The diagram shows two vectors that point west and north. What is the magnitude of the resultant vector? 13 miles 17 miles 60 miles 169 miles

Answer:

Option (c)

Explanation:

A compound microscope is an optical instruments which can use to see the highly magnified image of very tiny objects.

It consists of two convex lenses.

1. Objective lens: It is a convex lens of short focal length and of short aperture.

It is located at the object side.

2. Eyepiece: It is a convex lens of comparatively large focal length and of large aperture.

It is located at the side from where we can see the image of the object.

Answer: HEAT

Explanation:

Final answer:

The sun's energy is most useful to humans after it is converted to chemical energy, which we obtain through food, or into thermal energy and electricity via different solar energy technologies.

Explanation:

The sun’s energy is most useful to humans after it is converted to chemical energy. This energy conversion occurs through various methods, and chemical energy can be released when we digest food that originates from plants and, to a lesser extent, animals. Additionally, sunlight is converted into thermal energy and electricity through the use of solar panels and other photovoltaic systems, which can be used directly or stored for later use.

For instance, plants convert sunlight into chemical energy through the process of photosynthesis. This chemical energy is then consumed when we eat plants or animals that have fed on plants. Furthermore, the photoelectric effect allows for the conversion of solar energy into electricity which can be directly used or stored in batteries.

Another example is that solar energy can heat water in solar collectors and produce electricity using solar heat engines or photovoltaic systems. The energy from the sun is the origin of wind power and hydro energy as well, which are indirect ways in which solar energy is harnessed.

For the measurement of the temperatures correctly the thermometers Should Fully dipped into Fluids  So that it is dipped into the Fluids and give you Correct reading.

Further Explanation:

Explanation:

First of all we should check that the liquid in the thermometer should be at below the room temperature. If it is not below this temperature please bring its temperature below the room temperature by shaking the thermometer.

When the temperature below the room Temperature:

When the Temperature of the thermometer is below the room temperature then dipped the thermometer into the fluid of which you have to checked the temperature. Make sure that the Thermometer dipped into the fluid properly.

Difficulties:

If thermometer is not dipped properly in the fluid then the temperature of fluid should not be measured correctly an there should be an error in the measurement.

When you take off the thermometer from the fluid then the Liquid in the thermometer can be leveled down because of sudden change of Temperature of the temperature of fluid to the room Temperature.

Answer Details:

Subject: Physics

Level: High School.

Key Words:

Explanation:

When the temperature below the room Temperature:

Difficulties:

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Newton’s 2nd law states that Force is equal to the product of mass (m) and acceleration (a):

F = m a                                  ---> 1

While in magnetic forces, force can also be expressed as:

F = q v B                               ---> 2

where,

q = total charge

v = velocity = 45 cm / s = 0.45 m / s

B = the magnetic field = 85 T

First we solve for the total charge, q:

q = 3.8 × 10^-23 g (1 mol / 23 g) (6.022 × 10^23 electrons / mol) (1.602 × 10^-19 C / electron)

q = 1.594 × 10^-19 C

We equate equations 1 and 2 then solve for acceleration a:

m a = q v B

a = q v B / m

a = [1.594 × 10^-19 C * 0.45 m / s * 85 T] / 3.8 × 10-26 kg

a = 160,437,862.2 m/s^2

Therefore the maximum acceleration of Na ions is about 160 × 10^6 m/s^2.

Answer:

[tex]a = 1.61 \times 10^8 m/s^2[/tex]

Explanation:

Force due to magnetic field on the position of Na+ ions is given as

[tex]F = qvB[/tex]

here we know that

[tex]q = 1.6 \times 10^{-19} C[/tex]

[tex]v = 45 cm/s[/tex]

[tex]B = 85 T[/tex]

now the force will be given as

[tex]F = (1.6 \times 10^{-19})(0.45)(85)[/tex]

[tex]F = 6.12 \times 10^{-18} N[/tex]

now we know that acceleration is given as

[tex]a = \frac{F}{m}[/tex]

[tex]a = \frac{6.12 \times 10^{-18}}{3.8 \times 10^{-26}}[/tex]

[tex]a = 1.61 \times 10^8 m/s^2[/tex]

The forces acting on a moving go-cart include friction, normal force, and the force applied by individuals pushing the cart.

As the go-cart moves along, several forces act on it:

Force of friction: This force opposes the motion of the cart and is caused by the interaction between the wheels and the ground.

Normal force: This force acts perpendicular to the surface and supports the weight of the cart.

The force applied by Debbie and her friend: These forces cause the cart to accelerate and move.

The period (T) of uniform circular motion if the velocity is [tex]40.0 m/s[/tex] and centripetal acceleration is [tex]20.0 m/s^2[/tex] is approximately 8.9 seconds.

Finding the Period (T) in Uniform Circular Motion

To calculate the period (T) of an object in uniform circular motion, we need to relate the given velocity and centripetal acceleration to the formula involving period and radius.

First, let's use the centripetal acceleration formula:

[tex]|a| = |v|^2 / r[/tex]

We know:

By rearranging the formula to solve for the radius (r):

[tex]r = v^2 / a[/tex]

Now, substitute the given values:

[tex]r = (40.0 m/s)^2 / 20.0 m/s^2 = 1600 / 20 = 80 m[/tex]

Next, we use the relationship between the period and radius:

[tex]a = 4\pi^2r / T^2[/tex]

Rearranging to solve for T:

[tex]T^2 = 4\pi^2r / a[/tex]

Substitute the known values:

[tex]T^2 = 4\pi^2 * 80 / 20\\T^2 = (4 \times 9.87 \times 80) / 20 = 1583 / 20 = 79.16[/tex]

Therefore:

[tex]T = \sqrt{79.16} = 8.9 s[/tex]

Evaporation is always a cooling process, as it involves the removal of higher energy molecules from the liquid, which in turn lowers the temperature of the remaining liquid.

Evaporation is always a cooling process. This occurs because, during evaporation, liquid molecules with higher kinetic energy escape into the gas phase, thereby lowering the average kinetic energy of the remaining liquid molecules, which results in a decrease in temperature. An everyday example of evaporative cooling can be observed when water on the skin evaporates, leaving the skin feeling cooler. On the other hand, condensation, which is the reverse of evaporation, is a warming process as it releases heat equal to the heat of vaporization.

Final answer:

The vastly different conditions on Venus compared to Earth are primarily due to Venus experiencing a runaway greenhouse effect, which led to high temperatures and surface pressures, and the permanent loss of water. Earth managed to maintain liquid water and moderate conditions, unlike the dry and inhospitable Venus.

Explanation:

Initial Difference Leading to Varying Planetary Conditions

The one initial difference that is ultimately responsible for the vastly different conditions on Venus compared to Earth is the presence and fate of water which led to a runaway greenhouse effect on Venus. Unlike Earth, which managed to maintain a delicate balance allowing liquid water to persist, Venus experienced a runaway greenhouse effect due to intense surface heating and a lack of water recycling back into the atmosphere. This resulted in temperatures on Venus reaching around 730 K (over 850 °F), high surface pressure 90 times that of Earth, and a dense and dry atmosphere that diverged greatly from Earth's moderate condition that supports life.

While Venus started with comparable conditions to Earth and Mars, its proximity to the Sun and the subsequent runaway greenhouse effect caused permanent water loss, which contrasted sharply with Earth's retention of water and Mars's freezing over due to lost atmospheric CO₂. Venus's atmosphere became massive and dry, with a CO₂-dominated environment that traps heat and prevents the establishment of the conditions necessary for life as we know it.

Answer:

A. Multiply the force

Explanation:

Simple machines are used to make our work easier. They either change the direction of force or multiply the force or both. Simple machines are lever, wedge, pulley, screw etc.

Example of how a simple machine multiplies force:

In a lever, effort is put at a longer end which is able to lift a heavier load at the short distance.

The last total solar eclipse visible in Minnesota was on August 21, 2017 and was witnessed by millions of people across the United States.

The last total solar eclipse visible in Minnesota occurred on August 21, 2017. This eclipse was viewable across a large swath of the continental United States. Figure 4.25 shows the path of the moon's shadow as it traversed the United States, covering about 3000 miles in the process. This astronomical event was witnessed by millions of people, making it an extraordinary spectacle.

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A steam burn is more damaging than a burn from boiling water at the same temperature due to the release of latent heat energy when steam comes into contact with the skin.

A steam burn is more damaging than a burn from boiling water at the same temperature because steam carries more energy due to its phase change from water to steam. When water is heated to boiling point, it absorbs a significant amount of heat energy to change from liquid to gas. When this steam comes into contact with the skin, it releases the latent heat, causing a more severe burn.

The first digit of an interstate highway loop route number that meets the primary route at both ends is always an odd number, indicating it is a spur or a loop off of the main interstate route.

The question relates to the numbering system of interstate highways in the United States. If an interstate highway is a loop that reconnects with the primary interstate route, the first digit of its route number will always be an odd number.

Specifically, these loops are usually three-digit numbers with the last two digits matching the main interstate and the first digit signifying it is a loop or spur.

For example, Interstate 495 would be a loop off of Interstate 95.

Explanation:

Is the site from an established institution or reputed organization?

Who is providing the information?

What is the author's credential?

Is the site bias?

Is the site trying to influence you?

Is the author's contact information provided?

When the site was last updated?

When the site was first created?

What is the major domain of the web address?

Final answer:

The decay of radioactive isotopes, differentiation of Earth's iron core, gravity-driven compression, and meteoric bombardment all triggered the early Earth to heat up and differentiate into distinct layers, creating the conditions for the formation of the iron-nickel core, mantle, crust, and the atmosphere.

Explanation:

The question addresses the processes that have shaped the early Earth. Particularly, it asks how the decay of radioactive isotopes, the differentiation of Earth's iron core, gravity-driven compression, and meteoric bombardment all contributed to the early state of our planet. The correct term to fill in the blank is that all these processes caused early Earth to heat up and differentiate into layers.

Due to radioactive decay and gravitational compression, the Earth experienced significant heating, resulting in the melting of the planet's interior. This allowed molten metal to sink towards the center to form the dense iron-nickel core, while lighter silicate materials floated to the surface, eventually forming the Earth's crust and mantle. Meteoric bombardment and collisions with other celestial bodies, including a massive impact believed to have led to the formation of the Moon, further contributed to the heating and differentiation of the Earth. Simultaneously, these processes have led to the creation of Earth's atmosphere, primarily through volcanic degassing and contributions from comets and meteorites.

Chemical compounds that absorb significant amounts of the sun's energy in the atmosphere are greenhouse gases such as carbon dioxide, methane, and water vapor, along with dust particles.

The chemical compounds that absorb large amounts of the sun's energy in the Earth's atmosphere are primarily greenhouse gases. These include carbon dioxide, methane, and water vapor. These substances have the ability to absorb and emit radiation within the thermal infrared range, which in turn warms the atmosphere. Although nitrogen and oxygen are the most abundant gases in the atmosphere, they do not absorb significant amounts of the sun's energy compared to greenhouse gases. Dust particles in the atmosphere can also absorb some solar energy, but not as significantly as greenhouse gases do. Therefore, the correct answer to the given options would be: b. Carbon dioxide, water vapor, and dust.

The gravitational force between earth and the sun

F = (G*Me*Ms)/Des

So exerting force will be same on each other.