SA

Sophia Anderson

Northeastern University
STEM Student

Biography

Hi! I'm currently studying at Northeastern University, where I'm majoring in applied physics. I'm also pursuing minors in chemistry and mechanical engineering. I love all things STEM and love helping explain interesting topics to others who want to learn

Education

BA Applied Physics
Northeastern University

Educator Statistics

Numerade tutor for 4 years
21 Students Helped

Topics Covered

Mastering Motion: Achieving Efficiency Along a Straight Line
Mastering Newton's Laws: Tips for Applying Them Effectively

Sophia's Textbook Answer Videos

1

Sophia's Quick Ask Videos

07:14
Physics 101 Mechanics

Calculate the de Broglie wavelength for:
a.An electron with kinetic energy of 56 eV,
b. A proton with kinetic energy of 78 MeV,
c. A 120g projectile moving at a speed of 1250 m / s.

02:16
Physics 101 Mechanics

In 1965, Penzias and Wilson discovered the isotropic cosmic background radiation of the microwave and earned the Nobel Prize in 1978. The cosmic microwave background radiation is measured at 2.725 Kelvin throughout the entire sky. Convert this temperature into the Celsius scale as well as the Fahrenheit scale. Hint: Use the converting formula: °F = 1.8°C + 32. The relation between the Celsius scale and the Kelvin scale is K = °C + 273.15.

04:52
Physics 101 Mechanics

Heisenberg Uncertainty
The Planck constant is 6.626x10^-34 J s.
The position of an object is measured to an accuracy of (or with an uncertainty of) Δx = 0.0140 nm.
(a) What is the object's uncertainty in momentum, Δp? Write the result in terms of 10^-24 kg·m/s. Keep 3 decimal places.
×10^-24 kg·m/s
(b) The mass of the object is 3.50x10^-11 kg. Use the classical physics formula for momentum to calculate the uncertainty in the speed of the object, Δv. Write the result in terms of 10^-13 m/s. Keep 2 decimal places.
×10^-13 m/s.

01:41
Physics 101 Mechanics

Over the past few years, the number of students enrolled
at a certain university has been decreasing. Each year there is a
12% decrease in student enrollment. Currently, 14,286 students are
enrolled. If this trend continues, how many students will be
enrolled in 5 years?

08:43
Physics 101 Mechanics

6.A proton's rest mass is 1.67x10-27kg. Calculate its total
momentumwhen it is traveling with speed of 0.70 c. 7.Energy is
released during a nuclear reaction due to a conversion between mass
and energy. Mass is not conserved. The initial and final amountsare
different. If a total of 10 gramsof mass is "missing", how much
energy has been release

04:08
Chemistry 101

Og is the noble gas after Rn. To go from [Rn] to [Og], you must fill four subshells (s, p, d, and f) with a total of 32 electrons. Thus, the atomic numbers of sixth and seventh period elements of the same group differ by 32. To go from [Og] to the next noble gas, however, you would theoretically fill five subshells (s, p, d, f, and g).
How many electrons are needed to fill all five subshells?
number of electrons:
Element 109 in the periodic table is Mt. Determine the atomic number of the element just below Mt in the periodic table.
atomic number:

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