Answer:
Let β = v / c
proper time Δt' is measured in a frame at the same place in a given frame - the proper time is measured in spaceship II moving at .28 c
a) spaceship I is moving at (.6 - .28) c = .32 c relative to proper time
Δt = Δt' / (1 - β^2)^1/2 as measured by students in ship I
Δt = 50 / (1 - .32^2)^1/2 = 52.8 m measured by students
b) Δt = 50 / (1 - .28^2)^1/2 = 52.1 min time elapsed for observer on earth
A 9 newtwon charge is Felt on a (1x10^-4) C charge from another charge that is 3 meters away. What is the magnitude of that other charge
The magnitude of that other charge will be 9×10⁻⁵ C. The force on the charge is inverse of the distance.
What is Columb's law?The force of attraction between two charges, according to Coulomb's law, is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
The magnitude of that other charge is found as;
[tex]\rm F = \frac{Kq_1q_2}{r^2} \\\\ \rm 9 = \frac{9 \times 10^9 \times 1\times 10^{-4}\times q_2}{(3)^2} \\\\ q_2=9\times 10^{-5} \ C[/tex]
Hence, the magnitude of that other charge will be 9×10⁻⁵ C.
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Question 19 of 20
Which force causes the protons in an atom to be attracted to one another?
OA. Strong nuclear
OB. Magnetic
OC. Weak nuclear
OD. Electric
The force that causes the protons in an atom to be attracted to one another is Strong nuclear.
What is nuclear force?Nuclear force is a force that acts between the protons and neutrons of atoms.
Neutrons and protons, both nucleons, are affected by the nuclear force almost identically and it is responsible for the attraction of protons in an atoms.
Thus, the force that causes the protons in an atom to be attracted to one another is Strong nuclear.
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State that there are positive and negative charges.
Yes there are
Explanation:
Both kind of charges exist. (e≈1.60 x 10^-19 C)
Charge is the intrinsic property of a body, that allows it to have either of two kinds of itself.
Positive elementary charge is
[tex]{x}^{1 +} [/tex]
And negative is
[tex] {x}^{1 -} [/tex]
There are two types of electric charges in nature, they are positive and negative charges.
What is meant by charge ?
Charge is defined as the intrinsic property of matter, by which it experiences a force, when placed in an electromagnetic field.
Here,
In nature, there are two type of electric charges. They are positive charge and negative charge.
The two charges exists in the nature, because, the positive charge attracts the negative charge.
The earth is actually neutral in nature. If a positive charged body is connected to the earth, the positive charge will be drained to the ground. This can be clearly described that, when the surface of earth becomes positively charged, there occurs a potential difference between the surface and the ground.
As a result, the electrons flows from the ground to the surface. The negative charge and positive charges cancels each other and thus neutralizing the surface.
The same happens when a negative charged body is connected to the surface of earth, the charge will be neutralized by the positive charge.
Hence,
There are two types of electric charges in nature, they are positive and negative charges.
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The theoretical capacity of a process is the reciprocal of the theoretical flow time of the process. Do you agree? Explain.
I do not agree with the statement 'theoretical capacity of a process is the reciprocal of the theoretical flow time of the process' because time is only one variable.
What is theoretical capacity?The theoretical capacity of a process can be defined as the ability to perform a given work in a given period of time.
The theoretical capacity of a process is not only dependent on the time that takes to carry out but also on other variables (e.g., temperature, light conditions, etc).
In conclusion, I do not agree with the statement 'theoretical capacity of a process is the reciprocal of the theoretical flow time of the process' because time is only one variable.
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A mountain climber starts at the base of a mountain, climbs all the way to the peak, and then climbs back down to the base of the mountain. At which point is the climber's gravitational potential energy the greatest?
A ball falls down from the top of a height of 70m.
How much time the ball will take to reach the ground?
Apply second equation of kinematics
h=1/2gt²gt²=2h9.8t²=2(70)t²=140/9.8t²=14.3t=3.78salso known as the dog star, what is special about sirius?
what you know about the laws of motion?
please help
Take the mechanical equivalent of heat as 4 J/cal. A 10-g bullet moving at 2000 m/s plunges
into 1 kg of paraffin wax (specific heat 0.7 cal/g ·C◦). The wax was initially at 20◦ C. Assuming
that all the bullet’s energy heats the wax, its final temperature (in ◦ C) is:
A. 20.14
B. 23.5
C. 20.006
D. 27.1
E. 30.23
Assuming that all the bullet’s energy heats the paraffin, its final temperature is 27.1 degree C. The correct option is D.
What is temperature?Temperature is the degree of hotness and coldness of the material.
The energy of the bullet E = 1/2 mv²
E = 1/2 x 10 x 10⁻³ x (2000)²
E = 2 x 10⁴ J
This heat is used in heating the paraffin
E = m x c ΔT = m x c (Tfinal -Tinitial)
2 x 10⁴ J = 1 x 2.8 x 10³ x (Tfinal -20)
Tfinal = 27.1°C
Thus, the final temperature is 27.1 degree C. The correct option is D.
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Read this article discussing the amount of time that people of various ages and education levels report spending on different technologies. Ask at least 12 of your adult friends and family members the same survey question. (The more people you ask, the better.) How do your survey results compare with the results in the article? What are some possible reasons your results might be different? When comparing the results, be sure to take into account the margin of error for the survey discussed in the article
The article is not found here but surveys are important because they are representative samples of a population.
What is a survey?A survey is a useful tool based on population samples, which is used to make statistical analyses in a given investigation.
Differences in surveys are generally due to small sample sizes, which may lead to errors in the analysis of data.
In conclusion, the article is not found here but surveys are important because they are representative samples of a population.
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A circular loop is initially placed in a uniform magnetic field perpendicular to the field lines and then removed quickly from the field. The induced emf causes the electric charge flow in the loop . Explain the force on the induced current due to the original field
The induced emf is found as -0.0531 V. When the flux coupling with a conductor or coil changes, electromotive Force, or EMF, is said to be induced.
What is induced emf?Emf is the production of a potential difference in a coil as a result of changes in the magnetic flux passing through it.
From Lenz law,the the induced EMF is found as;
[tex]\rm e=- \frac{\triangle \phi _B}{\triangle t } \\\\\rm e=- \frac{A\triangle B}{\triangle t } \\\\ e= -\frac{\pi r^2(0-1.10)}{0.15} \\\\ e=-0.0531 \ V[/tex]
Hence,the induced emf is found as -0.0531 V.
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A 1.1-m tall child is standing 6.0 m from a spherical convex mirror. The child’s image is 0.40 m behind the mirror. What is the image height and focal length of the mirror?
Answer:
1 / i + 1 / o = 1 / f thin lens equation
(i + o) / o i = 1 / f
f = o i / (i + o) = 6 * -.4 / (-.4 + 6) = -2.4 / 5.6 = -.42 m
The focal length is -.42 m indicating a convex mirror
M = -I / O = -.4 / 6 = -.067 negative magnification indicates erect image
O = M * 1.1 = -.067 * 1.1 = -.073 m height of image
One must be careful with signs because they can vary with textbooks
Voyager 1 and 2 sent back detailed information about all of the following except:
a.
the characteristics of all outer planets in our solar system
b.
the nature of our cosmic neighborhood at the edge of our galaxy
c.
details about saturn and jupiter
d.
components that make up our asteroid belt between mars and jupiter
Answer:
D
Explanation:
Components that make up our asteroid belt between mars and jupiter
A man makes a ruler with graduation in cm i.e 100 divisions in 1m on it. To what accuracy can this ruler measure? how can this accuracy be increased?
Let's find the shortest distance possible
To calculate we need the length per division divide total length by divisions
1/100m0.001m0.1cm1mmTill 1 mm it can measure
To increase accuracy increase no of divisons
9. An empty, massless cubo is monsured to have all sides equal to 11 cm. It is Ponting in water and will slowly be filled with sand
that has a density of 3.5 g/cm! What volume of sand will cause the box to sink?
Answer:
please refer to the attachment.
Most of the known stars in the Universe are?
Air masses that form over continents in ource regions that are cold are called __
Answers:
Continental polar Cp
Maritime Polar Mp
Continental tropical ct
Maritime tropical mp
Answer:
Continental polar Cp
Explanation:
The new memory-driven computer being developed by NASA and Hewlett Packard Enterprises is lightweight, hundreds of times faster than today’s most advanced computers, and is designed to hold one of the most advanced artificial intelligences.
True or False
The statement is true.
What is NASA do?
NASA stands for National Aeronautics and Space Administration. NASA is a U.S. government agency that is responsible for science and technology related to air and space. The Space Age started in 1957 with the launch of the Soviet satellite Sputnik. NASA opened for business on Oct.
What does NASA use AI for?NASA is constantly progressing in AI applications for space research, such as automated image analysis for the galaxy, planet, and star classification, developing autonomous space probes that can avoid space junk without human involvement, by using AI-based radio technology to make communication networks more.
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HELP ME NOW PLEASE !!!
A stone of 4.5 kg mass is falling from the top of a 60 m high multi storey building.Find the kinetic energy of the stone when it reaches the ground.
The kinetic energy will be equal to the potential energy at top
PE=mghm is mass
h is height
PE=4.5(60)(9.8)PE=2646JWhich of the following is Newton's Second Law of Motion?”
“A moving object will continue to move at the same velocity until there is a change in
direction or an external force is applied to it."
"When a force acts on an object, the rate of change of momentum experienced by the
O object is proportional to the size of the force and takes place in the direction in which the
force acts.
"For every force that is exerted by one body on another, there is an equal and opposite
force exerted by the second body on the first."
"A body continues in a state of rest or of uniform velocity unless acted on by an external
force.
Which electromagnetic has the shortest wavelength?.
Answer:
Gamma rays
Explanation:
A 1150 kg car is on a 8.70° hill.
Using X-Y axes tilted down the
plane, what is the y-component
of the weight?
Answer:
-11151.69N
Explanation:
Wy= -mgcos21=-1150*9.81*cos8.7=-11151.69N (negative because weight points downwards)
y- component = -11151.69N
Wy= -mgcos21=-1150*9.81*cos8.7=-11151.69N
(negative because weight points downwards)
What is the component of the weight parallel to the inclined plane?This item will finally boost up down the inclined plane due to the presence of an unbalanced pressure. it's far the parallel element of the pressure of gravity that reasons this acceleration. The parallel aspect of the force of gravity is the net force.
The y-issue of Vector B is contrary to the 40o perspective. while finding additives through drawing a right triangle across the given attitude, you want to put within the symptoms explicitly. In this case, the y-thing points up and so is wonderful.
For the maximum element, we will maintain weigh and weight immediately with the aid of the use of weighing as a verb and weight as a noun, with a smattering of exceptions for records and grades and blankets. Our advice: take consolation wherein you may. Because of this, an item's mass may be measured indirectly through its weight, and so, for regular purposes, weighing (the usage of a weighing scale) is a completely suited manner of measuring mass. Further, stability measures mass in a roundabout way by way of comparing the load of the measured item to that of an item(s) of recognized mass.
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What is the wavelength a wave if it has a frequency of 7,143 Hz and a velocity of 1,151 m/s?
Wavelength = 0.16m to 2.dp
Wavelength = wave speed / frequency
= 1,151 ÷ 7,143
= 0.1611367773
Hope this helps!
A 480 g falcon reaches a speed of 75 m/s in a vertical dive. if we assume that the falcon speeds up under the influence of gravity only, what is the minimum height of the dive needed (ignore air friction) in meters.
Answer:
286.7 m
Explanation:
So we are assuming the PE of the falcon is converted to KE
KE = PE
1/2 (.480)(75)^2 = .480 (9.81)(h ) solve for h = 286.7 m
The symbol most often used to describe density is?
Answer:
he density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ
Explanation:
How long will it take a runner, starting from rest and accelerating uniformly at 1.5 m/s2, to travel 3.0 m
which direction should a ceiling fan turn in the summer
Look at the diagram below. What will the reading on voltmeter 1 be?
Enter your answer as a number
1.5v 1.5v
HE
(A2
A3
10 Ω
V2
V
10 Ω
V1
A1 0.15A
Answer:
1.5v
Explanation:
This is a series circuit with identical components, so the potential difference will be shared equally between each component. (1.5V + 1.5V) / 2 = 1.5V
According to the diagram, voltmeter 1 will show 1.5 V. Because it is a series combination voltmeter 2 will also show 1.5 V.
What is a Voltmeter?The potential difference, or voltage, between two points in an electrical or electronic circuit is measured using a voltmeter, also referred to as a voltage meter. While some voltmeters are made for use in alternating current (AC) circuits, others are meant to be used in direct current (DC) courses. Voltage for radio frequency (RF) can be measured using specialized voltmeters.
A simple analog voltmeter is a high resistance connected in series with a sensitive galvanometer (current meter). A voltmeter needs to have high internal resistance. Otherwise, it will consume a sizable amount of current, interfering with the test circuit's performance. The range of voltages that the meter can display depends on the series resistance value and the sensitivity of the galvanometer.
Since all of the components in this series circuit are the same, any potential difference will be distributed equally i.e., (1.5V + 1.5V) / 2 = 1.5V
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Static electricity is a ____ charge.
missing
temporary
flowing
permanent
Answer:
static electricity is a flowing charges
What is the difference between
longitudinal waves that have
different amplitudes?
Answer:
Wave amplitude of a transverse wave is the difference of height between a crest and the resting position. Wave amplitude of a longitudinal wave is the distance between particles of the medium where it is currently compressed by the wave.
Answer:
A wave caused by a disturbance with more energy has greater amplitude
Explanation:
