What do astronomers use to calculate the age of the universe? Select three options,
dark energ...
Physics, 18.03.2020 06:20 itscheesycheedar
What do astronomers use to calculate the age of the universe? Select three options,
dark energy
the age of rocks on Earth
the age of the oldest stars
patterns of background radiation
how fast distant galaxies are moving away from us
Answers: 2
Physics, 22.06.2019 07:00
How do you tell if someone actually cares about you? and just say they do?
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Physics, 22.06.2019 09:30
This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer
Answers: 2
Physics, 22.06.2019 18:00
Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c
Answers: 1
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