subject
Physics, 29.01.2020 14:52 Jessietorres5024

What element has 81 protons in the nuclei of atoms

ansver
Answers: 2

Another question on Physics

question
Physics, 23.06.2019 00:20
The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 Ă— 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g
Answers: 2
question
Physics, 23.06.2019 02:00
The gravitational force between pluto and charon is 3.61 × 1018 n. pluto has a mass of 1.3 × 1022 kg, which is only slightly greater than charon’s mass of 1.6 × 1021 kg. how far apart are pluto and charon? 2.0 × 107 m 2.4 × 1012 m 3.8 × 1014 m 5.8 × 1024 m
Answers: 1
question
Physics, 23.06.2019 05:40
What is the change in internal energy if 20 j of heat is released from a system and the system does 50 j of work on the surroundings? a. -70 j b. 30 j c. -30 j d. 70 j
Answers: 2
question
Physics, 23.06.2019 11:10
How does an insulator stop the flow of an electric current? insulators convert electric energy to other forms of energy
Answers: 1
You know the right answer?
What element has 81 protons in the nuclei of atoms...
Questions
question
English, 17.03.2020 21:41
Questions on the website: 13722360