Give the measurement of the line in both centimeters and millimeters. (Assume the line starts at "0") I will give you brain list and explain

Answer:

D

Explanation:

it's the speed of the body I think

Answer:

E = 149.92 N/C

Explanation:

Given that,

The power emitted by a sinusoidal light is 60 W

Intensity is equal to the power per unit area. It can be given by :

[tex]I=\dfrac{P}{4\pi r^2}\\\\I=\dfrac{60}{4\pi \times (0.4)^2}\\\\I=29.84\ W/m^2[/tex]

The relation between the amplitude of the electric field and the intensity is given by :

[tex]I=\dfrac{E_o^2c \epsilon_o}{2}[/tex]

Here, [tex]E_o[/tex] is the amplitude of the electric field

[tex]E_o=\sqrt{\dfrac{2I}{c\epsilon_o}} \\\\E_o=\sqrt{\dfrac{2\times 29.84}{3\times 10^8\times 8.85\times 10^{-12}}}\\E_o=149.92\ N/C[/tex]

So, the amplitude of the electric field is 149.92 N/C.

Answer:

My answer is when the ball is going it experience kinetic energy which is the energy of a moving object while when the ball has stopped then it will have potential energy which means it's at rest so for the ball not to experience friction then there is a gain in kinetic energy and decrease in potential energy.

Answer:

Gain in Kinetic energy and decrease in Potential energy.

Explanation:

The energy possessed to a body due to its motion is called kinetic energy.

K = [tex]\frac{1}{2} .m.v^{2}[/tex]

The energy possessed to a body due to its position is called potential energy.

[tex]U =mgh[/tex]

Hence in free fall , the ball experiences gain in kinetic energy and decrease in potential energy.

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Answer:

a. True

Explanation:

In electromagnetic induction, the induced current always try to oppose the action that produces the induction (Lenz law). The approaching north end of the magnet will induce a current on the coil that will flow in an anticlockwise direction in the current (which induces a magnetism with the equivalent of a north pole of a magnet). The action of this induced current repels the magnet, in an effort to stop the motion that is producing the electromagnetic induction. When we also move the south pole of the magnet away from the coil, it induces an anticlockwise current in the coil, which tries to attract the south pole of the magnet so as to prevent it from moving. So both actions produce currents that flow in the same direction, which means that the needle of the galvanometer will deflect in the same direction.

Answer:

a. True

Explanation:

In electromagnetic induction, the induced current always try to oppose the action that produces the induction (Lenz law). The approaching north end of the magnet will induce a current on the coil that will flow in an anticlockwise direction in the current (which induces a magnetism with the equivalent of a north pole of a magnet). The action of this induced current repels the magnet, in an effort to stop the motion that is producing the electromagnetic induction. When we also move the south pole of the magnet away from the coil, it induces an anticlockwise current in the coil, which tries to attract the south pole of the magnet so as to prevent it from moving. So both actions produce currents that flow in the same direction, which means that the needle of the galvanometer will deflect in the same direction.

Answer:

The displacement is 20 m northward.

The distance is 44 m

Explanation:

Let northward motion be in positive direction

Let southward motion be in negative direction

Dispalcement is the shortest path covered by the hockey puck at a specified direction.

The dispalcement of the hockey puck will be calculated as;

Displacement = 26 m northward - 12m southward + 6 m northward

Displacement =  20 m in northward direction

Distance is the total path covered by the hockey puck.

Distance = 26 m + 12m + 6 m

Distance = 44 m

Answer:

The displacement is 20 m northward.

The distance is 44 m

Explanation:

Answer:

23 student photos

Explanation:

All you have to do is divide 1,127 by 49. So take the photos and fill each poster board. There will be no photos left! Hope this helps!

Answer:

113.85 m

Explanation:

When the car is on the pavement:

v₀ = 0 m/s

a = 5.75 m/s²

t = 4.4 s

Find: Δx and v

Δx = v₀ t + ½ at²

Δx = (0 m/s) (4.4 s) + ½ (5.75 m/s²) (4.4 s)²

Δx = 55.66 m

v = at + v₀

v = (5.75 m/s²) (4.4 s) + 0 m/s

v = 25.3 m/s

When the car is in the mud:

v₀ = 25.3 m/s

v = 0 m/s

a = -5.5 m/s²

Find: Δx

v² = v₀² + 2aΔx

(0 m/s)² = (25.3 m/s)² + 2 (-5.5 m/s²) Δx

Δx = 58.19 m

The total displacement is therefore:

55.66 m + 58.19 m = 113.85 m

Answer:

The answer choice is C because La Nina Is the cooled part of the sea while El Nino is the warmed part of the sea.

Explanation:

You don't need to thank me... : )

distance(d) = speed(s) × time (t)

= 22.3 × 8.5

= 189.55m

The correct answer is A. Seed growth

Explanation:

Experiments often involve two main variables: the independent variable and the dependent variable. In an experiment, the dependent variable is always the main factor being studied; also, this is "dependent" because it is affected by other factors. In the case presented, the dependent variable is seed growth because this is the specific phenomenon that is being analyzed. Moreover, this factor is affected by the changes in pH. On the other hand, the pH, which is the second factor is the independent variable because this is not affected by the first variable and it is manipulated on purpose.

Answer:

Magnitude = 14 metres

Direction = eastward.

Explanation:

A cross-country skier moves 36 meters eastward, then 44meters westward, and finally 22 meters eastward.

Whats the Magnitude and Direction?

The magnitude and direction will be the displacement of the cross country skier.

Let the east ward be positive and the west ward be negative.

Since the skier moves 36 meters eastward, then 44meters westward, and finally 22 meters eastward. Then, that will be:

36 - 44 + 22 = 14

Since the answer is positive, the magnitude is 14 and the direction is east ward.

Answer:

c) a tube light

Explanation:

a solar panel converts light energy into electricity

a tube light converts electricity into light

Answer:

D) 255pa

Explanation:

pressure= force/area

force = weight

weight= mass* gravitational acceleration

weight= 0.2kg*10m/s²

weight= 2N

area= πr² where r=1/2diameter

r=1/2diameter

r=1/2(10cm)

r=5cm or 0.05m

area= πr². where π 's approximate value is 3.14

area=3.14(0.05m)²

area=3.14 * 0.0025m²

area=0.00785m²

pressure= force/area

pressure=2N/0.00785m²

pressure=255pa approximately

Answer:

d 255 Pa

Explanation:

Answer: 0.145 seconds

Explanation:

Given that Roger Clemens could routinely throw a fastball at a horizontal speed of 119.7 m/s. How long did the ball take to reach home plate 17.3 m away

Since the speed is horizontal

Using the formula for speed which is

Speed = distance/time

Where

Speed = 119.7 m/s

Distance covered = 17.3 m

Time is what we are looking for

Substitute all the parameters into the formula

119.7 = 17.3/ time

Make time the subject of formula

Time = 17.3 / 119.7

Time = 0.145 seconds.

Therefore, it will take 0.145 seconds to reach the home plates

Answer:

Time taken for the car to travel a distance of 4.50 m = 1.40 seconds

Explanation:

velocity of toy car = 3.21 m/s

distance travelled by toy car = 4.50 m

Time = ?

[tex]Velocity = \frac{Distance}{Time} \\Time =\frac{Distance}{Velocity}[/tex]

[tex]Time = \frac{4.50}{3.21} \\Time = 1.40s[/tex]

Therefore, the time taken for the car to travel a distance of 4.50 m = 1.40 seconds

Answer:

h = 24.11 m

Explanation:

Given that,

The potential energy of the snowball is 520 J

The mass of the snowball is 2.2 kg

We need to find the height of the hill. The potential energy of an object is given by the formula as follows :

[tex]E=mgh[/tex]

g is acceleration due to gravity

h is height of the hill

[tex]h=\dfrac{E}{mg}\\\\h=\dfrac{520}{2.2\times 9.8}\\\\h=24.11\ m[/tex]

So, the height of the hill is 24.11 m.

Answer:

The weight of the spacecraft is greater on Planet A but the mass is same on both planets.

Mass is same on both planets because mass is always constant which means it doesn't change when place varies.Weight of the spacecraft is more in planet A because it has more value of acceleration due to gravity. (g=GM/R^2)

Thus the first statement is true

Answer: Hi!

A terrestrial planet is composed of a solid substance like rock or earth. A few examples are our planet, Earth, and the red planet, Mars. These are the planets that are the closest to the sun. There are four terrestrial planets in total. The only known terrestrial planet that has life, however, is our own, Earth! Earth has the perfect conditions for supporting life forms.

Hope this helps!

Answer:

Jupiter

Explanation:

question : Which planet is terrestrial?

Jupiter

Mars

Saturn

Uranus

Answer:

1530.4?

Explanation:

1500.0

+030.4

1530.4

Answer:

Weight is directly proportional to our mass and acceleration due to gravity of that planet

Answer:

Your mass and the mass of the planet

Answer:

The length of chain she is allowed is 1.169 ft

Explanation:

The given parameters are;

The linear density of the chain = 0.83 lb/ft

The weight limit of the chain she wants = 1.4 lb

The formula for linear density = Weight/length

Therefore, in order to keep the chain below 1.4 lb, we have;

Linear density = Weight/length

Therefore;

The maximum length she wants = Weight/(Linear density)

Which gives;

The maximum length she wants = 1.4 lb/(0.83 lb/ft) =1.169 ft

Therefore;

The length of chain she is allowed = 1.169 ft.

Answer:

The answer is Radiation.

Explaination:

A and B are wrong because you can't have convection or convection currents without air, and all the air has been removed from the box.

D is wrong because there is no liquid in the box.

C is correct because heat can be transmitted even through a vacuum by radiation (e.g., the Sun). You can quickly feel the heat radiated by a piece of white-hot iron.

Explanation:

Yes, because the object will move to the right

Answer:

Explanation:

Sometimes.

Sometimes not.

If the surface is frictionless,  and the mass is 5 kg and the object is on a table, then likely 2 N will be enough to get it going.

If the object is on a table that needs a sandpaper/stain finish, then likely the 5 kg object will not overcome the rough surface of the table and there will likely not be any motion.

If the force is 2N and the object is on a frictionless surface and the object is a 1000kg mass, there might be motion but inertia would certainly be hard to overcome and I doubt there would be motion on planet earth.

2N is just not a very big force.

Answer:

The total distance traveled is 28 inches.

The displacement is 2 inches to the east.

 I hope this helps :)

Answer

A

Explanation:

It is the rate of change of speed per unit time

Answer:

The work done by the gas is 55.76 L*atm.

Explanation:

The work can be found as follows:

[tex] W = p\Delta V = p(V_{f} - V_{i}) [/tex]     (1)

Where:

p: is the pressure = 3.4 atm

V(f): is the final volume = 24 L

V(i): is the initial volume = 7.6 L

By replacing the above values into equation (1) we have:

[tex]W = p(V_{f} - V_{i}) = 3.4 atm(24 L - 7.6 L) = 55.76 atm*L[/tex]  

Therefore, the work done by the gas is 55.76 L*atm.

I hope it helps you!

Answer:

200 m North

Explanation:

1. Let's represent north as positive and south as negative.

       (100 m)+(-200 m)+(300 m)

                                = 200 m

2. Since the answer is positive, the units are 100 m NORTH since north represents positive.

Answer:  O furo diminui enquanto a chapa aumenta a sua dimensão.

(The diameter decreases and the dimensions of the metal increases)

Explanation:

I will answer in English:

Here we have a piece of metal with a small hole on it, that is heated in a hoven.

We know that when a piece of metal is heated, it will expand (the density decreases, so the dimensions of the piece of metal increase).

Now, particularly, the hole will also expand but inwards, as each "extreme" of the piece of metal, will expand into where it has less resistance, so it will expand in the region where there is no material. This "inwards" expansion is why the diameter of the hole will decrease.

Answer:

True the plastic will float because of the principle of flotation or buoyancy

Explanation:

Buoyancy explains it all!!

Buoyancy  is the upward force/upthrust experienced by a body immersed totally or partially in a liquid.

According to the principle of flotation:

"when a body is totally or partially immersed in liquid it experiences an upthrust which is equal to the volume of fluid displaced"

The plastic will float due to the fact the average density of the total volume of the plastic and the air inside it is less than the same volume of water it is floating in