sunlight strikes the surface of a lake at an angle of incidence of 42.0°. at what angle with respect to the normal would a fish see the sun?

Answer:Convergent boundaries are areas where plates move toward each other and collide. These are also known as compressional or destructive boundaries. Subduction zones occur where an oceanic plate meets a continental plate and is pushed underneath it. Subduction zones are marked by oceanic trenches.

pLS THANK ME AND VOTE ME BRAINLIEST ME

Explanation:

If you walk at 1 km/h down the aisle towards the front of a train that moves at 60 km/h, your speed relative to the ground would be 61 km/h.

This is because we add the velocity of the person to the velocity of the train to determine their combined velocity relative to the ground. If the person were to walk in the opposite direction of the train, their speed relative to the ground would be 59 km/h since we would subtract their velocity from that of the train. The same concept applies to any situation where two objects are moving relative to each other.

For example, let's say that two cars are driving in the same direction on a highway. Car A is driving at 70 km/h and Car B is driving at 90 km/h.

The relative velocity of Car A with respect to Car B would be 20 km/h (90 km/h - 70 km/h) while the relative velocity of Car B with respect to Car A would be -20 km/h (70 km/h - 90 km/h).

So therefore if you walk at 1 km/h down the aisle towards the front of a train that moves at 60 km/h, your speed relative to the ground would be 61 km/h.

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Answer:

A

Explanation:

THAT is th equation for Potential Energy

Answer:

Move the opposite direction ( at a lesser magnitude of velocity)

Explanation:

Answer:

5miles North

Explanation:

The displacement to the store is 5miles northward.

Displacement is the distance traveled in a specific direction. Displacement is a vector quantity.

A vector has both magnitude and direction.

The magnitude is the amount of that quantity

The direction is its orientation from a reference.

 Therefore, the displacement is 5miles north

Explanation:

1) This is a synthesis reaction (two or more reactants combine to form a single product).

2) The coefficients are added to balance the reaction.

3) Adding the states of matter (solid, liquid, gas) will make the reaction more precise.

Answer:

1

Explanation:

The frequency of an oscillating body is given by :

f = 1/T

Whre

T is the time period or the periodic time

The product of frequency and the periodic time will be :

\(f\times T\\\\=f\times \dfrac{1}{f}\\\\=1\)

Hence, the required product is equal to 1.

Assuming the water exerts a constant drag force equal to 5.00x10 N and the acceleration is constant:  No correct answer given. The correct option is b.

In order to calculate the power required to accelerate the boat to a velocity of 20.0 m/s, we will have to use the formula for the power which is given as:

P = Fv

Where: P is the power, F is the force, and v is the velocity.

The force acting on the boat is the drag force which is given as F = 5.00x10 N.

The final velocity of the boat is 20.0 m/s and it starts from rest which implies the initial velocity is u = 0.

The time taken by the boat to reach the final velocity is given as t = 5.00 seconds.

So the acceleration can be calculated as follows:

acceleration (a) = (v - u)/t

Where: v is the final velocity = 20.0 m/s

u is the initial velocity = 0

t is the time taken = 5.00 seconds

a = (20.0 - 0)/5.00 = 4.00 m/s².

Now that we have the acceleration, we can find the mass of the boat using the formula:

F = ma

Where: F is the force acting on the boat m is the mass of the boat and a is the acceleration calculated above. Rearranging the above formula, we get m = F/a = 5.00x10 N/4.00 m/s²= 1250 kg.

Now that we know the mass of the boat, we can calculate the power using the formula: P = Fv = mav

Where: P is the power, F is the force, m is the mass of the boat, v is the final velocity, and a is the acceleration calculated above.

Substituting the values, we get: P = 1250 kg x 20.0 m/s x 4.00 m/s² = 100,000 W = 100 kW. Now, converting the power to hp, we get: 1 hp = 746 W. Therefore, the power required is: P = 100,000 W/746 W/hp ≈ 134 hp. Hence, the answer is No correct answer given. The correct option is b.

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Complete question:
How much power would a 1.00x10 kg speed boat need to go from rest to 20.0 m/s in 5.00 seconds assuming the water exerts a constant drag force equal to 5.00x10 N and the acceleration is constant? 2 Select one: a. 69.9 hp

b. No correct answer given

c. 20.3 hp

d. 75.0 hp

e. 60.3 hp

The angle of incline of the hill above the horizontal is 8.81°.

Since the hill has a 15.5% grade is one that rises 15.5 m vertically for every 100.0 m of distance in the horizontal direction.

The tangent of the angle of the incline of the hill, Ф is

tanФ = vertical rise/horizontal distance = grade of hill

Now, the vertical rise = 15.5 m and the horizontal distance = 100.0 m

So, substituting the values of the variables into the equation, we have

tanФ = vertical rise/horizontal run

tanФ = 15.5 m/100.0 m

tanФ = 0.155

Taking inverse tan of both sides, we have

Ф = tan⁻¹(0.155)

Ф = 8.81°

So, the angle of incline of the hill above the horizontal is 8.81°.

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Answer:

c

Explanation:

speed=distance÷time

40÷10=4

The final velocity of the rock before hitting the ground is 34.42m/s

Velocity of an object can be said as, the rate of change of displacement with respect to time of an object . Its unit is m/s and it is a vector quantity.

V = Δx/Δt

In here , V is velocity ,  Δx is change in displacement and Δt is change in time of an object.

We are given that,

The rock thrown downward with initial velocity = (-u) = -20m/s

The height of the building before and after hitting the ground = -Δy = -40 m

Therefore , to get the value of the final velocity (v) of the rock before hitting the ground , then the equation of motion cab be written as,

v² = u² + 2a(Δy )

Here , (a) is the acceleration due to gravity and taken negative (-9.81m/s²) due downward direction of the building then putting all the values in above equation of motion ,

v² = (-20m/s)² + 2(-9.81m/s²) (-40m)

v² = 1184.42m/s

v = 34.42m/s

Hence, the final velocity of the rock before hitting the ground would be 34.42m/s .

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"The Brave Little Toaster" is an animated movie featuring five household appliances on a journey to find their owner, highlighting the power and importance of electromagnetics as they use electricity and electromagnetic fields to function and communicate with each other.

Electromagnetics is the study of the behavior and interaction of electric and magnetic fields. It includes the study of electromagnetic waves, which are waves of energy that are created by the oscillation of electric and magnetic fields. Electromagnetic waves can travel through empty space and are responsible for many phenomena, such as light, radio waves, microwaves, X-rays, and gamma rays. Electromagnetics is an important field of study in physics and engineering, with applications in many areas, including telecommunications, electronics, medical imaging, and energy production.

"The Brave Little Toaster" is an animated movie that features five household appliances on a journey to find their owner. The appliances include a toaster, a vacuum cleaner, a lamp, a radio, and an electric blanket. Throughout their adventure, they face various challenges and dangers, including a terrifying junkyard and a crushing machine. The movie highlights the power and importance of electromagnetics, as the appliances use electricity and electromagnetic fields to function and communicate with each other.

Therefore, Five household gadgets travel to locate their owner in the animated film "The Brave Little Toaster," which emphasises the relevance and power of electromagnetics because the equipment depend on electricity and electromagnetic fields to function.

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Answer:

The body systems that work together to maintain the energy Sierra needs are;

The digestive system, the respiratory system, and the circulatory system

Explanation:

Cellular respiration in the body cells require oxygen to produce energy which are used by the muscles and other body cells. Carbon dioxide is also produced and is the build up of carbon dioxide has to be removed from the body as the by product of cellular respiration which is toxic at the cell level

Therefore, the body systems that work together to maintain the energy Sierra needs are;

The digestive system; Takes in the energy containing food and brakes them into chemicals that are transported to the cells for cellular respiration

The respiratory system; Takes in oxygen and removes carbon dioxide from the blood from and to the atmosphere

The circulatory system; Supplies food and oxygen from the digestive and respiratory system to the cells and transports produced carbon dioxide from the cells to the lungs from where it is passed out of the body by th respiratory system.

Answer:

A. 2.58m

Explanation:

Using the formula;

F = GMm/r²

M and  m are the masses

G is the gravitational constant

r is the distance between the masses

Substitute

0.00006 = 6.67*10^-11(2000)(3000)/r²

0.00006r² = 6.67*10^-11*6000000

0.00006r² = 40.02*10^-5

0.00006r² = 0.0004

r² =  0.0004/0.00006

r² = 6.66

r = 2.58m

Hence the distance between them is 2.58m

The heat output per cycle of the engine of efficiency 0.52 that performs a useful work of 780 J is 1500 J.

Heat Output means the total useful heat energy recovered from the combustion turbine as heat.

To calculate the heat output of the engine, we use the Carnot law formula.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1 and solve for Q'

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Answer:

The machines included in a remote controlled drone helicopter are:

A point source of light illuminating an aperture is 2 mm away. A 13 cm wide bright patch of light appears on a screen 2 mm behind the aperture. The width of the aperture is 6.5 cm.

The formula for determining the width of the aperture is given by

D = f/N

where, D is diameter

f is focal length

N is f-number or wideness

DN = f

N = f/D

Given that, f = 13 cm = 130 mm

D = 2 mm

N = 130/2 = 65 mm = 6.5 cm

Thus, the width of the aperture is 6.5 cm.

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Answer:

It is often necessary to convert from one unit to another. For example, if you are reading a European cookbook, some quantities may be expressed in units of liters and you need to convert them to cups. Or perhaps you are reading walking directions from one location to another and you are interested in how many miles you will be walking. In this case, you may need to convert units of feet or meters to miles.

Explanation:

Because of research

Answer:

energy:

-the strength and vitality required for sustained physical or mental activity.

-power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

Explanation:

Answer:

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

Explanation:

The total amount of time the ball would be in the air is 2.04 secs

To determine how long the ball will be in the air,

We will the equation for calculating total time of flight, T

For a projectile motion, the total time of flight of an object is given by

\(T = \frac{2usin\theta}{g}\)

Where T is the total time of flight

u is the velocity of projection

θ is the angle of projection

and g is the acceleration due to gravity

From the question,

u = 10.0 m/s

θ = 90° (This is because the ball is kicked straight up)

Put these values into the equation,

\(T = \frac{2usin\theta}{g}\)

\(T = \frac{2\times 10.0 \ sin90}{9.8}\)

(NOTE: g = 9.8 m/s²)

∴ \(T = \frac{2\times 10.0 \times 1}{9.8}\)

\(T = \frac{20}{9.8}\)

T = 2.04 secs

Hence, the total amount of time the ball would be in the air is 2.04 secs

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Answer:

216 J

Explanation:

h = 1.8

a = 9.8

m = 12.2

GPE = HAM = 216

The gravitational potential energy of a suitcase weighing 120 N sits on a counter 1.8 m high in the airport is 216 Joules.

Gravitational potential energy is the energy which is present inside the body of an object which is at rest. This energy is transformed into kinetic energy as soon as the object changes its state of rest to motion.

The gravitational potential energy of an object can be calculated through the formula:

GPE = m × g × h

where, GPE = Gravitational Potential Energy,

m = mass of the object,

h = height covered by the object

w = m × g

where, w = weight of the object

So, the gravitational potential energy of the object is:

GPE = 120 × 1.8

GPE = 216 Joules

Therefore, the gravitational potential energy of the suitcase is 216 Joules.

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Answer:

64 ohms =R

Explanation:

R is directly proportional to V

R is inversely proportional to I(Current

Answer:

Gravity

Explanation:

Newton contributions

Object having shorter wavelength or higher frequency gives off the greatest intensity of blue light because it strongly scattered the light.

Light is the electromagnetic radiation having wavelengths between 380 and 750 nm that makes visible to human eyes. Electromagnetic radiation are  radio, microwave, infrared, visible light, ultraviolet, X-rays and gamma rays in the terms of wavelengths. The Sun is the main source of the light.

Light travels in a straight line whose speed is faster than the speed of sound. The speed of light is 3 x \(10^8\) m/s.

Light energy is of various types. They are:

1. Visible light

2. Infrared light

3. X-rays and Ultraviolet light

Characteristics of light are as follows:

1. Direction

2. Intensity

3. Color

4. Contrast

5. Hardness

Thus, object having shorter wavelength or higher frequency gives off the greatest intensity of blue light because it strongly scattered the light.

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a

sorry if its not right

1. If [A] is halved and [B] is tripled, the rate of the reaction will be:

rate = k([A]/2)([B]^2*3) = k([A][B]^2)*(3/2) = (3/2) * (0.0770 M/s) = 0.1155 M/s

Therefore, the initial rate will be 0.1155 M/s.
If [A] is tripled and [B] is halved, the rate of the reaction will be:
rate = k([A]*3)([B]^2/2) = k([A][B]^2)*(3/2) = (3/2) * (0.0770 M/s) = 0.1155 M/s

Therefore, the initial rate will also be 0.1155 M/s.
1. If [A] is halved and [B] is tripled, the new initial rate will be:
New rate = k[(1/2)[A]][(3)[B]]^2
New rate = k[(1/2)[A]][9][B]^2
New rate = 9/2 * k[A][B]^2

Since the initial rate is 0.0770 M/s, the new rate will be:
New rate = (9/2) * 0.0770 = 0.3465 M/s
If [A] is tripled and [B] is halved, the new initial rate will be:

New rate = k[(3)[A]][(1/2)[B]]^2
New rate = k[(3)[A]][(1/4)][B]^2
New rate = 3/4 * k[A][B]^2

Since the initial rate is 0.0770 M/s, the new rate will be:
New rate = (3/4) * 0.0770 = 0.0578 M/s

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Answer:

C: Valence electrons are transferred from a metal to a nonmetal

Explanation:

In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.

hope this was helpful :)

Answer:

B Is not a problem

But A is

Explanation:

its either he is long sighted

so he is able to read from far and not near so it's better he sees a doctor to get recommend glasses