Help me please, help

Answer:

The direction is that of a 3rd quadrant angle

Explanation:

when you have 2 45 angles it equals to 90 then with the 90 we multiply by 2 due to the 2 adjacent angles equating to 180 which swings it to the 3rd quadrant angle

Answer:

a ) 19,536.72 J,

b ) ( About ) 84°C

Explanation:

a ) We can solve this problem assuming that the dishwater remains a constant 78°C the entire duration.

Q = mass of the glass [tex]*[/tex] specific heat of the glass

The mass of the glass is given by 401 g, the specific heat by 840 J / kg [tex]*[/tex] C. Respectively the change in temperature would be the difference between the temperature of the dishwater, and that of the glass. As we want the units in Joules, we need to first convert the 401 g ⇒ kilograms.

401 g = 401 / 1000 kg = 0.401 kg,

Q = 0.401 kg [tex]*[/tex] 840 J / kg 19,536.72 J

b ) We know that the specific heat capacity of water is 4.184 J / g [tex]*[/tex] C. As the final temperature will be common between each substance, we can make their respective heat absorbed, the same. Note that the heat capacity is given in J / g

0.023 kg = 0.023 [tex]*[/tex] 1000 = 23 g,

0.18 kg = 180 g

[tex]- ( 180 )( 4.184 )( x - 93 ) = 23( 4.184 )( x - 14 )[/tex],

[tex]-753.12x+70040.16=96.232x-1347.248[/tex],

[tex]-753.12x=96.232x-71387.408[/tex],

[tex]-849.352x=-71387.408[/tex],

[tex]\frac{-849.352x}{-849.352}=\frac{-71387.408}{-849.352}[/tex],

[tex]x=84.04926\dots[/tex]

The final temperature will be about 84°C

Answer:

Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water

Explanation:

Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth. If a cloud is colder, like it would be at higher altitudes, the water droplets may freeze to form ice.

Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth.

Answer:

C :)

Explanation:

Answer:

1. 12 cm

2. 0.133 m

3. 0.03 m

4. Plane mirror

Virtual image

Upright

Behind the mirror

The same size as the object

Concave mirror when the object is located a distance greater than the focal length from the mirror's surface

Real image

Inverted image

In front of the the mirror

Diminished when the object is beyond the center of curvature

Same size as object when the object is placed at the center of curvature

Enlarged when the object is placed between the center of curvature of the mirror and the focus of the mirror

Concave mirror when the object is located a distance less than the focal length from the mirror's surface

Virtual image

Upright image

Behind the the mirror

Enlarged

Convex mirror

Type = Virtual image

Appearance = Upright image

Placement = Behind the mirror

Size = Smaller than the object

Explanation:

1. For plane mirror, since there is no magnification, the virtual image distance from the mirror = object distance from the mirror = 12 cm behind the mirror

2. The height of the object = 0.3 m

The distance of the object from the mirror = 0.4 meters

Height of image formed = 0.1 meter

We have;

[tex]Magnification, \ m = \dfrac{Image \ height }{Object \ height } = \dfrac{Image \ distance \ from \ mirror }{Object\ distance \ from \ mirror }[/tex]

[tex]m = \dfrac{0.1}{0.3 } = \dfrac{Image \ distance \ from \ mirror }{0.4 }[/tex]

Image distance from the mirror = 0.1/0.3×0.4 = 2/15 = 0.133 m

Image distance from the mirror = 0.133 m

3. [tex]m = \dfrac{Image \ height}{0.10 } = \dfrac{0.06 }{0.20 }[/tex]

The image height = 0.06/0.2×0.1 = 3/100 = 0.03 meter

The image height = 0.03 meter

4. Plane mirror

Type = Virtual image

Appearance = Upright image with the left transformed to right

Placement = Behind the mirror

Size = The same size as the object

Concave mirror when the object is located a distance greater than the focal length from the mirror's surface

Type = Real image

Appearance = Inverted image

Placement = In front of the the mirror

Size = Diminished when the object is beyond the center of curvature

Same size as object when the object is placed at the center of curvature

Enlarged when the object is placed between the center of curvature of the mirror and the focus of the mirror

Concave mirror when the object is located a distance less than the focal length from the mirror's surface

Type = Virtual image

Appearance = Upright image

Placement = Behind the the mirror

Size = Enlarged

Convex mirror

Type = Virtual image

Appearance = Upright image

Placement = Behind the mirror

Size = Smaller than the object.

Answer:

1. The mirror is 12 centimeters away from the image. This is a plane mirror with a flat reflecting surface. The distance between the object and the mirror surface is equal to the distance between the mirror surface and the image.

2. hiho=siso

0.1 m0.3 m=si0.4 m

Multiply each side of this equation by 0.4.

0.4×(0.10.3=si0.4)×0.4

si=0.40.3

si = 0.133 m  

3. hiho=siso

hi0.10 m=0.06 m0.02 m

Multiply each side of this equation by 0.10.

0.10×(hi0.10=0.060.20)×0.10

hi=0.0060.20

hi = 0.03 m

4.

 Image Formation

Mirror  Type  Appearance  Placement  Size  

Plane  Virtual Erect (Upright); Appears to have left and right reversed  Behind the mirror; the distance between the mirror and the image is equal to the distance between the mirror and the object  Depends on the size of the mirror and placement of the object  

Concave (when the object is located a distance greater than a focal length from mirror's surface)  Real  Inverted  In front of the mirror Smaller than the object  

Concave (when object is located a distance less than the focal length of the mirror) Virtual  Erect (Upright)  Behind the mirror Enlarged  

Convex Virtual  Erect (Upright)  Behind the mirror  Smaller than the object  

Explanation:

PENN

Answer: the best times to see it would be from 10 pm to 1 am, meaning when the night skies are dark and clear. The best months to see it would be from April to late August. Whereas the best places in the world to view them would be closer to the arctic circle, this includes Canada, Alaska, Iceland and Greenland.

Explanation:

Hope this helps

Auroras are created by disruptions in the magnetosphere induced by the solar wind. The greatest times to see it are between 10 p.m. and 1 a.m.

Auroras are created by disruptions in the magnetosphere induced by the solar wind. The paths of charged particles in the magnetospheric plasma are altered as a result of these disruptions.

These particles, primarily electrons, and protons fall to the upper atmosphere.

The greatest times to see it are between 10 p.m. and 1 a.m. when the night skies are dark and clear. It is recommended to visit between April and late August.

The greatest spots to see them are closer to the arctic circle, which encompasses Canada, Alaska, Iceland, and Greenland.

Hence the greatest times to see it are between 10 p.m. and 1 a.m.

To learn more about the aurora borealis refer to the link;

https://brainly.com/question/25766402

Angle of incidence always equals angle of reflection. Think of a tennis ball being hit into a wall. The ball will bounce off at the same angle that it approached with. The angles mentioned are formed through the line called the "normal", which is the line perpendicular to the surface.

Answer:

Spurious relationship

Explanation:

In statistics a spurious relationship is a correlated mathematical  relationship of covariation between two variables or more which by themselves have no cause and effect relationship as a result of a coincidence or the existence of a third or confounding factor

The variables have covariation due to their correlation but they don't have a cause and effect relationship

An example of a spurious relationship is the increase in ice cream sales when there is an observed increase in the rate of drowning.

Answer:

30kg-m/s

Explanation:

momentum = mass x velocity

Answer:

They are winds that blow in the opposite direction of a normal wind

Explanation:

Answer:

B.) They are winds that blow in the opposite direction of a normal wind.

Explanation:

it's correct trust

Answer:

resultant is a single force that can replace the of a number of forces , equililbrant is a force that is exactly opposite to resultant

Explanation:

Answer:

[tex]\boxed{299}[/tex]

Explanation:

In this reaction, Sum of Atomic Masses of Left side = Sum of Atomic Masses of right side

Let the atomic mass of Thorium be x

So,

233 = 4 + x

Subtracting 4 to both sides

x = 233-4

x = 229

Answer:

-16°C

Explanation:

PV = nRT

V and n are constant.

P / T = P / T

(2 atm + 1 atm) / (266 K) = (1.9 atm + 1 atm) / T

T = 257.1 K

T = -16°C

Answer:

the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.

Explanation:

HOPE I HELPED

PLS MARK BRAINLIEST

DESPERATELY TRYING TO LEVEL UP

                 ✌ -ZYLYNN JADE ARDENNE

Answer:

is the process by which an unstable atomic nucleus loses energy by radiation

Explanation:

hope this helps

Answer:

2. The temperature doubles.

014) 48.6 J

015) 13,700 J

016) 5.94×10⁻²¹ J

Explanation:

PV = nRT

P and n are constant.

nR/P = k

V/T = k

If the volume doubles, the temperature also doubles.

014) The kinetic energy per atom is:

KE = 3/2 kT

KE = 3/2 (1.38×10⁻²³ J/K) (21 + 273) K

KE = 6.09×10⁻²¹ J

The total kinetic energy is:

KE = (6.09×10⁻²¹ J) (7.99×10²¹)

KE = 48.6 J

016) The kinetic energy per atom is:

KE = 3/2 kT

KE = 3/2 (1.38×10⁻²³ J/K) (14 + 273) K

KE = 5.94×10⁻²¹ J

015) The total kinetic energy is:

KE = (5.94×10⁻²¹ J) (3.82 mol) (6.02×10²³ atom/mol)

KE = 13,700 J

A.  Distance . . . . . No.  Distance is a scalar quantity.  It has no direction.

B.  Speed . . . . . No.  Speed is a scalar quantity.  It has no direction.

C.  30 m/s . . . . . No.  30 m/s is a speed without a direction, and I just told you that speed is a scalar quantity.

D.  9.8 m/s² down . . . YES !  It has a size AND a direction. It's a vector.

Vector quantities are physical quantities that differ from one another in that they have both magnitude and direction. The right answer is D.

Vector quantities are physical quantities that differ from one another in that they have both magnitude and direction. Force, Displacement, momentum, torque, velocity, and acceleration are some examples.

A vector quantity is one with both magnitude and direction. As a result, the vector quantity choice is 9.8 m/s² down. This is due to the fact that this choice has a magnitude of 9.8 and a direction of down.

Hence, the correct option is D.

Learn more about Vector Quantities here:

https://brainly.com/question/774036

#SPJ2

Answer:

diagram?

Explanation:

Answer:

-150

Explanation:

I just did it on EDGE2020, and it's 100% correct! Please heart and rate if you found this answer helpful.

Answer:

D The density of methanol must be less than the density of water.

Explanation:

Ice sinks in methanol, so the density of ice is greater than the density of methanol.

Ice floats in water, so the density of ice is less than the density of water.

Since the density of ice is the same in each case, the density of methanol must be less than the density of water.

ρ_methanol < ρ_ice < ρ_water

Answer:

T = 261 K

T = -12.2°C

Explanation:

PV = nRT

If P and n are constant:

V / T = V / T

2.75 L / (273.15 + 21) K = 2.44 L / T

T = 261 K

T = -12.2°C

Answer:

4

Explanation:

The number 4 that is infront of the CHA(4CHA) means to say that there are 4C 4H and 4A

Tip:the number infront of a equation is call the coefficient

Answer:

Cools ; size

Explanation:

The rate at which magma cools determines the size of the crystals in the new rock. Igneous rocks are formed from the cooling and solidification of molten magma which finds its way to the surface or depth of very low pressure beneath the surface. This place or depth of cooling of magma affects the cooling rate and hence the size of the crystals formed. Igneous rocks formed at depths below the surface have more time to cool and allows more time for Crystal growth and hence produce coarse grained crystal grains called Intrusive igneous rocks which have significantly larger crystals than those formed on the surface which cools rapidly and allowing very little time for crystal growth giving rise to the formation of fine grained crystals and are called extrusive igneous rocks.

Answer:

A. -50 m/s

Explanation:

Given

Velocity of Chairlift = +15m/s

Velocity of Skier = -35m/s

Required

Determine the velocity of the skier relative to the chairlift

Basically, relative velocity is the difference between the two velocities;

Having said that;

Relative velocity of the skier relative to the chairlift = Velocity of the Skier - Velocity of the Chairlift

Relative velocity of the skier relative to the chairlift = -35m/s - (+15m/s)

Open bracket

Relative velocity of the skier relative to the chairlift = -35m/s - 15m/s

Relative velocity of the skier relative to the chairlift = -50

Answer:

Option A is an accurate one.

Explanation:

The other provided alternative is not related to the information provided there. So the response to the above seems to be the correct one.

Answer:

Bruh............

Explanation:

Conductors are the substance that transmits heat or electricity through them, insulators are basically the opposite. They prevent heat or electricity from passing through them. Semiconductors can act as either a conductor or an insulator under different conditions.

First of all, what is a cell?

A cell is a power source. It converts chemical energy into electrical energy which then allows a current to flow.

Then, what is a voltage?

A voltage is an electrical force required to push an electric current.

The answer to your question

The powers source requires a voltage of 1.5 to push the electrical current around the circuit

Explanation:

the colour change of PH indicator is caused by the dissociation of the H+ ion from the indicator itself recall the pH indicator are not only natural dyes but also a weak acid the dissociation of weak and Indicator causes a solution to change color

Explanation:

They are;

hope it helps...