PHYSICS HIGH SCHOOL

A fulcrum is? A. A support for an inclined plain. B. The place where a lever is supported. C. Measured in Newton-meters. D. Measured in joules.

Answers

Answer 1
Answer: a fulcrum is the point which a lever rests or is supported on which it pivots, so B. hope this helps!!

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While traveling north on an expressway, a car traveling 60 mph (miles per hour) slows down to 30 mph in 12 minutesdue to traffic conditions. Calculate the acceleration.
The force that moving, charged particles exert on one another is called
What makes an inductor/capacitor different from other passive circuit elements? a) Inductors store energy in a magnetic field, while capacitors store energy in an electric field. b) Inductors resist changes in current, while capacitors resist changes in voltage. c) Inductors are used in AC circuits, while capacitors are used in DC circuits. d) Inductors are always connected in series, while capacitors are always connected in parallel.

Explain why dogs pant during hot summer days using the concept of evaporation?

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Dogs pant because they can't sweet out their heat so they pant it out (and drink water) to cool themselves down.

Help!!! I don't know this answer.

Answers

Work  =  (force on the electron) times (distance the electron is moved).

Can you calculate the force on the electron ?

Sure !   It's pushing against a force of 180 Newtons per Coulomb,
and you know the charge on it.

Do you know the distance it's moved ?

Sure !  That's the 2.5 cm (=0.025 meter) between the plates.

Look at this:

     Work  =    (force)                        x   (distance) 

     =  (180 N/C) x (1.602 x 10⁻¹⁹ C)   x   (0.025 m)

  I get           7.209 x 10⁻¹⁹  N-m.  (joules)         Try it and see if you agree.

Which statement best describes perigee? A. The closest point in Earth's orbit of the Sun
B. The Sun's orbit that is closest to the Moon
C. The farthest point in the Moon's orbit to Earth
D. The closet point in the Moon's orbit to Earth

Answers


Whenever you see "-gee" in the description of a point in an orbit,
you know it's talking about an orbit of the Earth.  You see the same
piece of a word in "geology" and "geography".  "Geometry" began
as the study of measuring places on the Earth, so that you and your
neighbor could agree on where your field ends and his begins, and
if you wanted to buy part of his field from him, the two of you could
go outside, do some measurements, and agree on what area you're
paying him for.

"Perigee" and "apogee" are the points in the orbit of the Moon, or a
TV satellite, or the International Space Station, where the orbiting body
is nearest or farthest from the Earth.  "Perigee" is the lowest/nearest point. 
"Apogee" is the highest/farthest point.

If the description has "-helion" in it instead of "-gee", then it's talking about
an orbit around the sun, like points in the Earth's orbit.  The "-helion" comes
from the Greek word "Helios" for the Sun.
Earth is at perihelion during the first few days of January, and at aphelion
during the first few days of July.  (That's right ... nearest to the sun in January,
and farthest from the sun in July.)

Sheena wants to measure the volume of a ball that is 24 cm across how should she set up her equation?

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Assuming the ball to be completely spherical, its volume can be calculated using: Volume = 4/3 * pi * r^3 Because the measured parameter is the diameter of the ball, we may substitute: r = d/2 into the equation: Volume = 4/3 * pi * d^3 / 8 Using this equation, Sheena can compute the volume to be: V = 4/3 * pi * (24)^3 / 8 V = 7,238.2 cubic centimeters

Answer:

c

Explanation:

The current stellar "yardstick" is the ______

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The light year is the unit often used to describe distance in terms of astronomy
It the 'parsec', equal to about 3.26 light years.

To evaluate the observations you make, you must use ____. a. a hypothesis
c. measurements
b. critical thinking
d. models

Answers

Answer:

critical thinking

Explanation:

To evaluate the observations you make, you must use __critical thinking __.

Critical thinking is an way of thinking in which a person improves the quality of his thinking by skillfully analyzing, accessing and reconstructing it. It is self directed, self disciplined and self monitored  and self corrective thinking.  A well cultivated critical thinker raises vital questions, gathers and assesses relevant information, and thinks openmindedly.
It maybe both measurements and critical thinking 
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