Answers
Answer:
6.378 * 10^6 m
Explanation:
Radius = 6378 km
Changing in metres
6378 km = 6378000 m
Now in scientific notation
= 6.378 * 10 ^ 6 m
Related Questions
help help help help help help help help help
Answers
To attain the maximum range a projectile has to be launched at 45 degrees if the landing spot and the launch spot are at the same height (neglecting air resistance effects.) Explain in a few sentences how the relation between the vertical and the horizontal components of the initial velocity affects the projectile range
Answers
Answer:
see that the velocities are the components in a Cartesian system
Explanation:
The horizontal velocity of the projectile is the x-axis component of the initial velocity
v₀ₓ = v₀ cos 45
vertical speed is
[tex]v_{oy}[/tex] = v₀ sin 45
therefore we see that the velocities are the components in a Cartesian system
A 2.70 kg book rests on an incline of 13.0. You give it a sharp push up the frictionless ramp. It comes to a stop in 25.25 at 17.5 m up the ramp before starting its descent(a) What is the magnitude of the normal force on the book
Answers
Answer:
the magnitude of the normal force on the book is 25.78N
Explanation:
The computation of the magnitude of the normal force on the book is shown below
Normal force = N is
= mgcosβ
= 2.70 × 9.8 × cos13°
= 25.78N
hence, the magnitude of the normal force on the book is 25.78N
The above formula should be applied
A capacitor and an electric source are both connected to a light bulb. If the power source is momentarily disconnected from the circuit, what will happen to the light bulb?
Group of answer choices
It will get brighter because the capacitor is providing more power than the electrical source.
It will no light because the electric source is the only thing required to power the bulb.
It will stay momentarily lit because the capacitor is supplying a voltage.
It will flash on and off because of the unstable power.
Answers
Answer:
It will no light because the electric source is the only thing required to power the bulb.
Explanation:
Compare and contrast the SI and the English systems of measurement.
Answers
Answer:
The international system of units otherwisely known as SI is widely used and accepted all over the globe while English system of measurement is only used by the British this limits their usage as it is applied in few part of the world which is Britain.
Both units are form of measurement being used for evaluating measurement
Explanation:
Answer:Both systems are used to numerically describe measurement. The SI system is based on the number 10 as well as multiples and products of 10. This makes it much easier to use, and so it has been the accepted system in scientific and technical applications
Explanation:The English system is more complicated as relationships between units of the same quantity aren’t uniform.
Has anyone has the answers for Physical Education # 12 cross word and the word search?
Answers
Answer:
No
Explanation:
the answers, they seemed to be blocked on go.ogle
What happens to the electrons when you rub a balloon in your hair
Answers
Answer:
When you rub a balloon on your head, electrons move from the atoms and molecules in your hair onto the balloon. Electrons have a negative charge, so the balloon becomes negatively charged, and your hair is left with a positive charge.
Explanation:
How much time will it take for a bug to travel 2 meters across the floor if it is traveling at 0.5 m/s?
Answers
Explain what happens with the 0.25 days each year
Answers
Answer:
leap year
Explanation:
The bus is heading southwest at 56 miles per hour is it veloctiy or speed
Answers
Answer:
Its velocity
Explanation:
Velocity is speed with a direction.
Speed is the rate at which someone or something is able to move or operate.
In the question its telling us that the bus is going 56 miles per hour but it aslo gives us a direction, in this case is southwest.
if a given wave has a frequency of 7.7 Hz, find how long it takes for one of these waves to pass a given point. (find the period)
Answers
Answer:
Period = 0.1 seconds
Explanation:
Given the following data;
Frequency = 7.7 Hz
To find the period;
[tex] Period = \frac {1}{Frequency}[/tex]
[tex] Period = \frac {1}{7.7}[/tex]
Period = 0.1 seconds
Therefore, it would take one of these waves 0.1 seconds to pass a given point.
Which of the following objects most likely has a constant speed?
A car that speeds up when the light turns green
A car traveling at 65 mph on the freeway
A car that slows down to a stop due to a red light
A car that makes a u-turn
Answers
7. An electric kettle is connected to a mains voltage of 230 V. The current in the kettle is 12 A. Calculate the power of the kettle
Answers
Answer:
2,760watts
Explanation:
Power of the kettle = current * voltage
P = IV
Given
I = 12A
V = 230V
Substitute into the formula
Power of the kettle = 12*230
Power of the kettle = 2,760watts
Problem 3 (a) Assuming the human body (skin temperature 34◦C) to behave like an ideal thermal radiator, find the wavelength where the intensity from the body is a maximum. In what region of the electromagnetic spectrum is radiation with this wavelength? (b) Making whatever (reasonable) assumptions you may need, estimate the power radiated by a typical person isolated from the surroundings. (c) Estimate the radiation power absorbed by a person in a room in which the temperature is 20◦C.
Answers
Answer:
Explanation:
a )
We shall apply Wein's displacement law
λm x T = b where λm is wavelength of radiation having maximum intensity
T is absolute temperature of body , and b is a constant
b = 2898 μm-K
T = 273 + 34 = 307 K
λm x 307 = 2898
λm = 9.44 μm
= 9440 nm
It is infrared radiation .
b )
We shall apply Stefan's law of radiation.
E = σA T⁴
E is emitted radiation by body acting as black body , A is surface area , T is absolute temperature of body
σ = 5.67 x 10⁻⁸ J / m²T⁴
Surface area of a typical man's body A = 1.9 m²
T = 273 + 34 = 307 K
Assuming human body as black body
E = 5.67 x 10⁻⁸ x 1.9 x 307⁴ J/s
= 9.57 x 10² J/s
= 957 W .
c )
Radiation absorbed
E = 5.67 x 10⁻⁸ x 1.9 x ( 273 + 20 )⁴ J/s
= 794 W .
1. What is the equivalent resistance in this circuit?
2. What is the current in this circuit?
Answers
1. The equivalent resistance in a series circuit, like the one shown, is given by the general equation
[tex]R_{S} = R_1 + R_2 + R_3 + . . . + R_{N-1} + R_N = \sum_{i=1}^N R_i[/tex]
where N is the number of resistors in series. Here, there are four resistors in series. Using our equation with N = 4, we obtain
[tex]R_{S} &= R_1 + R_2 + R_3 + R_4 \\ R_{S} = 2.0 \, \Omega + 3.0 \, \Omega + 4.0 \, \Omega + 6.0 \, \Omega \\ R_{S} = 15.0 \, \Omega.[/tex]
2. The current in this series circuit is equal to the voltage divided by the equivalent resistance (a relationship you can derive from Ohm's law):
[tex]I = \frac{V}{R_{S}} = \frac{45 \, V}{15.0 \, \Omega} = 3.0 \, A. \nonumber[/tex]
A car traveled a distance of 467.5 km in 5.5 hours . What was its speed in (a) km/h and (b) m/sec ?
Answers
Answer:
(a) 85 km/h
(b) 425/18
Explanation:
Use v= d/t
convert km to m
and convert h to s
Explanation:
A car traveled a distance of 467.5 km in 5.5 hours . What was its speed in (a) km/h and (b) m/sec ?
Need help guys please
Answers
Answer:
c is the answer,................
1. Calculate the electric field due to a single +1nC point charge at a distance of lm, 2m, and 3m
Answers
Answer:
Approximately [tex]9.0\; \rm N \cdot C^{-1}[/tex] at [tex]1\; \rm m[/tex] from this charge, pointing away from the point charge.Approximately [tex]2.2\; \rm N \cdot C^{-1}[/tex] at [tex]\rm 2\; \rm m[/tex] from this charge, pointing away from the point charge.Approximately [tex]1.0\; \rm N \cdot C^{-1}[/tex] at [tex]3\; \rm m[/tex] from this charge, pointing away from the point charge.Assumption: there is no object between this point charge and the observer.
Explanation:
The electric field of a point charge is inversely proportional to the square of the distance from that point charge.
Let [tex]k[/tex] denote Coulomb's constant ([tex]k \approx 8.98755 \times 10^{-9}\; \rm N \cdot m^{2} \cdot C^{-1}[/tex].) Let the magnitude of that point charge be [tex]q[/tex]. At a distance of [tex]r[/tex] from this charge, the electric field due to this charge would be:
[tex]\displaystyle E = \frac{k \cdot q}{r^{2}}[/tex].
Convert the magnitude of the point charge in this question to standard units:
[tex]q = 1\; \rm nC = 10^{-9}\; \rm C[/tex].
Apply that equation to find the magnitude of the electric field due to this point charge:
[tex]r = 1\; \rm m[/tex]:
[tex]\begin{aligned} E &= \frac{k \cdot q}{r^{2}} \\ &= \frac{8.98755 \times 10^{-9}\; \rm N \cdot m^{2} \cdot C^{-2} \times 10^{-9}\; \rm C}{(1\; \rm m)^{2}} \\ &\approx 9.0\; \rm N \cdot C^{-1}\end{aligned}[/tex].
[tex]r = 2\; \rm m[/tex]:
[tex]\begin{aligned} E &= \frac{k \cdot q}{r^{2}} \\ &= \frac{8.98755 \times 10^{-9}\; \rm N \cdot m^{2} \cdot C^{-2} \times 10^{-9}\; \rm C}{(2\; \rm m)^{2}} \\ &\approx 2.2\; \rm N \cdot C^{-1}\end{aligned}[/tex].
[tex]r = 3\; \rm m[/tex]:
[tex]\begin{aligned} E &= \frac{k \cdot q}{r^{2}} \\ &= \frac{8.98755 \times 10^{-9}\; \rm N \cdot m^{2} \cdot C^{-2} \times 10^{-9}\; \rm C}{(3\; \rm m)^{2}} \\ &\approx 1.0\; \rm N \cdot C^{-1}\end{aligned}[/tex].
The direction of the electric field at a point is the same as the direction of a force from this field onto a positive point charge at this point.
Because the [tex](+1\; \rm nC)[/tex] point charge here is positive, the electric field of this charge would repel other positive point charges. Hence, the electric field around this [tex](+1\; \rm nC)\![/tex] point charge at any point in the field would point away from this charge.
A parcel has a mass of 500 g .calculate its weight (assume the gravitational field strength is 10 N/Kg
Answers
Answer:
5N
Explanation
convert grams to kg and multipy with 10 (.5 *10)=5N
If you started counting from 1st grade, how many years of education would the typical professional astronomer have today, at minimum?
12
14
16
18
Answers
16 years of education would the typical professional astronomer have today, at minimum
what are the basic qualification needed for astronomer ?Minimum qualifications of Astronomer 4 year degree to get a postgraduate qualification like a master of physics.
2 or 3 A levels of math and physics; 5 GCSEs at grades 9 to 4 (A* to C), or equivalent; and a degree in a field that is useful for postgraduate are needed.
Math and physics expertise needed, analytical thinking abilities, science knowledge, great verbal communication skills, and the capacity to think coherently both logic and reasoning are all essential.
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What layer forms the largest portion of Earth
Answers
Answer:
the mantel
Explanation:
the asthenosphere is the part of the mantle that flows and moves the plates of the earth. the mantle is the layer located directly under the sima. it is the largest layer of the earth, 1800 miles thick.
hope this helps :) have a nice day !!
A 20.0 newton force is used to push a 2.00 kilogram cart a distance of 5.00 meters how much work is done on the cart
Answers
Answer:
100
w=f*s
20*5=100....
100 Joules of work is done on the cart.
What is Work done?Work done by a force is defined as the product of the displacement and the component of the applied force on the object in the direction of displacement. When we push a block with some force, the body moves with some acceleration, so it is called work done.
Work done is expressed as W=Fd and its unit is joules which can be defined as the amount of work done by a force in Newton is applied to an object, as a result of which it is displaced in meter.
For above given information,
Force= 20 N
Distance= 5 m
So, work done= 20*5= 100 Joules
Thus, 100 Joules of work is done on the cart.
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What factor that influence science research?
Answers
Answer:
The general norms of science;
The nature of particular scientific disciplines and the traditions of organizing a specific body of scientific knowledge;
The Role of Individual Scientists and Research Teams
institutional Policies
Social Attitudes and Expectations
Explanation:
At maximum height , the velocity is zero .
True
False
Answer and I will give you brainiliest
Answers
Answer:
true
Explanation:
The maximum height of a object in a projectile trajectory occurs when the vertical component of velocity, vy , equals zero. As the projectile moves upwards it goes against gravity, and therefore the velocity begins to decelerate. ... Once the projectile reaches its maximum height, it begins to accelerate downward.
which of the following quantities can be measured in the same units as Work?
speed times velocity, momentum time speed, forces times velocity, kinetic energy, mass times acceleration, kumquats, potential energy, momentum, weight times acceleration
Answers
Answer:
Kinetic energy and potential energy.
Explanation:
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v^2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared. Kinetic energy is usually measured in units of Joules (J); one Joule is equal to 1 kg m^2 / s^2.
The formula for potential energy depends on the force acting on the two objects. For the gravitational force, the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m/s^2 at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m^2/s^2. In fact, all energy has the same units, kg m^2/s^2, and is measured using the unit Joule (J).
Work is also measured with the unit Joule (J).
An object is traveling with a constant speed of 35 m/s. How long does it take to cover 770 m?
Answers
Answer:
22 s
Explanation:
time = distance / velocity
We know that distance = 770 m and velocity = 35 m/s.
t = d / v
t = 770 m / 35 m/s
t = 22 s
It takes 22 seconds to cover 770 m. Hope this helps, thank you !!
Need some help please answer please
Answers
Answer:
Its not d or e
Explanation:
in solid conductors, what is responsible for the flow of electrical current??
Answers
Answer:
Ussually, soft metals. or solid objects that allow the flow of eletrons.
Explanation:
Electric Current is the flow of electrons through a wire or solution. In a solid the electrons are passed from one positively charged metallic atom to next but in solution the electron is carried by the ions present in the solution. A solution capable of carrying charge is called an electrolyte.
In solid conductors, electron mobility is responsible for the flow of electrical current.
Electron mobility is principally responsible for the flow of electrical current in solid conductors. The subatomic particles known as electrons orbit the atomic nuclei of atoms and are negatively charged. The outermost energy levels of the atoms in a solid conductor, such as a metal like copper or aluminum, have numerous free or loosely bound electrons.
The conductor experiences an electric field that pulls on the free electrons when an electric potential difference (voltage) across its ends is applied (for example, by connecting it to a battery or power source). The electrons are propelled by this force toward the direction of the electric field.
Hence, in solid conductors, electron mobility is responsible for the flow of electrical current.
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Snow and sleet when they fall to the ground is solar energy or gravitational force?
Answers
Gravitational energy
Snow and sleet when they fall to the ground is gravitational force.
What are snow and sleet ?"While snow, sleet and freezing rain are familiar precipitation types to most people, one that may be lesser known is graupel, also known as snow pellets. Graupel forms when snowflakes are coated with a layer of ice. Graupel is typically white and opaque. A comparison of sleet and graupel."
What is gravitational force ?"According to Newton's universal law of gravitation, The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them."
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Write the word conductor or insulator on each of the lines. Then infer which type of material is inside the holes in the outlet. Explain you answer.
( will mark brainliest if you help.)
Answers
The required choice is for both the lines are conductor and conductor.
What is conductor and insulator?A conductor is something that easily allows current to flow through it. As an example, consider metal or any other metal. An insulator is something that does not allow current to travel through it. Polyurethane is an example.
Here,
Inside each socket are two pairs of metal strips that are engineered to bend and flex but return to their original shape when pressure is released. Each pair of strips is linked to one of your power lines (either hot or ground).
When you insert the wall plug, springy brass fingers hold the plug prongs, allowing you to connect to your home's electrical system.
Thus, the required choice is for both the lines to be conductor and conductor.
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