College Physics Questions and Answers

A is thicker at the center than the edges.
concave lens
convex lens
glass slab

If you deposit $3,750 in an account that pays 6% annual interest compounded monthly, what is the balance of the account after 11 years? I'm using $y=a(1+r{)}^t$, then i have $y=3,750(1+.06{)}^{132}$

1) The area of land from which all water in it drains into the same place is known as a(n)
A) interfluve.
B) watershed
C) drainage divide I
D) fluvial unit.
E) hydrologic unit
2) Overland flow can concentrate in small grooves called which can enlarge to form
A) striations; potholes
B) potholes, striations
C) rills, gullies
D) gullies; rills
E) striations gullies
3) With no clear geometry and no true stream valley, this drainage pattern occurs in areas such as glaciated shield regions,
A) deranged
B)radial
C) parallel
D) dendritic
E) trellis
4) The chemical composition of seawater
A) contains 18 elements which account for 75% of the dissolved solids in seawater
B) contains dissolved gases, suspended and dissolved organic matter, and many trace element
C) is exceptionally heterogeneous, varying across the vast oceans of the world
D) has varied greatly over the Earth's history.
E) is highest in salinity near large landmasses and at higher latitudes

What is $\mathrm{\theta <!--\; \theta \; -->}$?

$\frac{19}{2}$ as a mixed fraction is
A.$2\frac{3}{2}$
B.$9\frac{1}{2}$
C.$6\frac{3}{2}$
D. $5\frac{2}{3}$

Express 11/20 as a decimal.

A very long, straight wire has charge per unit length $3.80\times {10}^{-10}$ C/m . Find distance from the wire is the electricfield magnitude equal to 2.90 N/C

The technique used for data sent over the internet is...

The half-life of bromine-74 is 25 min. How much of a 4.0mg sample is still active after 75 min?

Why are sound waves called mechanical waves?

Liquids mix more slowly than gases. Why?

Lightning is an example of___.
static charging
charging by conduction
charging by induction
static discharge

Define angular velocity and derive v=rw

Which of the following metals is proven to be the poorest conductor of electricity?
Gold
Silver
Iron
Tungsten

The position of a particle as a function of time 𝑡, is given by $x(t)=at+b{t}^2-c{t}^3$, where a, b and c are constants. When the particle attains zero acceleration, then its velocity will be
a+b^2/c
a+b^2/4c
a+b^2/3c
a+b^2/2c

I need to know can a diamond conduct electricity

Convert $25$ degree Celsius into Fahrenheit.

Which of the following energy transformation takes place in a toaster?
A.Solar energy → Electrical energy
B.Electrical energy → Heat energy
C.Electrical energy → Light energy
D.Light energy → Heat energy

Find the value of $(16{)}^{\frac{3}{4}}$

Energy of an electron in the ground state of the hydrogen atom is $–2.18\times {10}^{–18}J$. Calculate the ionization enthalpy of atomic hydrogen in terms of J $mo{l}^{–1}$.