PHYSICS HIGH SCHOOL

What are the two factors affect the weight of an object?

Answers

Answer 1

Answer:

Answer:

mass and distance

Explanation:

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What is the volume of a rectangular object with L = 4.00 cm W = 2.00 cm H = 0.50 cm?

Answers

simply plug in these numbers into the Volume formula of a rectangle:
1) V=LWH
2)V=(4.00)(2.00)(0.50)
3)V=4cm^3

V=LWH
L=4
W=2
H=0.5
V=(4)(2)(0.5)
V=4cm^3

4 cubic centimeters

Which set of terms best defines what affects kinetic energy to potential energy, respectively?

Answers

Velocity and height are the terms that best describes what affects kinetic energy and potential energy.

By definition, the kinetic energy is given by:

Where,

m: body mass

v: body speed

On the other hand, the potential energy is:

Where,

m: body mass

g: acceleration of gravity

h: height of the object

Therefore, a set of terms that affects kinetic and potential energy are speed and height, respectively.

Answer:

The set of terms is speed and height, respectively.

The speed of propagation of the action potential (an electrical signal) in a nerve cell depends (inversely) on the diameter of the axon (nerve fiber). If the nerve cell connecting the spinal cord to your feet is 1.2 m long, and the nerve impulse speed is 27 m/s, how long (in s) does it take for the nerve signal to travel this distance?

Answers

Answer:

0.044 seconds

Explanation:

Parameters given:

Length of nerve cell = 1.2m

Nerve impulse speed = 27m/s

Speed is given as:

Speed = distance/time

Therefore, we can make time the subject of the formula. We have:

Time = distance/speed

Hence, time taken for the nerve cell to travel this distance is:

Time = 1.2 / 27

Time = 0.044 seconds

It takes 0.044 seconds for the nerve signal to travel the distance of the nerve connecting the spinal cord to the feet.

Which of the following accurately describes the differences between the SI and English systems of measurement? A. The two systems are used interchangeably in the scientific and technical communities.

B. The English system is more commonly used in Europe than in the United States.

C. The English system is preferred for use in the scientific and technical communities due to its ease of use over the SI system.

D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use.

Answers

The best answer is D. The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use. In order to standardize measurements, the International System of Units or the SI units are commonly used around the world since they are more easy to understand and compare than the English unit.

what determines how atoms combine to form molecules? A. the arrangement of electrons B. the arrangement of nucleons C. the number of protons D. all of the above E. none of the above

Answers

The correct answer for the question that is being presented above is this one: "D. all of the above." The following determines how atoms combine to form molecules: the arrangement of electrons; the arrangement of nucleons; the number of protons

A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement to zero is 0.13 s. What are the (a) period and (b) frequency? (c) The wavelength is 1.9 m; what is the wave speed?