared key (PSK) of fewer than _____ characters may be subject to an attack if that key is a common dictionary word. A) 6 B) 8 C) 10 D) 12

answered Apr 20, 2024

1 answer 218k views

What is the ⌊-2.4⌋ Question 2 options: -2 0 -3 -4

answered Apr 10, 2024

1 answer 189k views

A bag contains 10 marbles, and 4 of the marbles are black. Joseph chooses 2 marbles at random without replacing the first marble. What is the probability that both marbles are black?

answered Feb 21, 2024

2 answers 180k views

What is the essential first step for a coach to help a client with hypertension reach his goals? 1) Assess the client's nutrition and physical-activity behaviors 2) Understand the client's work and home

asked Feb 17, 2024

1 answer 28.3k views

Find a point satisfying the conclusion of the mean value theorem for the function on the interval .

answered Feb 14, 2024

1 answer 97.8k views

Please help 20 points

answered Jan 24, 2024

1 answer 178k views

Which launch angle causes the ball to travel further horizontally before hitting the ground when Liang hits a tennis ball with the same total speed while making angles of 45∘ and 60∘ with the horizontal?

asked Jan 13, 2024

1 answer 15.0k views

A={ 0,1,3,5,6}; B={1,2,3,7} draw the venn diagram of AUB Writ

asked Nov 27, 2023

1 answer 198k views

find the circumference of a circle with radius 2 cm. Dont forget units in your answer. use π=3.14 in your answer

asked Nov 16, 2023

2 answers 232k views

Find X. (this is multiple choice the options are 3, 49, or 27

asked Nov 3, 2023

1 answer 180k views

How did the Bedouins develop military skills

asked Oct 21, 2023

1 answer 94.7k views

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